基于可编程逻辑控制器的超声电机测试系统设计

摘要

为了给工程技术人员提供易于操控的超声电机特性测试设备,设计了基于可编程逻辑控制器(PLC)的测试系统.根据超声电机常用的特性要求,利用力矩传感器输出的脉冲信号,通过PLC的高速输入口,用梯形图实现力矩和转速的采集和显示.通过可编程逻辑控制器配套的人机界面,实现了触摸屏对超声电机的测试进行操作.测试系统能够完成超声电机机械特性测试、超声电机自动加减载测试、超声电机带负载起动特性测试和超声电机手动测试等4种模式.通过试验对该系统进行验证,达到易于操作的要求.%A test system based on programmable logic controller (PLC) was designed to provide engineering and technical personnel with easy to handle characteristics testing equipment of ultrasonic motor.The pulse signal of the torque sensor was output to the high-speed input port of the PLC.According to the testing requirements of ultrasonic motor,the torque and rotation speed were tested and displayed by using the ladder diagram,through the pulse input of torque sensor.Through the man-machine interface of programmable logic controller,the touch screen controls the testing of the ultrasonic motor.The testing system could complete four kinds of modes,such as the mechanical characteristic test of ultrasonic motor,automatic loading and unloading test,ultrasonic motor starting characteristic test with load and ultrasonic motor manual test.The system was verified by experiments.The system was easy to operate.