仪器仪表/检测/监控
现代制造工程（ModemManufacturingEngineering）
2016年第9期
基于磁电传感器的液压马达转速测控系统设计
刘永"2，谷立臣”，杨彬"，吴振松"，陈萌"，王生怀
（1长安大学工程机械学院，西安710064;2湖北汽车工业学院机械工程学院，十堰442002；
3西安建筑科技大学机电工程学院，西安710054）
捕要：以变转速泵控马达液压系统为平台，设计了基于磁电传感器的液压马达转速测控系统。应用虚拟仪器技术，通过 LabVIEW软件编制液压马达转速测控程序，进行了相同负载工况条件下马达转速开环、闭环PID和模棚控制对比实验研究。实验结果表明：系统转速刚度较低，在开环控制中，马达实际转速存在降落；开环、闭环PID和模棚3种控制方式中，马达转速响应都存在滞后；开环控制响应快，存在稳态误差；闭环PID和模糊控制精度高，鲁棒性好；闭环PID调整时
间比开环和模糊控制长。马达转速测控系统简单、可靠，方案可行。关键词：液压马达：磁电式；转速传感器；转速控制
中图分类号：TH137文献标志码：A文章编号：1671—3133(2016)09—0126—06 D0I:10.16731/j. cnki.1671 3133.2016.09.025
Design of rotational speed measurement and control system abouthydraulicmotorbasedonmagneto-electricsensor Liu Yong'2,Gu Lichen', Yang Bin', Wu Zhensong', Chen Meng', Wang Shenghuai?(1 School of Construction Machinery,Chang'an University,Xi'an 710064,China;
2 School of Mechanical Engineering,Hubei University of Automotive Technology,Shiyan 442002,
Hubei,China;3 School of Mechanical-Electronic Engineering,Xi'an University of
Architecture and Technology,Xi'an 710054,China)
Abstract; Based on magneto resistive sensor and taken the variable rotational speed pump control motor hydraulic system as plat-form,hydraulic motor rotational speed measurement system has been designed in this paper. Application of virtual instrument technology ,the control and measurement program on the hydraulic motor rotational speed is finished through LabVIEW software. Under the same load conditions ,fuzzy control,open loop and closed loop experiment study has been finished about motor rotation-al speed. The experimental results show that,in the open loop control the stiffness of system rotational speed is lowed and actual rotational speed is decreased under load. In the open loop, closed loop PID and fuzzy three control modes, rotational speed re sponse is all time-variant, The response of open loop and fuzzy eontrol is quicker than the closed loop,while fuzzy and closed con-door paso e aauo s paads euoor oo o doo uado anoe a painpe saenqar ponaoaard ery se
and fuzzy control. Rotational speed of motor measurement and control system is simple,reliable and feasible. Key words hydraulic motor; magneto-electric;rotational speed sensor;rotational speed control
引言 0
常用测量转速的传感器有霍尔式、电容式、光电式和光电编码器等，其原理都是通过传感器发出脉冲电压信号，采用频率法对单位时间脉冲计数，或测量
单个脉冲周期时间，从而间接测得转速。周期法在低转速、频率法在高转速的使用场合时，测量精度比较高。文献[1]和文献[2]利用霍尔传感器，通过搭建单片机外围电路，设计了基于单片机的直流电动机转速测量系统。文献[3]用光电编码器设计了永磁同步电
国家自然科学基金资助项目（51275375）；湖北省自然科学基金资助项目（2013CFB045）；潮北省教育厅科学技术研究重点资助项目
（D20141802）：湖北省教育厅科学技术研究资助项目（B2015115）；期北汽车工业学院博士科研基金资助项目（BK201403） 126
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