To evaluate the software behavior of the electronic control unit (ECU) of automotive electrical parking brake (EPB), a software- in-the-loop (SiL) simulation system is built. The EPB is simulated by ARX (auto-r...To evaluate the software behavior of the electronic control unit (ECU) of automotive electrical parking brake (EPB), a software- in-the-loop (SiL) simulation system is built. The EPB is simulated by ARX (auto-regressive with auxiliary input) model, ARMAX (auto-regressive moving average with auxiliary input) model, and NNARMAX (neural network ARMAX) model. By system identification, the ARX(3,4,2), ARX(4,4,2), ARMAX(3,3,1,1), and ARMAX(4,4,3,2) models are derived. Validation results show that the four-order ARMAX model and the NNARMAX model better simulate the actuator of the EPB.展开更多
针对目前电子驻车系统EPB(electrical parking brake)的执行部件EPB卡钳的EOL(end of line)性能在线测试方法不够完善的现状,引入计算机控制、高精度数据采集、MSA测量系统分析等技术,设计具有快速正反转切换且防过冲功能的测试电路以...针对目前电子驻车系统EPB(electrical parking brake)的执行部件EPB卡钳的EOL(end of line)性能在线测试方法不够完善的现状,引入计算机控制、高精度数据采集、MSA测量系统分析等技术,设计具有快速正反转切换且防过冲功能的测试电路以及模拟EPB卡钳驻车制动机构,研制一套EPB卡钳EOL性能在线测试系统,利用特征点处理算法对测试数据处理,实现对EPB卡钳电流、力值特性的检测和评估,并对系统重复性和不确定度进行评定,测量能力指数均大于1.33,评定结果均符合相关标准。展开更多
基金Sichuan Province Key Discipline Con-struction for Automotive Engineering ( No.SZD0410 )Research Foundation of Xihua University (No.R0620301)
文摘To evaluate the software behavior of the electronic control unit (ECU) of automotive electrical parking brake (EPB), a software- in-the-loop (SiL) simulation system is built. The EPB is simulated by ARX (auto-regressive with auxiliary input) model, ARMAX (auto-regressive moving average with auxiliary input) model, and NNARMAX (neural network ARMAX) model. By system identification, the ARX(3,4,2), ARX(4,4,2), ARMAX(3,3,1,1), and ARMAX(4,4,3,2) models are derived. Validation results show that the four-order ARMAX model and the NNARMAX model better simulate the actuator of the EPB.
文摘针对目前电子驻车系统EPB(electrical parking brake)的执行部件EPB卡钳的EOL(end of line)性能在线测试方法不够完善的现状,引入计算机控制、高精度数据采集、MSA测量系统分析等技术,设计具有快速正反转切换且防过冲功能的测试电路以及模拟EPB卡钳驻车制动机构,研制一套EPB卡钳EOL性能在线测试系统,利用特征点处理算法对测试数据处理,实现对EPB卡钳电流、力值特性的检测和评估,并对系统重复性和不确定度进行评定,测量能力指数均大于1.33,评定结果均符合相关标准。