Results 271 to 280 of about 899,236 (314)

Optimally sensitive and adaptive control systems

AIChE Journal, 1971
AbstractThe sensitivity of optimally controlled systems to parameter variations is examined in this paper. Two general approaches toward compensating for these variations are employed. The first, for open‐loop systems, involves augmenting the performance index with sensitivity terms and minimizing this combined index.
S. D. Weinrich, Leon Lapidus
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Sensitivity and dynamic accuracy of control systems

IFAC Proceedings Volumes, 1964
Publisher Summary This chapter describes sensitivity and dynamic accuracy of control systems. The problem of sensitivity of dynamic systems, and particularly of control systems, with respect to parameter changes occupies a very important place in modern engineering. The interest in this problem is twofold. On the one hand, in the physical realization
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Sensitivity Reduction in Aircraft Control Systems

IEEE Transactions on Aerospace and Electronic Systems, 1978
A method for reducing trajectory sensitivity to parameter perturbations for linear feedback systems is described. Application of the method to the design of aircraft control systems, with special reference to a helicopter forward flight control system, is illustrated.
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An Automatic Sensitivity Time Control System

IEEE Transactions on Aerospace, 1964
A completely transistorized automatic sensitivity time control (ASTC) circuit was designed and developed to operate in conjunction with a side-looking airborne radar surveillance set. The ASTC technique is a closed loop system which automatically controls the radar receiver gain vs range function in accordance with the average signal return.
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Sensitivity of optimal control systems with bang-bang control†

International Journal of Control, 1973
The effects of small parameter variations on the performance index of optimal control systems with initial and final target manifolds, free end time, and bang-bang control are analyzed in this paper. A new approach to the sensitivity equation is presented.
JACOB ROOTENBERG, PATRICK COURTIN
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Sensitivity minimisation in computer control systems

Transactions of the Institute of Measurement and Control, 1990
The sensitivity of linear, shift invariant system models to parameter variations is discussed. Conditions minimising the sensitivity of the system model to these variations are derived, enabling stability margins to be maintained.
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Sensitivity of automatic control systems with variable structure

IFAC Proceedings Volumes, 1964
Publisher Summary This chapter discusses the sensitivity of automatic control systems with variable structure. It describes the task of synthesizing control systems for linear plants with variable parameters satisfying specified performance criteria. As one of the indices of dynamic properties of the system, the settling time is considered.
B.N. Petrov, S.V. Emelyanov, M.A. Bermant, V.I. Utkin   +3 more
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Sensitivity Analysis of Time Optimal Control Systems

IFAC Proceedings Volumes, 1984
Abstract Despite the tremendous work done in sensitivity analysis in recent years, few results have been become known in the field of the sensitivity of time optimal control systems. This paper is an attempt to derive general results for the sensitivity of time optimal single and multi-input control systems.
N. Beeker, P.M. Frank
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Sensitivities of large, multiple-loop control systems

IEEE Transactions on Automatic Control, 1965
This paper describes a method of analyzing large, multiple-loop control systems which can be represented by simultaneous, linear, first-order, differential equations. The eigenvalues of the system are found using the QR transform. Next, the sensitivities of these eigenvalues to the system's parameters are found from the normal and transposed ...
J. Van Ness, J. Boyle, F. Imad
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Low‐sensitivity controllers for discrete‐time systems

Journal of the Chinese Institute of Engineers, 1985
Abstract The problem of trajectory sensitivity considered in the literature was restricted to the continuous‐time systems. Some of the criteria provided in previous work (9, 10) are extended to the discrete‐time control systems. Two methods based on the Z‐domain design technique are developed to overcome the difficulty of obtaining the variations of ...
Ching‐Tien Liou, Tsing‐Yee Tu
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