DocumentCode :
2976940
Title :
H robust control of high order system based on adaptive low order model with dead-time
Author :
Lu, Zhao-quan ; Ian, Jiang-hong ; Lu, Yang
Author_Institution :
Sch. of Electr. Eng. & Autom., Hefei Univ. of Technol., China
Volume :
3
fYear :
2002
fDate :
2002
Firstpage :
1349
Abstract :
High-order systems are commonly encountered in production processes. Due to the uncertainty and load disturbances, the performance of the systems which are designed with reduced approximated model are often not satisfactory. In this paper, a reduced-order model plus dead time is used to approximate high-order systems and to compensate the inertial lag. Based on the Popov hyperstability theorem, an adaptive mechanism is designed to minimize the broad sense predictive output error. Simulation results show that the adaptive reduced-order model has good ability to auto-approximate high-order systems and to compensate the inertial lag. Based on the adaptive dead-time compensation, an H robust controller is designed for high-order systems. Control simulation results prove that the H robust control system, which is described by the adaptive low-order model with dead time, has good robust stability and dynamical performance.
Keywords :
H control; Popov criterion; adaptive control; approximation theory; delay systems; multidimensional systems; reduced order systems; robust control; uncertain systems; H control; Popov hyperstability theorem; adaptive control; adaptive low order model; auto-approximation; dead time compensation; high-order systems; inertial lag; predictive output error; production processes; reduced-order model; robust control; stability; uncertain system; Adaptive control; Adaptive systems; Automation; Control systems; Poles and zeros; Predictive models; Production systems; Programmable control; Reduced order systems; Robust control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Machine Learning and Cybernetics, 2002. Proceedings. 2002 International Conference on
Print_ISBN :
0-7803-7508-4
Type :
conf
DOI :
10.1109/ICMLC.2002.1167425
Filename :
1167425
Link To Document :
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