工程机械车辆液压底盘二次调节模拟加载试验台的解耦控制

Decoupling Control of the Secondary Regulation Load Simulation Test Equipment for Hydraulic Chassis of Engineering Machinery Vehicle

针对工程机械车辆液压底盘模拟试验台中驱动系统的转速控制子系统与加载系统的转矩控制子系统的耦合问题,分析其对整套系统控制性能的影响。结合本试验台的特点,设计了一个基于单神经元PID控制的解耦网络,并给出了网络构造的全过程。实验以及仿真研究结果表明,通过在控制系统中加入特定的解耦网络,实现了驱动系统的转速控制子系统与加载系统的转矩控制子系统间的动态近似完全解耦,使两个子系统近似成为独立的控制系统,从而使系统的控制性能得到明显改善,为实际调试工作奠定了基础。

The influences of coupling on control property were analyzed in the secondary regulation load simulation test equipment for the hydraulic chassis of engineering machinery vehicles. The coupling problem occured between the speed control subsystem and torque control subsystem. Based on single neural PID control, structure and single neutral PID decoupling algorithm were proposed. Experimental and simulation results show that this method realizes decoupling of two subsystems if we install certain decoupling control network in the control system, two subsystems operate almost independently and system dynamic performance can be improved obviously. It can lay a foundation for the practical debug work lately.