冲压式气动伺服系统动态精度分析及校正装置设计

Dynamic accuracy analysis and the verifying unit design for ram-air servo system

从小型战术导弹总体设计的角度提出了一种继电控制冲压式伺服系统的动态精度和校正装置的工程分析和设计方法。由于自振荡状态的存在,伺服系统的动态精度不仅与伺服系统的参数有关,还受到输入信号幅值、频率以及自振荡频率的影响。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。最后结合某工程实例,验证了上述方法的正确性。

Based on the small tactical missile system design, an engineering method for ram-air servo system dynamic accuracy analysis and verifying unit design is put forward. Because the self-oscillation, the dynamic accuracy of the servo system is not only correlative with servo system parameters but also influenced by the input signal amplitude, frequency and the system self-oscillation state. 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. At last, an example to demonstrate the correctness of the above-mentioned method and the conclusion are given.