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  • Learning to control an inverted pendulum using neural networks

    Publication Year: 1989, Page(s):31 - 37
    Cited by:  Papers (280)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    An inverted pendulum is simulated as a control task with the goal of learning to balance the pendulum with no a priori knowledge of the dynamics. In contrast to other applications of neural networks to the inverted pendulum task, performance feedback is assumed to be unavailable on each step, appearing only as a failure signal when the pendulum falls or reaches the bounds of a horizontal track. To... View full abstract»

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  • Modeling of an internal combustion engine for control analysis

    Publication Year: 1988, Page(s):20 - 26
    Cited by:  Papers (69)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    Recent activity in nonthermodynamic modeling of automotive internal combustion engines with spark ignition, which are inherently nonlinear, is reviewed. A fundamental nonlinear model of the engine is presented, and a linear control-oriented model is derived from the nonlinear process. Techniques for experimental verification are examined, and a practical linear engine example incorporating multira... View full abstract»

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  • Application of generalized predictive control to industrial processes

    Publication Year: 1988, Page(s):49 - 55
    Cited by:  Papers (150)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    A novel algorithm called generalized predictive control (GPC) is shown to be particularly effective for the self-tuning control of industrial processes. The method uses long-range predictive control ideas with a carefully chosen controlled autoregressive and integrated moving average (CARMA) plant model and various horizons that allow for a rich variety of control objectives. The procedure can ada... View full abstract»

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  • A multilayered neural network controller

    Publication Year: 1988, Page(s):17 - 21
    Cited by:  Papers (604)  |  Patents (40)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB)

    A multilayered neural network processor is used to control a given plant. Several learning architectures are proposed for training the neural controller to provide the appropriate inputs to the plant so that a desired response is obtained. A modified error-back propagation algorithm, based on propagation of the output error through the plant, is introduced. The properties of the proposed architect... View full abstract»

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  • Neural networks for self-learning control systems

    Publication Year: 1990, Page(s):18 - 23
    Cited by:  Papers (494)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    It is shown that a neural network can learn of its own accord to control a nonlinear dynamic system. An emulator, a multilayered neural network, learns to identify the system's dynamic characteristics. The controller, another multilayered neural network, next learns to control the emulator. The self-trained controller is then used to control the actual dynamic system. The learning process continue... View full abstract»

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  • Parameter learning for performance adaptation

    Publication Year: 1990, Page(s):3 - 11
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (821 KB)

    A parameter learning method is introduced and used to broaden the region of operability of the adaptive control system of a flexible space antenna. The learning system guides the selection of control parameters in a process leading to optimal system performance. A grid search procedure is used to estimate an initial set of parameter values. The optimization search procedure uses a variation of the... View full abstract»

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  • Survey of model-based failure detection and isolation in complex plants

    Publication Year: 1988, Page(s):3 - 11
    Cited by:  Papers (538)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1090 KB)

    Techniques to detect and isolate failures in complex technological systems, such as sensor biases, actuator malfunctions, leaks, and equipment deterioration are surveyed. The methods are based on analytical redundancy afforded by a mathematical model of the system. The main components of such techniques are residual generation using the model, signature generation by statistical testing, and signa... View full abstract»

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  • A control theoretic model of driver steering behavior

    Publication Year: 1990, Page(s):3 - 8
    Cited by:  Papers (100)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Following well-established feedback control design principles, a control theoretic model of driver steering behavior is presented. While accounting for the inherent manual control limitations of the human, the compensation dynamics of the driver are chosen to produce a stable, robust, closed-loop driver-vehicle system with a bandwidth commensurate with the demands of the driving task being analyze... View full abstract»

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  • Nicholas Minorsky and the automatic steering of ships

    Publication Year: 1984, Page(s):10 - 15
    Cited by:  Papers (27)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (626 KB)

    First Page of the Article
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  • Model reference adaptive control of a direct-drive DC motor

    Publication Year: 1989, Page(s):80 - 84
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    An adaptive time-optimal position controller for a direct-drive DC motor with a design based on the model reference adaptive approach is presented. The high-acceleration torque of DC motors with permanent magnets permits direct coupling of the load to the motor axis, avoiding the use of a transmission with its inherent disadvantages (such as backlash and friction). However, direct coupling induces... View full abstract»

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  • Adaptive control of flexible-joint manipulators

    Publication Year: 1989, Page(s):9 - 13
    Cited by:  Papers (88)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (565 KB)

    Under the assumption of weak joint elasticity, a singular perturbation argument is used to show that recent adaptive control results for rigid robots can be used to control flexible-joint robots provided a simple correction term is added to the control law to damp out the elastic oscillations at the joints. In this way, fundamental properties of rigid robot dynamics can be exploited to design adap... View full abstract»

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  • Introduction to dynamic models for robot force control

    Publication Year: 1987, Page(s):48 - 52
    Cited by:  Papers (72)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (533 KB)

    Endpoint compliance strategies for precise robot control utilize feedback from a force sensor located near the tool/ workpiece interface. The closed-loop performance of such endpoint force control systems has been observed in the laboratory to be limited and unsatisfactory for industrial applications. This article discusses the particular dynamic properties of robot systems that can lead to instab... View full abstract»

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  • Feedforward and feedback control of a flexible robotic arm

    Publication Year: 1990, Page(s):9 - 15
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (633 KB)

    Feedforward and feedback control strategies are applied to a servo-driven flexible structure and studied by time-domain computer simulations. Simulation results are compared to the results of experimental runs on a flexible arm apparatus. The most accurate and stable responses of the arm are obtained by adding corrective terms to the command signals when position feedback is taken only from the se... View full abstract»

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  • Mobile robot control by a structured hierarchical neural network

    Publication Year: 1990, Page(s):69 - 76
    Cited by:  Papers (56)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (759 KB)

    A mobile robot whose behavior is controlled by a structured hierarchical neural network and its learning algorithm is presented. The robot has four wheels and moves about freely with two motors. Twelve sensors are used to monitor internal conditions and environmental changes. These sensor signals are presented to the input layer of the network, and the output is used as motor control signals. The ... View full abstract»

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  • History and development of dynamic programming

    Publication Year: 1984, Page(s):24 - 28
    Cited by:  Papers (24)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (609 KB)

    The development of DP (dynamic programming) is presented in a chronological order. Although it seems awkward, it does show that science never develops in a correct and straightforward fashion. It is only afterwards that a scientific development can be made logical and rational. The emphasis is placed on the actual development of DP and its interconnections with other basic areas, such as invariant... View full abstract»

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  • Back-propagation neural networks for nonlinear self-tuning adaptive control

    Publication Year: 1990, Page(s):44 - 48
    Cited by:  Papers (122)  |  Patents (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (479 KB)

    A back-propagation neural network is applied to a nonlinear self-tuning tracking problem. Traditional self-tuning adaptive control techniques can only deal with linear systems or some special nonlinear systems. The emerging back-propagation neural networks have the capability to learn arbitrary nonlinearity and show great potential for adaptive control applications. A scheme for combining back-pro... View full abstract»

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  • Use of a rule-based system for process control

    Publication Year: 1988, Page(s):3 - 13
    Cited by:  Papers (165)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1393 KB)

    A rule-based, digital, closed-loop controller that incorporates fuzzy logic has been designed and implemented for the control of power on the 5-MW Massachusetts Institute of Technology (MIT) Research Reactor under both steady-state and transient conditions. A comparison is made of the rule-based and analytic approaches. Differences in the division of labor between plant engineers and control speci... View full abstract»

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  • A linear dynamic model for flexible robotic manipulators

    Publication Year: 1987, Page(s):61 - 64
    Cited by:  Papers (88)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (397 KB)

    The design of lightweight links for robotic manipulators results in flexible links. Accurate control of lightweight manipulators during the large changes in configuration common to robotic tasks requires dynamic models that describe both the rigid-body motions, as well as the flexural vibrations. This paper describes a linear state-space model for a single-link flexible manipulator and compares si... View full abstract»

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  • Toward intelligent control

    Publication Year: 1989, Page(s):60 - 64
    Cited by:  Papers (39)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (770 KB)

    The problem of automatic tuning of simple regulators is examined. The key idea is to design an aid for the process operator, which should use minimal prior information about the system. This is a typical example of a case where it is essential to develop techniques that will give crude but robust estimates. The development has resulted in a novel generation of the classical PID (proportional, inte... View full abstract»

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  • Use of neural networks for sensor failure detection in a control system

    Publication Year: 1990, Page(s):49 - 55
    Cited by:  Papers (81)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    The use of the back-propagation neural network for sensor failure detection in process control systems is discussed. The back-propagation paradigm and traditional fault detection algorithms such as the finite integral squared-error method and the nearest-neighbor method are discussed. The algorithm is applied to the internal model control structure for a first-order linear time-invariant plant sub... View full abstract»

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  • Control strategies for tendon-driven manipulators

    Publication Year: 1990, Page(s):23 - 28
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (614 KB)

    Two antagonist control algorithms are presented. These algorithms are used to control manipulator links antagonistically driven by two actuators via tendons. They have been simulated and experimentally shown to produce better active and passive performance for an electric test system than control algorithms developed earlier. There are two fundamental differences between the control algorithms and... View full abstract»

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  • Discrete-time controller design for robust vehicle traction

    Publication Year: 1990, Page(s):107 - 113
    Cited by:  Papers (28)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    A discrete-time control algorithm for robust vehicle traction, which includes antiskid braking and antispin acceleration, is presented. The algorithm is a nonlinear feedback scheme that can be designed via classical digital control theory. The algorithm is easy to tune and modify to incorporate higher-order dynamics, which may be necessary for a practical hardware setup. The robust controller prov... View full abstract»

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  • Assessment of air-to-air missile guidance and control technology

    Publication Year: 1989, Page(s):27 - 34
    Cited by:  Papers (94)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1027 KB)

    Current air-to-air missile guidance and control technology is assessed. Areas explored include target state estimation, advanced guidance laws, and bank-to-turn autopilots. The assumptions, benefits, and limitations of recent applications of nonlinear filtering, adaptive filtering, modern control, adaptive control, dual control, differential game theory, and modern control design techniques to the... View full abstract»

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  • A simple adaptive Smith-predictor for controlling time-delay systems: A tutorial

    Publication Year: 1983, Page(s):16 - 22
    Cited by:  Papers (15)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    This heuristic paper presents several simple techniques for analyzing the stability of time-delay systems. It explains the Smith predictor control scheme for time-delay systems and shows how errors in modeling the plant parameters can cause instability. Then an adaptive controller is added to the Smith predictor system; this pedagogical example offers a complete derivation of a simple adaptive con... View full abstract»

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  • Hierarchical neural network model for voluntary movement with application to robotics

    Publication Year: 1988, Page(s):8 - 15
    Cited by:  Papers (253)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    In order to control voluntary movements, the central nervous system must solve the following three computational problems at different levels: determination of a desired trajectory in the visual coordinates; transformation of the trajectory from visual coordinates to body coordinates; and generation of motor commands. Based on physiological information and previous models, computational theories a... View full abstract»

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  • Digital control of a brushless DC motor

    Publication Year: 1987, Page(s):31 - 35
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    The design of a high-performance capstan servo using a brushless DC motor is investigated. The implementation of the digital control uses classical control techniques with actual performance specifications used to design the controller. Details of hardware and software design are presented. View full abstract»

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  • The adaptive suspension vehicle

    Publication Year: 1986, Page(s):7 - 12
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (646 KB)

    This paper provides a description of the Adaptive Suspension Vehicle. The vehicle uses a legged, rather than a wheeled or tracked, locomotion principle, and is intended to demonstrate the feasibility of systems of this type for transportation in very rough terrain conditions. The vehicle is presently under test, with installation and validation of software modules for different operational conditi... View full abstract»

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  • A ball balancing demonstration of optimal and disturbance-accomodating control

    Publication Year: 1987, Page(s):54 - 57
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    The modeling, analysis, and design of a ball-balancing control system are considered. An optimal linear regulator control system is constructed, and an optimal hybrid controller capable of absorbing external disturbance is implemented. The controller design is based on the theory of disturbance-accommodating control, optimal linear quadratic regulator control, and a digital delayed-data observer. ... View full abstract»

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  • Multivariable toolbox for use with MATLAB

    Publication Year: 1989, Page(s):59 - 65
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (701 KB)

    A toolbox for the frequency-domain analysis and design of multivariable feedback systems, to be used with the software products PC-MATLAB or PROMATLAB, is described. The principal model representations used by the toolbox are described. Its capabilities are illustrated by a worked design example that shows the use of a Nyquist array method. Other design techniques supported by the toolbox are revi... View full abstract»

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  • Neural networks for routing communication traffic

    Publication Year: 1988, Page(s):26 - 31
    Cited by:  Papers (115)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (711 KB)

    The use of neural network computational algorithms to determine optimal traffic routing for communication networks is introduced. The routing problem requires choosing multilink paths for node-to-node traffic to minimize loss, which is represented by expected delay or some other function of traffic. The minimization procedure is implemented using a modification of the neural network traveling-sale... View full abstract»

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  • Sun tracking by peak power positioning for photovoltaic concentrator arrays

    Publication Year: 1983, Page(s):2 - 8
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (701 KB)

    This paper details the design, development, and evaluation of a microcomputer-based solar tracking and control system (TACS) capable of maintaining the peak power position of a photovoltaic (PV) array by adjusting the load on the array for maximum efficiency and changing the position of the array relative to the sun. At large PV array system installations, inverters are used to convert the dc elec... View full abstract»

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  • Design of turning control for a tracked vehicle

    Publication Year: 1990, Page(s):122 - 125
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB)

    The design of a turning control system for an M113 tracked vehicle, which is modeled as a two-input/two-output system, is treated. Since the vehicle model is nonlinear, time varying, and implicit, it is replaced by a set of linear time-invariant models that are valid over certain operation regions. The two inputs to the vehicle are throttle and steering. The two measured output variables are the v... View full abstract»

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  • Automatic tuning of commercial PID controllers for single-loop and multiloop applications

    Publication Year: 1990, Page(s):34 - 42
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (977 KB)

    Certain continuous-time self-tuning algorithms are shown to be capable of generating tuning parameters for commercial proportional-integral-derivative (PID) controllers. They are also shown to be capable of generating a feedforward signal that decouples the disturbance from the interaction from adjacent loops in a multivariable situation. The approach is verified using a standard Atari personal co... View full abstract»

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  • A historical review of robust control

    Publication Year: 1987, Page(s):44 - 47
    Cited by:  Papers (50)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (486 KB)

    A historical review of recent results in robust control is presented. The robust control problem, i.e., the problem of designing accurate control systems in the presence of significant plant uncertainties, is classical. However, over the past 15 years, significant new theory has been developed for the solution of this problem, especially with respect to linear multivariable systems characterized i... View full abstract»

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  • Mechanism and control of a quadruped walking robot

    Publication Year: 1988, Page(s):14 - 19
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    The quadruped walking robot called TURTLE-1 is described. A novel link mechanism named ASTBALLEM is used to construct highly rigid and easily controllable legs. Each leg has two degrees of freedom and is driven by two DC servomotors. The motion of the legs is controlled by a microcomputer, and various gaits are generated so that the robot walks not only statically but also quasidynamically. When t... View full abstract»

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  • Introduction to the linear algebraic method for control system design

    Publication Year: 1987, Page(s):36 - 42
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (705 KB)

    This tutorial article discusses some basic issues in the design of control systems. The concepts of well posedness and total stability are introduced to deal with noise and disturbance problems. The implementable transfer function is developed and is shown to solve completely pole-and-zero assignment and model matching problems. Two feedback configurations are introduced to realize the implementab... View full abstract»

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  • Stability analysis of power systems by Lyapunov's direct method

    Publication Year: 1989, Page(s):23 - 27
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    The Lyapunov direct method is on the verge of being implemented for assessment of online dynamic security. The main bottleneck has been in the proper characterization of the stability boundary and defining the fault-dependent region of attraction locally around the controlling unstable equilibrium points. Now there is a better understanding of this issue, and hence, a number of algorithms have bee... View full abstract»

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  • Redefinition of the robot motion-control problem

    Publication Year: 1985, Page(s):18 - 25
    Cited by:  Papers (85)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (758 KB)

    The objective of this paper is a redefinition of the robot control problem, based on (1) realistic models for the industrial robot as a controlled plant, (2) end-effector trajectories consistent with manufacturing applications, and (3) the need for end-effector sensing to compensate for uncertainties inherent to most robotic manufacturing applications. Based on extensive analytical and experimenta... View full abstract»

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  • Adaptive control of a single-link flexible manipulator

    Publication Year: 1990, Page(s):29 - 33
    Cited by:  Papers (52)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (530 KB)

    A method for controlling single-link lightweight flexible manipulators is proposed. The objective is to control the tip position of the flexible manipulator in the presence of joint friction and changes in payload. Both linear and nonlinear frictions are overcome by using a very robust control scheme for flexible manipulators. The control scheme is based on two nested feedback loops: an inner loop... View full abstract»

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  • Two-axis Sawyer motor for motion systems

    Publication Year: 1987, Page(s):20 - 24
    Cited by:  Papers (37)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    For a number of years, two-axis Sawyer motors have been used as motive devices for flatbed plotters and wafer probers. These two applications are quite different in their requirements for motor dynamics, but both depend on the motor's high speed and good open-loop positioning capability, as well as on its almost unlimited life expectancy. The motors are now being applied to a variety of other moti... View full abstract»

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  • Application of H-infinity design to automotive fuel control

    Publication Year: 1990, Page(s):102 - 106
    Cited by:  Papers (13)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    An application of H-infinity robust design to a diesel fuel injection system is provided. The diesel control system must respond rapidly and accurately to the accelerator pedal even though the system encounters large parameter changes because of fluctuations in fuel velocity due to temperature variations. The resulting design is evaluated through computer simulation and laboratory experiments. The... View full abstract»

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  • Microprocessor-based robust control of a DC servo motor

    Publication Year: 1986, Page(s):30 - 36
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (515 KB)

    A multiloop feedback control system supplemented by a complementary controller is used to improve the drive performance of a DC servo motor and reduce sensitivity to parameter variations, nonlinear effects, and other disturbances. Experimental results based on 8086 microprocessor implementation are presented to illustrate improved response and reduced sensitivity. View full abstract»

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  • Space structure vibration modes: How many exist? Which ones are important?

    Publication Year: 1987, Page(s):22 - 28
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (669 KB)

    This paper attempts to shed some light on the two issues raised in the title: How many vibration modes does a real structure have? and Which of these modes are important? The author argues that the "absurd subspace" (all but the first billion modes) is not a strength of continuum modeling, but, in fact, a weakness. Partial differential equations are not real structures, only mathematical models. T... View full abstract»

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  • Control of electric power systems

    Publication Year: 1981, Page(s):4 - 16
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1031 KB)

    First Page of the Article
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  • An automatic redesign approach for restructurable control systems

    Publication Year: 1985, Page(s):16 - 22
    Cited by:  Papers (94)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (685 KB)

    This paper presents an approach to the automatic redesign of flight control systems for aircraft that have suffered one or more control element failures. The procedure is based on linear quadratic (LQ) design techniques, and produces a control system that maximizes a measure of feedback system performance subject to a bandwidth constraint. View full abstract»

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  • A real-time reflexive pilot for an autonomous land vehicle

    Publication Year: 1986, Page(s):14 - 23
    Cited by:  Papers (18)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    An automatic pilot has been built that can drive an autonomous land vehicle in real time. The purpose of the pilot is to generate vehicle control commands that will direct the vehicle from the starting point to the final destination without hitting unforeseen obstacles or leaving the vicinity of the planned path. The pilot uses a single microprocessor and sensor range measurement to generate vehic... View full abstract»

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  • Microcomputer speed control of stepper motor

    Publication Year: 1982, Page(s):17 - 20
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    This paper describes the application of a microcomputer as a programmed speed control for a stepper motor. The microcomputer is used as a variable frequency square wave generator, and a digital driving circuit is designed to transform the square wave into a useful sequential driving waveform. The digital driving circuit, speed control program, and computation of motor speed are explained in detail... View full abstract»

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  • Robust design of cascade control

    Publication Year: 1990, Page(s):21 - 25
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (558 KB)

    A design concept for cascade control that ensures enhanced robustness by minimizing the mutual influence among the cascaded loops is proposed. This is achieved by complete decoupling of the design and performance of two (or more) cascaded control loops. The decoupling applies not only to static aspects (windup and saturations) but also to possible degradation of dynamic performance. The practical ... View full abstract»

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  • Active vibration control of a simply supported beam using a spatially distributed actuator

    Publication Year: 1987, Page(s):25 - 30
    Cited by:  Papers (54)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (574 KB)

    The application of a spatially shaped distributed actuator for the vibration control of a simply supported beam is studied both analytically and experimentally. The actuator consists of a layer of polyvinylidene fluoride (PVF2) bonded to one face of the beam. A summary of the underlying theory is presented, with emphasis on how controllability requirements affect the choice of the film'... View full abstract»

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  • Multivariable internal model control for a full-scale industrial distillation column

    Publication Year: 1989, Page(s):91 - 96
    Cited by:  Papers (10)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (589 KB)

    A multivariable internal model control system was developed for a full-scale distillation column. The basis for the design of the control is a two-input/two-output matrix of linear transfer functions describing column dynamics. The control system is designed to perform dual composition control of the overhead and bottom products. Hardware constraints dictate multirate sampling of the product conce... View full abstract»

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Aims & Scope

This Magazine ceased publication in 1990. The current retitled publication is IEEE Control Systems.

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