[1992] Proceedings of the IEEE International Symposium on Industrial Electronics

25-29 May 1992

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Displaying Results 1 - 25 of 209
  • An adaptive learning control scheme for manipulators

    Publication Year: 1992, Page(s):375 - 379 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (266 KB)

    The author presents a simple adaptive learning control scheme for multi-joint robotic manipulators based on the independent joint adaptive control and iterative learning control concepts. The control scheme consists of an adaptive law and a learning law. The adaptive law is designed by the Lyapunov method; less knowledge about the manipulator dynamics is required, and only the position and velocit... View full abstract»

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  • Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.92TH0371-5)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (52 KB)
    Freely Available from IEEE
  • Discussion on adaptive array signal processing

    Publication Year: 1992, Page(s):450 - 453 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (227 KB)

    In this paper, the authors study four kinds of adaptive arrays. The authors give four optimal weight vectors and one consistent signal to interference noise ratio (SINR) formula. On this basis, they discuss how to further improve the SINR by adaptive array optimal design. Finally, one example is presented to verify their conclusions.<> View full abstract»

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  • Development of an expert control system

    Publication Year: 1992, Page(s):308 - 310 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    Due to the advances of expert system research, the use of an expert system to acquire and represent the expertise (or knowledge) of experienced controller designers is becoming impossible. The purpose of this work is the development of an expert control system, ESCDS (expert system for controller design and supervision). The system is built on a shell tool PC-plus which runs on a personal computer... View full abstract»

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  • Neural networks adaptive control

    Publication Year: 1992, Page(s):117 - 120 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Neural networks have the function of self-learning and are adaptive. Control systems using neural networks provide improved performances than those using conventional methods. Based on the analysis and study of backpropagation neural networks, the authors propose a new method of adaptive control-neural networks adaptive control, and give some simulation results View full abstract»

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  • Computer network of precision measurement

    Publication Year: 1992, Page(s):772 - 775 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    This paper presents a detailed description about the formation, the principle of a computer network for precision measurement and new ideas of applying computer network theory to a mechanical precision measurement system. In this network, monolithic computer technology and computer network theory are applied in the field of precision measurement. By using this network, one IBM PC computer together... View full abstract»

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  • Sensorless force control of direct drive manipulator

    Publication Year: 1992, Page(s):311 - 315 vol.1
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The authors describe a method of a sensorless force control of direct-drive robot which has three-degrees-of-freedom. In the proposed method, a disturbance observer, which estimates the total sum of disturbance effects, is employed in each joint. First, the robust motion controller is realized by the feedback of the estimated disturbance torque. Secondly, the reaction force (reaction torque) is ca... View full abstract»

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  • Reseach on modelling of combustion process in diesel engines

    Publication Year: 1992, Page(s):518 - 522 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    This paper is concerned with the combustion process in diesel engines. A revised GMDH algorithm based on K-L transformation is presented in this paper, and this algorithm is applied to nonlinear modelling for the mean rate of main combustion period (MR). Compared with the basic GMDH algorithm, the result obtained by the revised GMDH algorithm has lower order, better precision, and calculating stab... View full abstract»

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  • Robust self tuning controller for electric furnace

    Publication Year: 1992, Page(s):121 - 125 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    In this paper, a continuous time self tuning controller is proposed for a electric furnace system which has large delay and unmodeled dynamics. The real time identification method in control algorithm is the continuous time exponentially weighted least squares method. The detuned model reference methods are adopted for the control algorithm. From simulation, one can conclude that the proposed algo... View full abstract»

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  • Microprocessor-based new PWM technique for unity power factor AC/DC converter

    Publication Year: 1992, Page(s):671 - 675 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    A new PWM method for a unity power factor AC/DC power converter is presented in this paper. The main circuit consists of an uncontrolled single phase rectifier bridge followed by a buck chopper. A 8098 single-chip microprocessor is employed in this control strategy. The hardware and software of the control system is introduced. The paper also gives experimental results View full abstract»

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  • Tuning of PI controllers based on gain and phase margin specifications

    Publication Year: 1992, Page(s):879 - 882 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    The authors examine a class of tuning formula associated with the relay auto-tuning, cross correlation auto-tuning and other self-tuning PI/PID controllers. These methods measure the ultimate gain, ultimate period, simplified process model parameters e.g. gain, time constant and dead-time or some related frequency response data e.g. a point on the Nyquist curve. The estimates are then used in the ... View full abstract»

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  • A new microprocessor based approach to an automatic control system for railway safety

    Publication Year: 1992, Page(s):842 - 843 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    A new microprocessor based automatic control system for railway safety is presented in this paper. The advanced control system is called the Automatic Train Safety System (ATSS). For many years, safety has been one of the most important problems in railway traffic organization. In the design of the ATSS, a fault-tolerant computing technique is applied in both hardware and software for the reliabil... View full abstract»

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  • Hierarchical classification system for diagnosis of semiconductor transistor

    Publication Year: 1992, Page(s):827 - 829 vol. 2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    Discusses the development of a diagnostic system that will address the critical troubleshooting problems. In the classification hierarchy full consideration must be given to knowledge abstraction, the set of solutions to which the interference structure has to map data, heuristic associations, and the problem solving architecture. Smalltalk was used as the classification reasoning tool, to illustr... View full abstract»

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  • Numerical simulation for two-dimensional quantum well AlGaAs/GaAs HEMT

    Publication Year: 1992, Page(s):817 - 818 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    An accurate model based on static state electron energy and momentum conservation equation model has been presented for heterostructure devices considering the quantum energy states in the 2DEG well. The energy and momentum relaxation time model in different valleys is introduced, and the computation is based on the Ferni-Dirac statistics. The numerical scheme for solving the four main equations s... View full abstract»

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  • Simulated VME system for adaptive control of a turbine generator

    Publication Year: 1992, Page(s):191 - 194 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    In this paper, the concept of simulating adaptive control of a turbine generator is developed based on a VME system using an OS-9 real time operating system. The ability to test and simulate a number of different control strategies for power system stability, by careful control of the excitation and governor systems, is developed. The VME system is a standard Eurocard rack based system using the V... View full abstract»

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  • A three-phase four-line soft switched inverter for UPS applications

    Publication Year: 1992, Page(s):696 - 700 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    As the heart of UPS systems, the inverter is required to cope with stringent voltage regulation and distortion constraints in the presence of unbalanced and nonlinear loads. This paper presents a four-leg soft switched inverter topology to provide a four-line output including the neutral point. The adoption of a resonant DC link inverter (RDCLI) technique, which makes the four-line output possible... View full abstract»

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  • Coordinate-parametric control of time optimal manipulation robots

    Publication Year: 1992, Page(s):316 - 319 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The problem of synthesizing time-optimal automatic control system (ACS) dealing with the executing mechanism of a robot body in the form of the second order linear object is considered taking into account the measurement inaccuracy of real position transducer. The purpose of synthesis is to make the level of the ACS positioning error, caused by this inaccuracy, less and introduce some additional p... View full abstract»

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  • A hierarchical expert system for voltage/VAr control of electric power systems

    Publication Year: 1992, Page(s):285 - 289 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A new type of expert system with a hierarchical structure for voltage and VAr control in electric power systems is proposed. With a high level expert coordinator, this expert system integrates a rule-based subsystem with a linear programming software package. The rule-based subsystem yields the control strategy by using a new heuristic one dimensional search algorithm in a discrete state space. Th... View full abstract»

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  • Constrained predictive control using neural network

    Publication Year: 1992, Page(s):261 - 266 vol.1
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Efficient control algorithms are important for industrial processes with constraints. The presence of constraints often results in nonlinear optimization problems which are difficult to solve online. A constrained neural predictive controller is presented, in which the internal dynamics of the neural network will drive the states of neurons to their steady states just corresponding to the constrai... View full abstract»

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  • Prediction and compensation of errors of inertial navigation systems

    Publication Year: 1992, Page(s):151 - 157 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    An original approach is proposed to the solution of prediction problems, the main peculiarity of which is in the creation of the relatively compact algorithms of long term prediction, based on the combination of the system state variables or the laws of their application, which remain constant at the prediction interval. The suggested prediction procedure is not based on the complication of the in... View full abstract»

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  • Modelling of the power supply with change of external characteristics

    Publication Year: 1992, Page(s):514 - 517 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    This report describes modelling results of power supplies with a change of external characteristics. A scheme of the lowering pulse-width modulator (PWM) was selected as a power supply. The external characteristic of this power supply has diverse bias regions with variable slope. Change of external characteristics is carried out with the help of a regulator. If regulator parameters are not optimal... View full abstract»

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  • Mathematical model-building and two-stage microcomputer adaptive control for phthalic anhydride production process

    Publication Year: 1992, Page(s):126 - 130 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    A two-order model for a phthalic anhydride production process with time delay has been proposed with a synthetic method of mechanism analysis and system identification, and a self-tuner with a feedforward PID structure has been designed. A two-stage microcomputer control system structure is proposed as a simple distributed computer control system. The software in the higher level computer, used fo... View full abstract»

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  • The constant rotation difference variable frequency speed regulation system with intermittent control

    Publication Year: 1992, Page(s):668 - 670 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    The intermittent control method is applied in this constant rotation difference variable frequency speed regulation system for electric motors. The principle is described. The motor's operating states are classified into two cases: constant current, and constant speed View full abstract»

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  • A formalistic method for the performance evaluation of communication networks of distributed computing systems

    Publication Year: 1992, Page(s):874 - 878 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    The authors describe a method for the performance evaluation of communication networks of distributed systems. This method consists of: logical transition from the network architecture under consideration to an associated Petri net based model and adaptation to a generalized stochastic Petri net (GSPN); automatic generation of the state transition rate diagram of a Markov Chain (MC) from the reach... View full abstract»

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  • A robust controller for uncertain systems

    Publication Year: 1992, Page(s):102 - 106 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    The design problem for a precise control system with uncertainty such as parameter variations, nonlinearity and disturbances is investigated in this paper. Treating uncertainties as equivalent disturbances and using the zeroing element concept for the zeroing of equivalent disturbances, a method of designing a robust controller is presented. The new method is composed of two steps. First, a modern... View full abstract»

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