汽车液压助力转向系统的数据采集及实例分析

在台架试验的基础上,引入车载测试系统,搭建了一套可用于液压助力转向器道路试验的数据采集系统.通过转向参数测试仪、陀螺仪、雷达车速仪、应变仪、流量计以及频率电流转换器等将转向盘转角、扭矩、车辆运行参数、转向器油压、流量信号转换成模拟电压信号,进行实时采集和存储,并进行实时监控.试验中可同时采集包括转向系统及车辆运行参数在内的共13个物理量.进行了路牙试验以及圆周回转,试验的结果与理论分析相吻合,证明了该系统的可靠性.

Data Acquisition and its Analysis of Automobile Hydraulic Power Assisted Steering System

A data gathering system for on-road experiments of hydraulic power assisted steering gear was designed based on the test bench,using a PC-based mobile data acquisition system.The steering wheel angle,torque,vehicle running parameters,oil pressure of steering gear and oil return flow signals were converted into analog signals through steering parameters tester,gyroscope,radar speed sensor,strain gauge,flow gauge and frequency-current converter.13 parameters were colleted,stored and monitored in real-time during the experiments.The wheel-shock and circling-round experiments were conducted,the results correspond with those of the theoretical analysis,which validates the credibility of this data gathering system.