本文推导出二阶振荡平滑装置的各函数公式和系统参数同性能指标间的关系,并总结出参数计算表。根据观察时间T_4和超调量⊿_2,用此表可很简便地计算出平滑装置的各个参数,进而计算出各函数的数值,并举了实例。在实例中还介绍了转值、电比例尺和速比的计算方法。 This paper deduces the second-order oscillation smoothing device function formula and system parameters with the relationship between performance indicators, and summed up the parameter calculation table. According to the observation time T_4 and overshoot ⊿_2, using this table can easily calculate the smoothing device parameters, and then calculate the value of each function, and give an example. In the example, the method of calculating the transfer value, the electrical scale and the speed ratio is also introduced.