磁流变液制动器试验台架控制系统仿真设计

Simulation design of test bench control system for MRF brake

针对磁流变液制动器试验台架设计了控制系统。在Matlab/simulink中建立了由三相异步交流电机、SPWM型变频器、延时环节、V/F曲线模块等组成的系统仿真模型,通过不断更改控制参数,仿真计算出了变频器加速时间的最佳设定值,并且为台架系统设计了PID控制器,以完成试验台架的恒转速控制,达到对制动器拖动试验的目的。

The simulation model which set up in Matlab/Simulink consists of three-phase asynchronous AC motor, SPWM inverter, delay links, V/F curve modules and other components. The optimal inverter acceleration setting time was calculated by constantly changing the test parameters, and the PID controller for test bench system was designed to complete the constant speed control, which achieves the purpose of the dragging brake test.