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Output tracking control for discrete time-varying delay systems via virtual reference model based approach

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2 Author(s)
Teng-Shung Chiang ; Dept. of Electr. Eng., Ching-Yun Univ., Chungli, Taiwan ; Chian-Song Chiu

This paper proposes an output tracking control via virtual reference model for a class of discrete-time systems with time-varying delay and disturbances. In this proposed scheme, we combine a virtual reference model (VRM) and an observer-based fuzzy control strategy to develop output tracking controller. The Takagi-Sugeno fuzzy observer is used to estimate immeasurable state, while the controller is designed to guarantee the overall control system with H control performance. Sufficient conditions are derived in a linear matrix inequality form Lyapunov's stability method. Moreover, the VRM-based fuzzy synthesis is fully illustrated by an example of discrete-time stirred tank reactor system. The effectiveness of the proposed controller is finally demonstrated and shown from satisfactory numerical results.

Published in:

Fuzzy Systems (FUZZ), 2010 IEEE International Conference on

Date of Conference:

18-23 July 2010

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