【摘要】 针对旋转机械振动信号分析中的计算阶次跟踪方法的局限性,提出基于匀角加速度方程的计算阶次跟踪方法,并将该方法与线性插值、三次样条插值等方法复合在一起,根据旋转机械转角加速度的大小,选择相应的方法进行阶次重采样,实现基于角加速度的复合计算阶次跟踪。在转速变化缓慢时,采用线性插值方法;在转速变化比较大时,采用匀角加速度方程方法;在转速变化剧烈时,采用三次样条插值的方法。复合计算阶次跟踪方法兼顾计算的效率和精度,对某滤波减速器性能试验台中交流伺服电动机在升、降速阶段引起的振动实测试验结果表明了此方法的正确性机可行性。更多还原

【Abstract】 To overcome the limitation of computed order tracking in vibration signal analysis for rotating machine,the hybrid computed order tracking method based on constant angular acceleration is proposed.Combined with the linear interpolation method,the constant angular acceleration equation and the cubic spline interpolation method,the proposed method can choose the corresponding method to implement order re-sampling according to the change of angular acceleration of rotating machine,which balances the efficiency and accuracy of the arithmetic.When the change of rotary speed is slow,the linear interpolation method is adopted.When the change of rotary speed is great,the constant angular acceleration equation is adopted.When the change of rotary speed is acute,the cubic spline interpolation method is adopted.The experimental results show that the proposed method is feasible and effective.更多还原