基于T-S模糊模型的鲁棒故障诊断

针对T-S模糊模型描述的具有外部干扰的非线性不确定系统,构造了相应的测量冗余方程和模糊奇偶方程,给出并证明了对特定传感器和执行器故障敏感的最优奇偶向量的存在条件和求解定理,采用奇偶方程故障检测与诊断方法,研究了非线性不确定系统的鲁棒故障检测和诊断.最后,通过仿真示例说明了所提出的方法是有效的.

Robust Fault Diagnosis Using Parity Equation on Nonlinear Systems with Uncertain Parts Modeled on T-S Fuzzy Model

Aiming at a class of nonlinear systems with uncertain parts and exterior disturbances described by T-S Fuzzy Models,measuring residual and parity equations were firstly constructed,then robust fault detection and diagnosis on the systems were discussed,and the existing condition and research method of optimal parity vector which was sensitive to special sensor or controller faults were discussed.Parity equation to detect and diagnose robust fault had been used in a simulation example of non-line uncertain system,and finally,the simulation example shows the approach proposed is effective.