Fault estimation filter design for discrete-time Takagi-Sugeno fuzzy systems

作者：Ding, Da-Wei^*; Du, Xin; Xie, Xiangpeng; Li, Mo

来源：IET Control Theory and Applications, 2016, 10(18): 2456-2465.

DOI：10.1049/iet-cta.2016.0318

• FINITE FREQUENCY-DOMAIN
• H-INFINITY CONTROL
• NONLINEAR-SYSTEMS
• STABILITY
• STABILIZATION
• OBSERVER

This study is concerned with the fault estimation problem of discrete-time Takagi-Sugeno fuzzy systems with low-frequency faults. A fault estimation filter is designed to solve this problem. To make the estimation error as small as possible in the presence of high-frequency disturbances, the filter is designed to satisfy two finite-frequency H-infinity performance indices simultaneously. An algorithm is proposed to calculate the parameters of the desired filter. The obtained filter can estimate the faults in low-frequency domain effectively, e.g. stuck faults. For comparison, a full-frequency fault estimation method is also given. An example is given to illustrate advantages of the proposed finite-frequency method.

• 出版日期2016-12-12
• 单位南京邮电大学; 北京科技大学; 上海大学