一种基于LabVIEW的比例流量阀性能试验台  

A Performance Test Bench of Proportional Flow Valve Based on LabVIEW

作　　者：徐林兵 姜克壮[1,2] 邢科礼 金侠杰[1,2] XU Linbing;JIANG Kezhuang;XING Keli;JIN Xiajie

机构地区：[1]上海大学机电工程与自动化学院,上海200072 [2]上海腾液液压机电设备技术工程有限公司,上海201901

出　　处：《计量与测试技术》2021年第4期33-35,共3页Metrology & Measurement Technique

摘　　要：介绍了一种大流量的比例流量阀在恒压差情况下的稳态性能测试方法。开发了一套基于LabVIEW的比例流量阀试验台。采用变频电机加比例溢流阀联合稳压的策略,并能通过CAN总线实现比例放大器PWM驱动频率,颤振频率和颤振幅值的独立调节。最终结合LabVIEW绘制比例流量阀的输入信号-输出流量特性曲线、流量-阀压降特性曲线和阶跃响应曲线。A steady-state performance test method for large-flow proportional flow valve under constant pressure difference is introduced.A set of proportional flow valve test bench has been developed based on Lab-VIEW.The strategy of combined frequency conversion motor with proportional relief valve is adopted to stabilize pressure.Also,the CAN bus realized the independent regulation of PWM driving frequency,chatter frequency and chatter amplitude of proportional amplifier.Finally combined with LabVIEW,the input signal-output flow characteristic curve,flow-valve pressure drop characteristic curve and step response curve of the proportional flow valve were drawn.

关 键 词：比例流量阀 稳态性能 试验台 CAN总线 

分 类 号：TH138.522[机械工程—机械制造及自动化]