模糊PID控制在液压缸速度控制系统中的应用

Application of Fuzzy Pid Control in Hydraulic Cylinder Speed Control System

液压缸速度控制系统存在许多非线性因素,经典的PID控制器往往因参数整定不良,性能欠佳,导致控制效果不如人意。针对经典的PID控制器参数无法实时调整的缺陷,文章研究了1种模糊PID控制算法,利用模糊控制鲁棒性强,不需要依赖精确数学模型的优点,通过变论域与模糊推理的结合,实现了令人满意的PID控制。通过MATLAB仿真,验证了所设计的模糊PID控制系统比经典PID控制系统响应更快,超调更小,系统更平稳。

There are many nonlinear factors in the hydraulic cylinder speed control system.The classical PID controller often has poor parameter setting and poor performance,resulting in unsatisfactory control effect.Aiming at the defect that the parameters of the classical PID controller cannot be adjusted in real time,this paper studies a fuzzy PID control algorithm,which takes advantage of the strong robustness of fuzzy control and does not need to rely on accurate mathematical models.Through the combination of variable universe and fuzzy reasoning,Satisfactory PID control is achieved.Through MATLAB simulation,it is verified that the designed fuzzy PID control system has faster response,smaller overshoot and more stable system than the classical PID control system.