挖掘机功率匹配测试系统研究与设计

摘要

为了研究液压挖掘机中发动机与液压泵的功率匹配性能,优化其控制策略,在通过对液压挖掘机的功率匹配原理进行分析后,提出了一种基于LabVIEW、移动控制器和USB/CAN设备的可视测试系统方案.该方案采用Cylindro控制器作为数据采集与控制的核心,控制器采集液压系统与发动机的相关信号,并驱动电磁比例阀以及动油门电机实现液压泵与发动机的功率控制；采用CAN通讯的方式进行数据传输,并利用虚拟测试软件LabVIEW进行人机界面的设计,完成测试数据的显示与保存.试验表明:该测试系统能满足要求,且稳定可靠.%In order to research the power match system' s performance in the excavator and optimize the control policy, the theory of power match in excavator was analyzed and a visual testing system based on Lab VIEW、 controller and USB/CAN device was proposed. The program uses Cylindro controller as the date acquirement and control unit,the controller acquires the relate signals of hydraulic system and the engine, drives the proportional solenoid valve and motor to control the power of pump and engine; the testing data was transmitted by CAN bus, displayed and saved by LabVIEW . The experiment results show that the test system can meet the requirements and reliable.