Autopilot Design
QI Zai-kang, Lin Defu · 2019
This chapter focuses on autopilot design. An acceleration autopilot could not only achieve accurate tracking of the guidance normal acceleration command, but also help to speed up the autopilot response speed through feedback. Since the missile body is simply a component of the autopilot loop, a large variation of the missile body gain will make the autopilot design unacceptable when final robustness evaluation is performed. The frequency bandwidth frequency bandwidth of the stability augmentation loop is very high, so the missile body parameter variation will have little effect on the characteristics of the autopilot. The attitude autopilot has been used in the boosting phase of the early ballistic missile programs for trajectory control. It should be noted that the angular velocity loop of an attitude autopilot is to improve the damping of the attitude loop, so its phase angle compensation frequency area is designed close to the attitude loop crossover frequency.