轨道交通牵引电传动系统高精度混合实时仿真研究

Research on high fidelity hybrid real time simulation for railway traction drive system

在轨道交通牵引电传动系统实时仿真领域,针对现有的基于处理器硬件回路仿真器存在计算误差和基于FPGA硬件回路仿真器受制于设备资源的问题,本文提出了一种基于处理器和FPGA的混合硬件回路仿真方法。该仿真方法通过计算资源的合理分配,达到减少处理器计算引起的计算误差和FPGA资源消耗的目的。通过真实控制器闭环测试试验,证实了这种混合仿真方法可以达到与纯FPGA Hi L仿真器几乎相同的仿真计算精度。

In the real time simulation of railway traction electric drive system field, considering the issues that with considerable discrepancies in Hi L（Hardware-in-the-Loop） simulator based on processor and the simulating model of Hi L simulator based on FPGA technology that limited by device resources, this paper developes a new hybrid Hi L simulation method based on processor and FPGA technology. This simulation method can effectively reduce the discrepancies caused by processor and the consumption of FPGA devices resource by allocating the simulating resources with a more reasonable method. The test results of closed-loop experiment verify that this hybrid simulation method can get the almost same computing precision as the pure FPGA Hi L simulator.