基于模型的前置前驱变速器加载试验台控制策略设计

Design of Control Strategy for Load Test Bench of Front-engine Front-drive Transmission Based on Model

针对前置前驱变速器试验台用PLC或PC机控制时加载端产生较大扭矩差问题,提出了基于模型的控制策略设计。该策略基于模型设计,通过使用实时控制器调用动态链接库控制整体系统,采用加载端变频器扭矩模式控制驱动端转速,达到减小加载端扭矩差的目的。改进的控制策略同步控制加载端2个电机的扭矩信号,将驱动端转速作为反馈进行PI控制,试验结果显示改进后加载端扭矩差稳定在12 Nm内,试验达到要求。

A new control strategy is proposed for the problem of large torque difference when the front-engine front-drivetransmission test bench is controlled by PLC or PC. The strategy is based on the model design. By using the real-time controlleto invoke the dynamic link library to control the whole system, and using the load-sides inverter torque mode to control therdrive-side speed, to reduce the load-sides torque difference. The torque signal control strategy improves the synchronouscimonptrroovl eodf ltohaed lo-saiddiensg t eonrqdu oef dtwifofe mreontcoer si,s satnabdi ltihzee dd rwiviteh-isni dthee s rpaenegde i os fc 1o2nNtromll,e dw bhyi cPhI mase ethtse t feeset drebqauckir.e Tmeesnt trse.sults.