含多级油缸的液压举升系统智能PID控制研究

给出了应用电液比例技术对多级液压缸驱动的攀升系统进行闭环速度控制的方法，在常规PID控制的基础上，引入了自适应神经元对PID控制参数进行在线调整，实现了对多级缸系统运动过程的智能控制。该方法保持了常规控制方法结构简单、易于实现的特点，同时可以更好地适应系统参数时变和外部干扰的影响，提高了控制精度。仿真结果表明，智能PID控制效果优于常规控制方法。

Study on Intelligent PID Control of Hydraulically Driven Lift System with Multistage Hydraulic Cylinder

A closed loop velocity control scheme of the hydraulically driven lift system based on electrohydraulic proportional control technique was given. Intelligent PID control algorithm was implemented by adding adaptive neurotic element in the traditional PID controller. The movement control of the lift system with multistage hydraulic cylinder was intelligentized in virtue of the intelligent PID controller which can adjust the control parameters online. This method has the features of simple structure and easy realization as traditional PID controller, and furthermore, it can adjust to the system parameter change and external disturbance and improve the control precision. Simulation results show that this algorithm is more effective than conventional method.