Observer-based Direct Adaptive Fuzzy Control for SISO Nonlinear Systems with Unknown Control Direction
This paper presents observer-based direct adaptive fuzzy control for a class of uncertain single-input singleoutput( SISO) nonlinear systems with unknown control direction. With this scheme, the adaptive fuzzy controller is designed in the presence of only system output is available for measurement, and a robust controller is used to compensate for the lumped errors. A state observer is designed to estimate the unmeasured state, the parameter adaptive laws are designed by the fuzzy basis functions rather than its filtering. Moreover, it does not require a priori knowledge of the control direction. The proposed design scheme guarantees that all the signals in the resulting closed-loop systems are bounded and the tracking errors converge asymptotically to zero. A simulation example is used to demonstrate the effectiveness of the proposed scheme.
SISO nonlinear system Fuzzy adaptive control State observer Nussbaum gain
Wuxi Shi Hongquan wang Furong Li Xiangyu Wei
School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin,China, 300387
国际会议
长沙
英文
5145-5150
2014-05-31（万方平台首次上网日期，不代表论文的发表时间）