For the amplitude-frequency response at the self-oscillation frequency is one, a method to calculate the dynamic accuracy and the index of the servo system is provided, by comparing them, the scheme to design the verifying unit is presented.

• 利用伺服系统在自振荡频率点的幅频特性为1这一特点，将输入信号频率、幅值、系统的自振荡状态和系统的参数联系起来，构建了伺服系统动态精度的计算公式和指标估算经验公式，并根据两者的关系提出动态精度校正方案。