电动助力转向系统控制策略快速测试平台研究

Rapid Test-bench for Electric Power Steering Control Strategy

为了实时测试验证在各种服役条件下电动助力转向系统(EPS)控制策略的可行性与可靠性,基于灵活、快速和实时的模拟EPS系统阻力矩和方向盘输入力矩,运用Matlab/Simulink图形化编程的便利性和dSPACE系统的实时性建立EPS快速控制原型,产生控制EPS系统服役力矩模拟电机的控制信号,模拟车载环境下的发动机信号、车速信号等EPS输入信号,采集EPS工作过程中的各种信息,并将测试结果在ControlDesk环境的人机交互界面进行显示和分析,最终搭建了EPS控制策略快速测试平台。测试与运用结果表明,试验台使用方便稳定,测试精度满足设计要求。

The feasibility and reliability of control strategy for electric power steering system （ EPS） needed to be verified un-der various working conditions.The test was based on the fast and real-time simulation of resistance torque of EPS system and input torque of steering wheel.According to the convenience of graphical programming of Matlab/Simulink and real -time of dSPACE systems, the EPS rapid control prototype was established.The signal of control EPS system service torque simulating the motor was generated.The EPS input signals including engine signals and vehicle speed signals were simulated in automotive envi-ronment.Various kinds of information were collected during the course of EPS work.The obtained test results were displayed and analyzed based on the interface of man-machine in the Control-Desk environment.The test bench of EPS control strategy was eventually built.The debugging and actual application results showed that the test bench was easy and stable to use and the test precision met the design requirements.