scholarly journals Visualizing Non-Linear Control System Performance by Means of Multidimensional Scaling

2013 ◽  
Vol 8 (4) ◽  
Author(s):  
J. A. Tenreiro Machado
Keyword(s):  
Control System ◽  
Multidimensional Scaling ◽  
Performance Measures ◽  
System Performance ◽  
Numerical Experiments ◽  
Closed Loop ◽  
Time Response ◽  
Linear Control ◽  
Performance Indices ◽  
Controller Performance

This paper addresses the use of multidimensional scaling in the evaluation of controller performance. Several nonlinear systems are analyzed based on the closed loop time response under the action of a reference step input signal. Three alternative performance indices, based on the time response, Fourier analysis, and mutual information, are tested. The numerical experiments demonstrate the feasibility of the proposed methodology and motivate its extension for other performance measures and new classes of nonlinearities.

scholarly journals Visualizing Non-Linear Control System Performance by Means of Multidimensional Scaling

2011 ◽  
Author(s):  
J. A. Tenreiro Machado
Keyword(s):  
Control System ◽  
Multidimensional Scaling ◽  
System Performance ◽  
Numerical Experiments ◽  
Closed Loop ◽  
Linear Control ◽  
Performance Indices ◽  
Frequency Domains ◽  
Non Linear ◽  
Non Linear Systems

This paper addresses the use of multidimensional scaling in the evaluation of control system performance. Both linear and non-linear systems are analysed based on the closed loop time response under the action of a reference step input signal. Two alternative performance indices, based on the time and frequency domains, are tested. The numerical experiments demonstrate the feasibility of the proposed methodology and motivate its extension for other performance measures and a broader classes of non-linearities.

Visualizing Fractional Control System Approximations by Means of Multidimensional Scaling

2011 ◽  
Author(s):  
J. A. Tenreiro Machado
Keyword(s):  
Control System ◽  
Multidimensional Scaling ◽  
Input Signal ◽  
Numerical Experiments ◽  
Closed Loop ◽  
Performance Indices ◽  
Closed Loop System ◽  
Frequency Domains ◽  
Fractional System ◽  
Fractional Control

This paper addresses the use of multidimensional scaling in the evaluation of fractional system approximations. Algorithms are analysed based on the time response of the closed loop system under the action of a reference step input signal. Two alternative performance indices, based on the time and frequency domains, are tested. The numerical experiments demonstrate the feasibility of the proposed methodology.

Robust Η∞ Fault-Tolerant for a Class of Networked Control System Based on Static Output Feedback

2014 ◽  
Vol 912-914 ◽  
pp. 1375-1378
Author(s):  
Zi Ping Wang
Keyword(s):  
Control System ◽  
Output Feedback ◽  
System Performance ◽  
Closed Loop ◽  
Fault Tolerant ◽  
Lyapunov Stability Theory ◽  
Networked Control System ◽  
Networked Control ◽  
The Impact ◽  
Static Output

This paperfocuses on the networked control system (NCS) with sensor and actuatorfailures, considering the impact of the network delay and parameter uncertaintyon system performance, We propose a design of robust Η∞ fault-tolerant control based on static outputfeedback .The closed- loop networked control system possessing asymptoticallystable is given by staticoutput feedback, fault-tolerantcontrol theory and Lyapunov stability theory. Then the fault-tolerant controller is deduced by using linear matrixinequalities. Numerical simulation illustrates the method has a good robustfault tolerant capability that the conclusions are valid.

Computational Alternative to a Gain Setting Procedure of Brown and Campbell

1990 ◽  
Vol 112 (3) ◽  
pp. 516-517
Author(s):  
L. Kitis
Keyword(s):  
Control System ◽  
Frequency Response ◽  
Numerical Method ◽  
Multiple Solutions ◽  
Closed Loop ◽  
Linear Control ◽  
Function Evaluation ◽  
Resonant Frequencies ◽  
Positive Roots ◽  
Roots Of A Polynomial

A numerical method for setting the gain of a linear control system to obtain a specified peak closed-loop frequency response amplitude is presented. The essential computational step in the algorithm is the calculation of all positive roots of a polynomial. This step provides the set of all possible resonant frequencies. A gain constant for each of these frequencies is then found by a simple function evaluation. The possibility of multiple solutions is demonstrated by an example.

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