Design of output feedback controller for stochastic feedforward systems with unknown measurement sensitivity
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Published on: May 8, 2018
Hanfeng Li1, Xianfu Zhang1, Min Li2
1School of Control Science and Engineering, Shandong University, Jinan 250061, PR China.
Abstract:
This paper investigates the problem of output feedback control for a class of stochastic feedforward systems with unknown measurement sensitivity. Unknown measurement sensitivity is only a bounded continuous function and its derivative is not guaranteed. To solve the considered problem, the low-gain linear K-filters are performed without using the information of the output, and a gain design method based on backstepping is proposed to construct an output feedback controller. By the stochastic stability theory, the asymptotically stable in probability of the closed-loop control system is analyzed. A nonlinear liquid level control resonant circuit system with unknown measurement sensitivity is given to demonstrate the effectiveness of the proposed control scheme.
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