基于模糊Takagi-Sugeno模型的发动机转速鲁棒控制

基于某航空用二冲程活塞式发动机的非线性模型,利用扇形非线性特性得到了发动机模糊Takagi-Sugeno(T-S)模型;基于该T-S模型,采用系统增广的方法研究了无静态误差转速控制器;设计中考虑了鲁棒H∞性能,使得该非线性系统的模糊控制器具有较好干扰抑制性能,并在Lyapunov稳定性理论基础上建立了该系统渐进稳定的线性矩阵不等式条件;最后通过系统仿真算例验证了所设计控制器的有效性.

Robust engine speed control based on Takagi-Sugeno fuzzy systems

The engine Takagi-Sugeno (T-S) models were obtained by sector nonlinearity, which was based on the nonlinear two-stroke internal combustion engine model. A nonlinear engine speed controller is researched, and the system augmented method was used for the design of control algorithm without steady-state error. By considering the robust H , a disturbance rejection controller design for the T-S fuzzy models was presented. The stability conditions were derived using Lyapunov approach, and the problems were formulated as linear matrix inequality (LMI) problems. Finally, simulation results attests to the properties of these methods.