基于Bang-Bang模糊自适应PID的制动缸压力控制研究

Research on brake cylinder pressure control based on Bang-Bang fuzzy adaptive PID

轨道车辆制动缸压力控制模块具有非线性、时变、多因素干扰等特点。为了实现对制动缸压力的良好控制,文章分析了传统Bang-Bang控制和比例积分微分(PID)控制方法的不足,提出了一种基于Bang-Bang模糊自适应PID的粗微调压力控制方法,并对压力传感器采集的压力进行自适应滤波。经仿真验证,该方法控制的制动缸压力具有响应快、稳态精度高、阀动作次数少等优点,且在-25 ℃环境下可取得同样的控制效果,保证了系统的鲁棒性。

The brake cylinder pressure control module of rail vehicles has the characteristics of nonlinear,time-varying and multi-factor interference.In order to achieve the good control of the brake cylinder pressure,this paper analyzes the defects of the traditional Bang-Bang control and PID control methods,and proposes a pressure control method of coarse tuning and fine tuning based on Bang-Bang fuzzy adaptive PID control.This method also carries out adaptive filtering for the pressure collected by pressure sensor.Simulation results show that this method has the advantages of quick response,high stable precision and less valve action,and the same control effect can be achieved at -25 ℃,which ensures the robustness of the system.