Control of Uncertain LTI Systems Based on an Uncertainty and Disturbance Estimator

Qing‐Chang Zhong1, D. Rees1
1School of Electronics, University of Glamorgan, Pontypridd, CF37 1DL, United Kingdom

Tóm tắt

This paper proposes a robust control strategy for uncertain LTI systems. The strategy is based on an uncertainty and disturbance estimator (UDE). It brings similar performance as the time-delay control (TDC). The advantages over TDC are: (i) no delay is introduced into the system; (ii) there are no oscillations in the control signal; and (iii) there is no need of measuring the derivatives of the state vector. The robust stability of LTI-SISO systems is analyzed, and simulations are given to show the effectiveness of the UDE-based control with a comparison made with TDC.

Từ khóa


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