We give explicit analytic formulas for computing the L2 norm of a discrete-time generalised system whose rational transfer matrix function may be improper or polynomial. The norm is expressed in terms of solutions of ...
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Fast increase of Earth population during the last decades raised a serious problem when it came to providing fresh and good quality food (mainly vegetables) in big quantity over a short period of time. Due to relative...
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Stiction in actuators is a common issue within the process industry, which may considerably degrade the control performance in practice. In particular, the improved prediction capabilities of model predictive control ...
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In this paper, we propose an adaptive fuzzy dynamic surface control(DSC) scheme for single-link flexible-joint robotic systems with input saturation. A smooth function is utilized with the mean-value theorem to deal w...
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In this paper, we propose an adaptive fuzzy dynamic surface control(DSC) scheme for single-link flexible-joint robotic systems with input saturation. A smooth function is utilized with the mean-value theorem to deal with the difficulties associated with input saturation. An adaptive DSC design with an auxiliary first-order filter is used to solve the "explosion of complexity"problem. It is proved that all the signals in the closed-loop system are semi-globally uniformly ultimately bounded, and the tracking error eventually converges to a small neighborhood around zero. The main advantage of the proposed method is that only one adaptation parameter needs to be updated,which reduces the computational burden significantly. Simulation results demonstrate the feasibility of the proposed scheme and the comparison results show that the improved DSC method can reduce the computational burden by almost two thirds in comparison with the standard DSC method.
In this paper the behavior control system developed for a humanoid soccer player is presented, according to the current rules established by the International RoboCup Federation. It is important to point out that this...
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This work shows the implementation of a laboratory - scale oxygen distribution plant built with the aim of being used as a benchmark for control and optimization of networked processes. The plant emulates the architec...
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This paper presents a practical approach for optimization by evolutionary computation of safety instrumented system design, based on safety and reliability measures, plus life cycle cost. The standard IEC 61508 establ...
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The second part of this paper describes a decentralized fuzzy controller structure for dealing with the multivariable control of human blood pressure. It consists of rule-based fuzzy controllers and a simple compensat...
The second part of this paper describes a decentralized fuzzy controller structure for dealing with the multivariable control of human blood pressure. It consists of rule-based fuzzy controllers and a simple compensator unit. The reasoning algorithms used by the fuzzy controllers are based on the unified approximate reasoning model derived by the authors in Part 1. The problem involves two cases: simultaneous control of the arterial pressure and systemic venous pressure, and simultaneous regulation of arterial pressure and cardiac output. Eight reasoning algorithms are chosen for comparisons which are based upon the control performance and the performance robustness. A number of simulation results show that the blood pressure can be controlled successfully by the proposed controller despite the presence of strong interactive effects between the variables. In addition, some useful conclusions about reasoning methods are drawn from the comparative studies.
A model predictive control scheme was proposed for discrete-time uncertain linear systems subject to input constraints. The cost functional to be minimised is a finite horizon quadratic cost, which describes the perfo...
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In this paper a pole-placement method for nonlinear systems is proposed. It is based on a recently introduced technique which approximates the solution of a nonlinear system by a sequence of linear time-varying system...
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