[1992] Proceedings of the 31st IEEE Conference on Decision and Control

1992

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Displaying Results 1 - 25 of 863
  • Extensions of mixed- mu bounds to monotonic and odd monotonic nonlinearities using absolute stability theory. II

    Publication Year: 1992, Page(s):2820 - 2823
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  • H/sub infinity /-optimal estimation: a tutorial

    Publication Year: 1992, Page(s):2278 - 2286 vol.2
    Cited by:  Papers (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (846 KB)

    The different aspects of H/sub infinity / estimation of linear, time-varying processes are considered, in both the continuous- and the discrete-time cases. The connection with differential games is explained and the uniqueness and robustness issues are discussed. Four illustrative examples are given that demonstrate the various estimation schemes and compare the H/sub infinity / results with the c... View full abstract»

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  • A tutorial on chaos in control theory

    Publication Year: 1992, Page(s):2102 - 2106 vol.2
    Cited by:  Papers (4)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (377 KB)

    The author gives an overview of some applications of chaos theory that have been applied in control theory or areas related to control theory. Chaos and chaotic attractors are discussed. Other areas considered are the reconstruction of dynamics; the stability and stabilizability of control systems; control of chaos; and chaos in digital feedback systems.<> View full abstract»

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  • Signal estimation with a noisy saturating sensor

    Publication Year: 1992, Page(s):1234 - 1235 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    Summary form only given. Many biological and man-made sensors saturate outside a relatively narrow range of input signal values. Although such sensors are clearly nonlinear, they often exhibit nearly linear response within their range of high sensitivity. The problem considered in this work is estimating a signal using noisy measurements from such a sensor. The sensor considered has a high-gain (o... View full abstract»

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  • On low-noise modeling: a summary

    Publication Year: 1992
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    Summary form only given. It has been affirmed that the observability indices of the pair H,F and the corresponding linear dependences of the rows of the observability matrix provide a parametrization of all solutions of the exact (noiseless) linear modeling problem. Additional constraints such as complexity or stability can also be taken care of in this framework. In the present work, an attempt i... View full abstract»

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  • Proceedings of 1992 31st IEEE Conference on Decision and Control

    Publication Year: 1992
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    Freely Available from IEEE
  • Nonlinear regulation in halo orbits control design

    Publication Year: 1992, Page(s):536 - 541 vol.1
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    The design and simulation of feedback control laws for tracking prescribed quasi-halo orbits around the translunar libration point L 2 in the Earth-Moon system are considered. The nonlinear regulation approach is used to design control laws for asymptotically tracking those trajectories. The eccentricity of the system is considered and modeled by a periodic disturbance. Simulat... View full abstract»

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  • Satellite autonomous navigation and orbit determination using magnetometers

    Publication Year: 1992, Page(s):542 - 548 vol.1
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (651 KB)

    A near-earth (less than 1000 km altitude) satellite autonomous navigation and orbit determination method that uses measurements of the Earth's magnetic field is presented. An orbit state vector composed of six Keplerian elements enables the estimation of the instantaneous orbital elements by a relatively simple extended Kalman filter algorithm. The satellite position and velocity are computed as f... View full abstract»

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  • Modeling scheme for vehicle longitudinal control

    Publication Year: 1992, Page(s):549 - 554 vol.1
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (545 KB)

    A modeling scheme for vehicle longitudinal control based on system input/output data is developed. A family of linear fractional transformation (LFT) models is used to describe vehicle dynamics. Each of the LFT models is valid over a given dynamic range around its operating point. With these LFT models available, robust controllers can be designed using available tools. Strategies and algorithms f... View full abstract»

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  • Orbital plane change maneuver with aerobraking for Mars mission

    Publication Year: 1992, Page(s):555 - 556 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    Investigations on generating control schemes for atmospheric aerobraking for a Mars mission are presented. The complete mission consists of a deorbit phase, an atmospheric phase, and a reorbit phase. The atmospheric maneuver is composed of an entry mode, a cruise mode, and an exit mode. During the cruise mode, constant altitude and velocity are maintained by means of bank angle control with consta... View full abstract»

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  • Robust learning control for constrained robots

    Publication Year: 1992, Page(s):608 - 613 vol.1
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (514 KB)

    A learning control algorithm is developed for constrained motion control and force control for robot systems. The proposed controller is able to improve its performance in terms of both motion and force tracking errors in the presence of state disturbances, output measurement noises and errors in initial conditions as the operation is repeated. It is shown that the motion and force trajectories co... View full abstract»

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  • Investigation of robust model-following using a two-layered compensation scheme

    Publication Year: 1992, Page(s):557 - 559 vol.1
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    A two-layered compensation scheme is developed to enhance the performance of a flight control system (FCS). The traditional explicit model-following controller designed via linear quadratic optimization is the first layer of compensation providing basic stabilization for the aircraft, while the direct adaptive controller is cascaded in the output channel or actuating path (instead of state element... View full abstract»

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  • Nonlinear kinematic control for a robotic system with high redundancy

    Publication Year: 1992, Page(s):614 - 619 vol.1
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (586 KB)

    A nonlinear kinematic control developed for a nine-joint robotic manipulator designed for car-interior assembly applications is described. The three degrees of redundancy are fully utilized to achieve three independent performance criteria: avoidance of rotational singularity, even distribution of joint static torques, and translational singularity avoidance. A complete state-feedback kinematic co... View full abstract»

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  • Optimal message flow on ring networks with spatial reuse

    Publication Year: 1992, Page(s):2360 - 2363 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (517 KB)

    The problem of message exchange in ring structured communication networks is considered, where the network architecture allows connections between several nodes to be concurrently established, as long as their communication paths do not overlap on the ring. That is, spatial reuse of the ring is exercised, in the sense that disjoint segments of the ring can be used concurrently. Temporally and spat... View full abstract»

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  • Robust control design for an aircraft gust attenuation problem

    Publication Year: 1992, Page(s):560 - 561 vol.1
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    A method that leads to a minimal-order controller that guarantees robust disturbance rejection for uncertain systems via the solution of simple design equations was presented by H.H. Yeh et al. (1992). In the present work, the authors demonstrate the application of this method to an aircraft gust attenuation problem. The design algorithm presented here was successfully applied to synthesize a mini... View full abstract»

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  • Optimal kinematic control of constrained and redundant manipulators

    Publication Year: 1992, Page(s):620 - 625 vol.1
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (550 KB)

    The inverse kinematics of over-constrained and redundant robot manipulators is considered. In each case, an optimization problem is formulated to obtain the optimal inverse kinematic solution for the manipulator. The necessary and sufficient conditions for the existence and uniqueness of the solutions are also derived. A series of recursive control algorithms, which utilize joint position feedback... View full abstract»

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  • Reduced order LQG controllers for linear time varying plants

    Publication Year: 1992, Page(s):1085 - 1090 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The problem of reduced-order LQG (linear quadratic Gaussian) optimization is addressed in a finite-horizon, linear time-varying system setting. First-order necessary conditions for local optimality in the parameter space are provided in terms of four coupled matrix differential equations. This result provides a transparent generalization of the optimal projection equations of Hyland and Bernstein ... View full abstract»

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  • On the existence of Petri net supervisors

    Publication Year: 1992, Page(s):3380 - 3385 vol.4
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (610 KB)

    The use of Petri net languages in supervisory control theory is discussed. It is shown that the trimming of an unbounded Petri net is not always possible. A class of Petri net languages, which may be generated by nonblocking generators, is defined. Necessary and sufficient conditions for the existence of a Petri net supervisor, under the hypothesis that the system's behavior and the legal behavior... View full abstract»

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  • Discrete-time Bayesian adaptive control problems with complete observations

    Publication Year: 1992, Page(s):2748 - 2749 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (255 KB)

    A nonlinear Bayesian stochastic adaptive control problem with finite horizon, discrete-time, and complete observations is studied. An algorithm based on a suitable approximation is used to find ∈-optimal controls for the original problem. The results obtained from the application of the algorithm and a comparison with an exact solution are given View full abstract»

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  • On the duality between routing and scheduling systems with finite buffer space

    Publication Year: 1992, Page(s):2364 - 2365 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    A duality property is established between scheduling the routing problems associated with a set of parallel queues. This allows determination of the optimal policy for either system, once it is determined for its dual system. In systems with no buffer at the controller the critical requirement is that the scheduling policy is preemptive; when there is buffer space dedicated to the controller, the ... View full abstract»

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  • H-design of robust flight controllers to meet flying quality specifications

    Publication Year: 1992, Page(s):562 - 563 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (282 KB)

    The design of a longitudinal control sytem for a fighter aircraft using H∞-norm minimization is considered. The nonlinear aircraft model is linearized at various flight conditions. A linear controller is designed at each flight condition and these linear controllers are then scheduled. The outputs available for control are the pitch rate and the normal acceleration. The e... View full abstract»

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  • Bayesian adaptive control of time varying systems

    Publication Year: 1992, Page(s):705 - 709 vol.1
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB)

    Linear stochastic systems corrupted by Gaussian white noise disturbances are considered. An elementary proof of boundedness of the mean square response under a certainty equivalence minimum variance control law is described. The assumptions used in this ideal case indicate that the usual smallness in the mean conditions used in adaptive control could be overly restrictive. The methodology leads na... View full abstract»

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  • Space station attitude control using reaction control jets

    Publication Year: 1992, Page(s):632 - 638 vol.1
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (750 KB)

    The reaction control system (RCS) jets for the angular attitude control of Space Station Freedom (SSF) is discussed. After an overview of the RCS attitude control system the authors present an analysis of the pulsewidth modulation of the RCS controller. In addition, the limit cycle behavior is analyzed, and the control of SSF during reboost is described View full abstract»

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  • LQG design of discrete-time PI-observers

    Publication Year: 1992, Page(s):1091 - 1093 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Two versions of the discrete-time proportional integral (PI)-observer are introduced. The observers are given in a form which makes it possible to use standard LQG (linear quadratic Gaussian) design techniques. The PI-observers are applied in recovery design, where it is possible to obtain time recovery for t→∞. Loop transfer recovery design methods based on LQG are derived for... View full abstract»

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  • Adaptive control of a functional differential equation exhibiting some features of the vortex sheet in a plane shear layer

    Publication Year: 1992, Page(s):3386 - 3389 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB)

    The mixing of two fluids in a plane shear layer can be affected by time-dependent heating of one side of the flow partition. The authors describe the development of an adaptive linear-quadratic-Gaussian controller for a functional differential equation whose solutions display some of the characteristics of the motion of the Kelvin-Helmholtz layer separating the two streams. The delay differential ... View full abstract»

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