Design Method of a Compensation Decoupling Controller Applied to the Bank-to-Turn Autopilot

Abstract

A design method of a compensation decoupling controller applied to the bank-to-turn autopilot is pre-sented for overcoming the cross-coupling disturbance caused by the high rolling angular velocity of the missile body. The zero assignment and the transfer characteristics of the disturbance transfer function are improved in the way that the cross-coupling disturbances are fed back to the input of the controller together with the measured outputs, and then the influence of cross-coupling disturbance on the output evaluation is effectively suppressed. By minimizing the transmission gain of the disturbance transfer function at the closed-loop poles of the system,the numerical solution of the decoupling compensation control parameters is obtained.The simulation verification of the decoupling control parameters is obtained by using the pitch-yaw-roll channel cross coupling model. The simulation results show that the compensation decoupling controller presented in this paper is valid to suppress the peak of the angle of attack in yaw control channel, and to improve the response quality of pitch control channel.

Keywords

• |bank-to-turn maneuver control|cross coupling|autopilot|compensation decoupling control|control parameter optimization|guidance and control