Analysis of tactical missile three-loop lateral acceleration autopilot in the time and frequency domain

Based on the linearized and small perturbation model of the longitudinal missile control system, the configuration, response time, robustness and capability of stabilizing a static unstable missile are studied for the aforementioned systems. A non-dimensional model of the autopilot is established and analyzed, and a new method for the three-loop autopilot design is put forward. The results indicate that the stabilizing loop system is more robust and capable of stabilizing a static unstable missile compared with the damping loop system, but its response time is longer; while the three-loop autopilot is more robust, and faster than the stabilizing loop system by designing a chief pole at lower frequency and a pair of higher frequency conjugate poles with a appropriate damping ratio.