【摘要】 开发发动机管理系统(EMS)时,经常使用硬件在环(HIL)实时仿真测试。为了使HIL仿真测试系统具备循环内转速波动模拟功能,提出了一种简捷的转速波动模拟计算方法。该方法结合仿真发动机稳定运行时的运转不均匀度和相应的实际发动机循环内转速的变化趋势,描述循环内转速波动信息,并生成曲轴转速仿真信号,用于发动机电控单元(ECU)的测试。给出了CG125发动机EMS开发中的应用实例,应用表明,该方法处理HIL测试中的转速波动信号的仿真问题,完全能够满足其实时性要求。更多还原

【Abstract】 Hardware-in-the-loop(HIL) real-time simulating test is frequently used during the development of engine management system(EMS).To make HIL simulating test have the simulating function for speed cyclic fluctuation,a new method is proposed.This method combines the simulating speed non-uniformity of engine at steady state operation and the tendency of real engine speed to reflect speed cyclic fluctuation and form the crank angle simulating signal for the testing of engine control ECU.An application example was given for EMS development of CG125 engine.The result shows that this method can simulate the speed fluctuation signal and meet the real-time requirement.更多还原