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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2005, Vol. 6 Issue ( 7): 16-    DOI: 10.1631/jzus.2005.A0707
    
A new digital approach to design multivariable robust optimal control systems*
LIU Xiang, CHEN Lin, SUN You-xian
National Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, China
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Abstract  This paper presents a new design of robust optimal controller for multivariable system. The row characteristic functions of a linear multivariable system and dynamic decoupling of its equivalent system, were applied to change the transfer function matrix of a closed-loop system into a normal function matrix, so that robust H?T optimal stability is guaranteed. Furthermore, for the decoupled equivalent control system the l?T optimization approach is used to have the closed-loop system embody optimal time domain indexes. A successful application on a heater control system verified the excellence of the new control scheme.

Key words： Industrial Control Technology l∞/H∞      Dynamic decoupling      Normal matrix      Row characteristic function     
Received: 27 December 2004     
CLC:  TP13  
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LIU Xiang
CHEN Lin
SUN You-xian
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LIU Xiang, CHEN Lin, SUN You-xian. A new digital approach to design multivariable robust optimal control systems*. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2005, 6( 7): 16-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2005.A0707     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2005/V6/I 7/16

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