电动助力转向PDC功能跑偏补偿原理及测试分析

Analysis of Electrical Power Steering PDC Function Principle and Optimization on Pull to Right Issue of Vehicle

车辆行驶跑偏问题一种常见的影响车辆使用性能的失效模式,文章根据车辆行驶跑偏特性,提出拉拽补偿(PDC)功能场景识别、补偿扭矩计算及PDC补偿扭矩输出三个阶段,并将跑偏考核指标偏移时间(TTD)和保舵力(TTT)纳入PDC功能验收性能指标。阐述并论证PDC功能对跑偏问题优化的贡献,具有一定的工程应用价值。

Vehicle running off is a common failure mode that affects vehicle performance.According to the vehicle running and deviation characteristics,three stages of pull drift compensation(PDC)function scene identification,compensating torque calculation and PDC compensating torque output are proposed.The test indexes time to drift(TTD)and torque to track(TTT)are included into the performance indexes of PDC function acceptance.The contribution of PDC function to the optimization of deviation problem is expounded and demonstrated,which has certain engineering application value.