模糊滑模控制在双容水箱中的应用研究

Research on the Application of Fuzzy Sliding Mode Control in Dual Water Tank

针对常规控制在一些复杂液位控制系统中不能取得较理想控制效果的问题,提出了一种将模糊控制与滑模变结构控制相结合的模糊滑模控制方法。采用Matlab/Simulink设计了模糊滑模控制器,并将该控制器应用于典型二阶控制对象双容水箱系统进行仿真分析,以验证该控制方法的性能。仿真结果表明,该控制方法在保证系统动态、稳态性能的同时,削弱了抖振,使系统更快速地趋于稳定,提升了系统的动态性能及实用性。与常规控制相比,模糊滑模控制具有较好的自适应性和鲁棒性,适用于复杂液位控制系统。

In conventional control, idea] control effect cannot be achieved for complex liquid level control system, thus the fuzzy sliding mode control method which combines fuzzy control and sliding mode variable structure control is proposed. By adopting Matlab/Simulink, the fuzzy sliding mode controller is designed, and the controller is applied for typical second order controlled object, i. e. , the dual water tank system for simulation analysis to verify the performance of this control method. The results of simulation show that this control method ensures dynamic and static performance of the system, and weakens the chattering, thus to make the system more quickly stabilized, the dynamic performance and practicability of the system are improved. Comparing with conventional control, the fuzzy sliding mode control possesses better adaptability and robustness; it is more suitable for complex level control systems.