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基于前件变量未知的T-S模糊系统设计一类模糊观测器.将模糊系统转化为广义系统的形式,提出一种广义系统的观测器设计方法,消除了控制输入对观测误差方程的影响.针对测量端含有扰动的模糊系统,通过拉格朗目中值定理,将模糊观测器转化为一组线性矩阵不等式的求解问题,并将这种观测器的设计方法应用到熔化极气体保护焊系统,快速有效地实现了对弧长的观测.最后通过仿真分析验证了所提出的观测器设计方法的有效性.
A kind of fuzzy observer is designed based on TS fuzzy system with unknown antecedent variable. The fuzzy system is transformed into a form of generalized system, and a generalized system observer design method is proposed to eliminate the influence of control input on observational error equation. In this paper, the fuzzy observer is transformed into a set of linear matrix inequalities by Lagrange’s median value theorem, and the design method of this observer is applied to the molten metal gas shielded welding system. The fast Effectively realized the observation of arc length.Finally, the validity of the proposed observer design method is verified by simulation analysis.