Frequency-domain tests for robust control designs

2001 ◽  
Author(s):  
M. M. Kogan
Keyword(s):  
Robust Control ◽  
Frequency Domain ◽  
Control Designs

Application of CRONE Control to a Sampled Time Varying System With Periodic Coefficients

2008 ◽  
Vol 130 (6) ◽  
Author(s):  
Jocelyn Sabatier ◽  
Aitor Garcia Iturricha ◽  
Mathieu Moze ◽  
Alain Oustaloup
Keyword(s):  
Robust Control ◽  
Frequency Domain ◽  
Discrete Time ◽  
Time Varying ◽  
Periodic Coefficients ◽  
Crone Control ◽  
Time Varying Systems

An application of CRONE robust control extended to discrete-time-varying systems with periodic coefficients is presented. The application is carried out in the frequency domain through the representation of considered systems using time varying z-transforms and time varying pseudofrequency responses.

scholarly journals Robust control system design in frequency domain

2013 ◽  
Vol 23 (1) ◽  
pp. 61-78 ◽  
Author(s):  
Vojtech Veselý ◽  
Jakub Osuský
Keyword(s):  
Robust Control ◽  
Frequency Domain ◽  
Controller Design ◽  
Mimo Systems ◽  
Additive Model ◽  
Water System ◽  
Design Procedure ◽  
Robust Control System ◽  
Small Gain ◽  
Tank Water

Abstract In this paper two robust control methods for hybrid system are presented. Both methods are usefull for SISO and MIMO systems. Controller design procedure is developed in frequency domain. Equivalent subsystem method is used for controller design in this paper. Stability condition of proposed methods bases on small gain theory and uses additive and inverse additive model type. Two tank water system is presented in the paper and serves as a numerical example to compare effectiveness of described methods

Simplifying Robust Control Designs of Parametric Uncertain Systems Using Dimensional Transformations

2005 ◽  
Author(s):  
Haftay Hailu ◽  
Sean Brennan
Keyword(s):  
Robust Control ◽  
Uncertain Systems ◽  
Transformation Method ◽  
Control Synthesis ◽  
Synthesis Methods ◽  
Equivalent Representation ◽  
Control Techniques ◽  
Single Controller ◽  
Robust Control Design ◽  
Control Designs

Robust control techniques have become more popular in the last decade because of their ability to construct a single controller suitable for a family of plants that are represented as a nominal plant with an uncertainty bounds. A typical challenge with robust control design is that, as the size of the uncertainty block gets bigger, the complexity of the control synthesis and resulting controller exponentially increases. Using a dimensional transformation method, this work shows that some robust control problems can be recast into an equivalent representation with a much smaller size of uncertainty block. This reduction potentially reduces the conservativeness and computational complexity of both H∞/μ – synthesis methods. This method is demonstrated using the 1990 ACC benchmark problem.

scholarly journals Robust Control Design for Perturbed Systems by Frequency Domain Approach

2007 ◽  
Vol 56 (5) ◽  
pp. 2893-2901 ◽  
Author(s):  
Bing-Fei Wu ◽  
Hung-I Chin ◽  
Jau-Woei Perng ◽  
Tsu-Tian Lee
Keyword(s):  
Robust Control ◽  
Frequency Domain ◽  
Control Design ◽  
Perturbed Systems ◽  
Robust Control Design ◽  
Frequency Domain Approach
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