基于LabVIEW直流电机转速测控系统的设计  

Design on measurement and control system of the DC motor speed based on LabVIEW

作　　者：张应和[1] ZHANG Ying-he(School of Mechanical and Electrical Engineering,Xi’an Railway Vocational & Technical Institute,Xi’an710026,China)

机构地区：[1]西安铁路职业技术学院机电工程学院

出　　处：《电子设计工程》2019年第12期66-70,共5页Electronic Design Engineering

摘　　要：电机转速的精确度、实时性和稳定性直接影响电机调速系统的性能,文中介绍了一款基于LabVIEW软件平台的直流电动机转速测量控制系统,利用增量式光电编码器将电机的转速转换为脉冲信号,通过计算机LabVIEW软件里的用户界面对电机转速进行设定,设定范围为0~2500r/min;经过多次调试,得出理想的PID控制参数(P=1,I=1.2,D=0);再通过数据采集卡输出给电机驱动芯片来完成对电枢电压的控制,最后发现当直流电机电枢电压控制在0~2.8V范围内,电机实际输出转速为最佳状态。The accuracy,real-time and stability of the motor speed directly affect the performance of the motor speed control system.Introduced a DC motor speed measurement control system based on LabVIEW software platform,converting the speed of the motor to a pulse signal using an incremental photoelectric encoder,Set the motor speed through the user interface in the computer LabVIEW software,range 0~2 500 r/min,After many times of debugging,obtain the ideal PID control parameters(P=1,I=1.2,D=0),and controlling the motor armature voltage by outputting the data acquisition card to the motor drive chip.Finally,the actual output speed of the motor is optimal when the DC motor armature voltage is controlled within the range of 0~2.8 V.

关 键 词：LABVIEW PID 数据采集 电机转速 

分 类 号：TN6[电子电信—电路与系统]