摘要:

This paper proposes a block-tridiagonal state-space representation to establish alternative algebraic sufficient conditions for the absolute stability of multivariable non-linear systems. The systems considered are described by a transfer function matrix (given by a left matrix-fraction description) with multiple non-linear feedback elements satisfying the positive infinite sector condition. New matrix algorithms are presented in order to construct the block-tridiagonal representation of the system. The relationship of these absolute stability conditions to passivity properties is discussed.

ISSN:0020-7179    

DOI:10.1080/00207178608933490

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Stability of singularly perturbed systems with a periodic input is analysed by deriving the reduced system and using the relaxed method for analysing stability of the reduced system.

ISSN:0020-7179    

DOI:10.1080/00207178608933491

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

In this paper discrete-time bilinear systems are considered. Necessary and sufficient conditions are developed which ensure that for any constant input in an unbounded control domain, the trajectories of the system tend to the origin as time increases.

ISSN:0020-7179    

DOI:10.1080/00207178608933492

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

A combination of Zakian's design criteria for vague infinite-dimensional plants and the author's previous work, which specifies a recycle compensator for plants with recycle, is exploited to design a controller for a plant with recycle when the parameters of the process in the recycle path are subject to variations. The method gives a closed-loop system with guaranteed performance for large variations in process parameters.

ISSN:0020-7179    

DOI:10.1080/00207178608933493

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Circulatory autregulation is the phenomenon whereby an isolated organ can maintain a constant or almost-constant blood flow rate over a range of perfusion pressures. A mathematical model is developed, based on work reported in the physiological literature, and tuned to show that autoregulation can be accomplished by pressure-induced oscillations in arteriolar radius. Various features known lo be exhibited by skeletal muscle and by stretch receptors are incorporated in the model of smooth muscle surrounding the arterioles.

ISSN:0020-7179    

DOI:10.1080/00207178608933494

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

A systematic procedure is considered for the synthesis of a stabilizing control method for a multimachine power system with phase shifter, taking into account the velocity governor. A new approach is presented, which uses a coordinate-transformation technique and an optimization technique. The application of this method to a stabilizing control problem for a power system is illustrated by considering a 3-machine power system with phase-shifter control, taking into account an additional control vector for the governing system with one time constant. The synthesized controls are then used to improve the power-system transient stability to a remarkable degree and to restore the power-system transients rapidly to the stable-equilibrium point. Numerical results arc given.

ISSN:0020-7179    

DOI:10.1080/00207178608933495

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

In this paper, we consider the problem of robust-controller synthesis with plant and noise spectral uncertainties in LQG optimal systems. We frame an algorithm for synthesizing the robust controller to minimize the least favourable cost functional J via specifying the weighting matricesQandR. The Wiener-Hopf technique in the LQG optimal system, the saddle-point theory and a property of the contractive operator are employed to solve this problem.

ISSN:0020-7179    

DOI:10.1080/00207178608933496

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

The simultaneous assignment of eigenvalue and eigenvector in a dynamic system using a constant-gain state-feedback controller is formulated as a static optimization problem. Response shaping by adequately damping the dominant modes or by eliminating the uncontrollable modes is possible in this formulation. Systematic solution through a standard LP routine makes the method attractive for practical implementation. The proposed eigenstructure-assignment algorithm is illustrated through two examples, one of which is the stabilization of a single machine connected to an infinite-bus power system.

ISSN:0020-7179    

DOI:10.1080/00207178608933497

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Some additional comments are offered on the stability condition for linear discrete systems in Dabke (1983). It is pointed out that the condition can be naturally extended to cover time-varying systems.

ISSN:0020-7179    

DOI:10.1080/00207178608933498

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor