摘要
结合模糊逻辑和滑模理论,对带有大转动惯量负载的电液系统实现了高精度的控制。该控制器在系统状态到达滑模面时由模糊逻辑求出等效控制量,有效地削弱了抖振、抑制了外部干扰。为了在没有专家经验时,设计出性能良好的模糊控制器,采用遗传算法优化隶属函数和控制规则。在MATLAB中的仿真结果表明,所设计的控制器表现出良好的性能,满足了系统控制指标的要求。
Fuzzy logic and sliding mode theory are applied to control a nonlinear,complex electro-hydraulic system with large moment of inertia of load.Fuzzy logic is used to obtain equivalent control signal after system states reaching sliding manifold.As a result,chattering caused by switching action is effectively weakened,and external disturbance is restrained also.In order to design a good fuzzy controller without professional experience,membership functions of then-part and control rules are optimized by means of genetic algorithm simultaneously.Simulation result shows the proposed controller exhibits excellent performance and satisfies control demand of the system adequately.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2010年第3期392-396,共5页
Journal of University of Electronic Science and Technology of China
基金
部级预研项目
关键词
抖振
电液系统
模糊滑模控制
遗传算法
仿真
chattering
electro-hydraulic system
fuzzy sliding mode control
genetic algorithm
simulation
