变转速液压测控实验台的设计与开发  

Development of variable speed hydraulic measuringand control experimental platform

作　　者：刘永[1,2] 谷立臣[3] LIU Yong;GU Li-chen(School of Mechanical Engineering,Hubei University of Automotive Technology,Shiyan 442002,China;School of Construction Machinery,Chang an University,Xi an 710064,China;School of Mechanical-Electronic Engineering,Xi an University of Architecture and Technology,Xi an 710054,China)

机构地区：[1]湖北汽车工业学院机械工程学院,湖北十堰442002 [2]长安大学工程机械学院,陕西西安710064 [3]西安建筑科技大学机电工程学院,陕西西安710054

出　　处：《机电工程》2021年第4期507-510,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51675399);湖北省教育厅科学技术研究资助项目(B2019081)。

摘　　要：针对教学与科研实验开放性、扩展性的需求问题,设计、开发了变转速液压测控实验台。设计了实验台的硬件部分、电气控制部分及测控系统结构部分;采用了以工控机和LabVIEW软件的测控平台,开发了不同的程序,以对液压马达转速、系统流量与压力等物理量进行测量和控制;以设计的液压马达转速闭环PID控制实验为例,分析了该控制方式的原理,并进行了液压马达转速阶跃变化、负载恒定工况条件下的验证实验。研究结果表明:当液压马达目标转速阶跃变化、负载恒定情况下,采用该控制方式时的实际值能很好地响应目标值的变化,并动态地维持在目标值附近;该实验台具备良好的开放性、扩展性,能满足教学与科研的需求。Aiming at the need of openness and extensibility with the teaching and scientific research,the variable speed hydraulic measuring and control experimental platform was designed.The parts of the hardware,electric control and structure of the measuring and control system were designed on the experimental platform.With the industrial control computer and the LabVIEW software,the physical quantities such as the hydraulic motor speed,system flow and pressure,was measured and controlled by the developed program.The designed hydraulic motor speed closed-loop PID control experiment was taken as an example,and the principle of this control mode was studied.The experiment was validated when the hydraulic motor targets speed step changed and the load was constant.The experimental results indicate that the actual value can be well responded to the change of the target and dynamically maintained near the target.The experimental platform has good openness and extensibility,and it can meet the need of the teaching and scientific research.

关 键 词：变转速 液压实验台 工控机测控系统 液压马达转速 PID闭环控制 

分 类 号：TH137[机械工程—机械制造及自动化]