基于STM32的车辆驱动轮瞬时输出功率测量系统研究  

Research on Instantaneous Output Power Measurement System of Vehicle Driving Wheel Based on STM32

作　　者：赵玮 张海涛 何晓晖 郝建新 袁媛 Zhao Wei;Zhang Haitao;He Xiaohui

机构地区：[1]陆军工程大学国防工程学院,江苏南京210007 [2]陆军工程大学野战工程学院

出　　处：《工程机械》2021年第8期30-36,I0016,共8页Construction Machinery and Equipment

摘　　要：针对在瞬态工况下测功机滚筒力矩不平衡导致车辆驱动轮瞬时输出功率测量精度不足的问题,提出一种基于S TM3 2的车辆驱动轮瞬时输出功率测量系统。该测量系统由信号放大电路、滤波电路、相位差检测电路及A/D转换模块等组成,通过周期法测量方波信号的频率获得滚筒转速和角加速度,利用D触发电路测量相位差信号获得滚筒转矩。试验结果表明,该测量系统通过增加对滚筒角加速度的测量,提高了不平衡条件下车辆驱动轮瞬时输出功率测量的准确性,可为测功机模拟车辆道路行驶工况提供数据支持。In view of problem that measurement accuracy of instantaneous output power of vehicle driving wheel is insufficient due to unbalanced drum torque of dynamometer under transient condition,a measurement system of instantaneous output power of vehicle driving wheel based on STM32 is proposed.The measurement system consists of signal amplification circuit,filter circuit,phase difference detection circuit and A/D conversion module.Drum speed and angular acceleration are obtained by measuring frequency of square wave signal with periodic method,and drum torque is obtained by measuring phase difference signal with D trigger circuit.The test results show that the measurement system improves accuracy of instantaneous output power measurement of vehicle driving wheel under unbalanced conditions by increasing measurement of angular acceleration of drum,which can provide data support for dynamometer to simulate road driving conditions of vehicle.

关 键 词：瞬时功率 角加速度 STM32 A/D转换 

分 类 号：U467.45[机械工程—车辆工程]