基于LabVIEW的汽车刹车盘摩擦磨损特性信息采集系统设计

良好的制动性是汽车安全行驶的必要条件,而刹车盘的摩擦磨损性能在整个汽车制动系统中起着举足轻重的作用。为便于获取用于刹车盘摩擦磨损特性表征的压力、摩擦力、转速、温度等参数信息,本文基于虚拟仪器技术LabVIEW设计了刹车盘摩擦磨损特性信息采集系统。该系统的硬件部分主要包括用于获取刹车盘特性参数的传感器,以及传感器输出信号调理模块和用于A/D转换的数据采集卡;在虚拟仪器技术LabVIEW环境下编写了信息采集及处理界面和历史信息查询界面的程序。调试运行结果表明,该信息采集系统可以实现对刹车盘摩擦磨损特性参数的准确采集与实时显示以及对所采集数据的简便查询,能够满足刹车盘摩擦磨损特性信息采集的要求。

Design of friction wear property information acquisition system of automobile brake disk based on LabVIEW

Excellent brake performance is the necessary condition to securely driving, and the friction wear property of brake disk serves a significant function in brake system. In order to acquire the parameters (normal force, friction force, rotate speed and temperature) which are used to characterize friction wear properties of brake disk, friction wear property information acquisition system based on virtual instrument technology LabVIEW is designed. Hardware of this system mainly consists of sensors utilized as acquiring information on friction wear property, as well as signal conditioning module and data acquisition card used as A/D transformation. Under the circumstance of virtual instrument LabVIEW, information acquisition and processing interface and former information query interface are programmed. Debugging results present that the designed information acquisition system can accurately acquire the demanded information, intuitively display the obtained information, and easily achieve the query of former information. Therefore, the designed data acquisition system satisfies the demand of information acquisition related to friction wear property of brake disk.