基于模糊Takagi-Sugeno模型的发动机转速鲁棒控制
Robust engine speed control based on Takagi-Sugeno fuzzy systems
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摘要: 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.
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关键词:
- 发动机 /
- 转速控制 /
- 非线性模型 /
- 模糊Takagi-Sugeno(T-S)模型 /
- 鲁棒H∞
Abstract: The engine Takagi-Sugeno(T-S) models were obtained by sector nonlinearity based on the nonlinear two-stroke internal combustion engine model.A nonlinear engine speed controller was 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 demonstrate the validity of these methods.-
Key words:
- engine /
- speed control /
- nonlinear model /
- Takagi-Sugeno(T-S) fuzzy models /
- robust H∞
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