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Robust controller design of multivariable perturbed systems with QFT

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2 Author(s)
Yeong-Hwa Chang ; Dept. of Electr. Eng., Chung Cheng Inst. of Technol., Taoyuan, Taiwan ; Jin-Chuan Chang

We present a robust controller design method for perturbed MIMO systems by combining pseudo-diagonalization technique and the quantitative feedback theory (QFT). The pseudo-diagonalization method can be used to synthesize a pre-compensator with pre-assigned form, such as PI, PID type controllers, to achieve maximal degree of diagonal dominance. Once the dominance is reached, the well-known SISO QFT technique is then employed to design a robust diagonal controller for the compensated plant such that the required robust stability and tracking performance are satisfied. A numerical example is given to illustrate the feasibility of the method presented for designing a robust controller for perturbed MIMO systems

Published in:

American Control Conference, 1999. Proceedings of the 1999  (Volume:2 )

Date of Conference:

2-4 Jun 1999

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