基于伺服电机的齿轮箱传动精度检测系统

Transmission accuracy test rig for gearboxes based on servo motors

针对传统齿轮箱传动精度检测设备中存在由于安装调整复杂而影响测试精度的问题,提出了一种采用伺服电机检测齿轮箱传动精度的新方法,直接利用伺服电机集成驱动电机和编码器实现了检测中系统的驱动和转角信号采集,简化了传动精度检测系统结构。该系统以伺服电机、数据采集卡为硬件基础,在被测齿轮箱的输入轴与输出轴两端分别连接一台伺服电机,用作驱动与负载;以LabVIEW为软件平台,实现了高频时钟脉冲细分编码器信号的空间脉冲的方法,显示了被测齿轮箱传动精度曲线,对系统的软、硬件实现方法进行了初步探索,对伺服电机集成的编码器信号进行了采集。研究结果表明,伺服电机编码器信号的采集与复用是可行的,因此利用伺服电机测量齿轮箱传动误差的方法具有可行性。

In order to solve the problems of the complicated installation adjustment and the testing accuracy influence in the testing equipment of traditional gear box transmission accuracy, a novel method to test it with servo motor was investigated. This new way, which directly used the servo motor to integrate a driving motor and an encoder to realize the signal acquisition of both the actuator and torsion angle, simplified the transmission accuracy system structure. In the system, based on the hardware such as servo motor and data acquisition card, two servo motors were utilized as the actuator and the load at both the input and output shaft of the tested gear box. In addition, high frequency clock pulse was adapted to divide the encoder signal of the space pulse based on the LabVIEW. Then, transmission accurate curves of the tested gear box were displayed and the implementation of the system＇s software and hardware was explored initially, the experimental signals of the integrated servo-actuator encoder were acquired. The results indicate that the acquisition and reuse of the servo-actuator encoder signal are available, therefore, the method to measure the transmission accuracy of the gear box using a servo motor is feasible.