冲击载荷作用下高速机械传动误差测试仿真

Testing and Simulation of Transmission Error of High Speed Mechanical under Impact Load

高速机械传动误差在冲击载荷作用下,难以获得精准的测量结果,于是构建由上、下位机组成的冲击载荷作用下机械传动误差测试模型。传动误差测试模型的上位机提供通信、读写等服务,下位机集数据采集与读取功能,共同获取和处理机械传动信号;对比2路不同频率的脉冲信号,得到高速机械传动拉格朗日插值,即可计算齿轮输出轴与输入轴间理论转角与实际转角的差,得到机械的传动误差。通过误差测试仿真,验证所提方法测试结果符合一级蜗轮副的测量标准,且不会受到冲击载荷作用影响出现测试信号中断现象,误差曲线与实际拟合程度高。

Under the impact load,it is difficult to obtain accurate measurement results for the transmission error of high-speed machinery.Therefore,a mechanical transmission error testing model composed of upper and lower computers under the impact load was constructed in the paper.The upper computer provided services such as communication,reading and writing,and the lower computer had many functions such as data acquisition and data reading,both of which collected and processed mechanical transmission signals.After comparing the pulse signals with different frequencies in two channels,we obtained Lagrange interpolation of high-speed mechanical transmission.In other words,we can calculate the difference between the theoretical and actual rotation angles of gear output shaft and gear input shaft.In this way,the mechanical transmission error was obtained.Through the error simulation,it is verified that the test results of the proposed method reach the measurement standard of the first-level worm gear pair,and the test signal will not be interrupted due to the impact load.In addition,the error curve has a ftting degree with the actual curve.