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以LT50m模型为研究载体,针对一类多输入多输出非线性系统研究了一种带有干扰观测器的自适应模糊控制方案。考虑到实际系统中存在外界扰动不确定和数学模型不精确的情况,首先设计干扰观测器来估计系统的不可测状态;然后利用模糊系统的万能逼近性,设计一种具有监督控制能力的自适应模糊控制器;最后对其进行仿真分析。结果表明,该控制方案不仅能满足控制准确度的要求,而且对系统参数及非参数等方面的不确定性有很好的鲁棒性。
Taking the LT50m model as the research carrier, an adaptive fuzzy control scheme with disturbance observer is studied for a class of multiple-input and multiple-output nonlinear systems. Considering the uncertainty of the external disturbance and the inaccuracy of the mathematical model in the actual system, the disturbance observer is first designed to estimate the unmeasured state of the system. Then, by using the universal approximation of the fuzzy system, an adaptive control system with supervisory control is designed Fuzzy controller; Finally, the simulation analysis. The results show that this control scheme can not only meet the requirements of control accuracy, but also has good robustness to system parameters and non-parametric uncertainties.