基于终端滑模的直接力/气动力复合控制系统设计

Design of Blended Lateral Thrust and Aerodynamic Control System Based on Terminal Sliding Mode

关键词:  直接力/气动力复合控制  非奇异快速终端滑模  动态控制分配  控制力矩

Key words:  Blended lateral thrust and aerodynamic compound control  Nonsingular fast terminal sliding mode  Dynamic allocation  Control moment

摘要:

针对空空导弹直接力/气动力复合控制问题，建议一种基于非奇异快速终端滑模控制方法(NFTSM)和动态控制分配技术的复合控制策略。根据导弹纵向运动模型设计非奇异快速终端滑模控制器，获得建立导弹过载所需要的控制力矩。采用动态控制分配将期望的控制力矩映射到气动舵和直接力装置。仿真结果表明，提出方法适用于空空导弹直接力/气动力复合控制系统设计，能够快速精确跟踪过载指令。

Abstract:

A control strategy is proposed for the air-to-air missile with the blended lateral thrusters and aerodynamic surface control based on the nonsingular fast terminal sliding mode control(NFTSM) and the dynamic control allocation. A NFTSM controller is designed using the longitudinal dynamic model of the air-to-air missile to obtain the control moments required by the overload of the missile. The required control moments are mapped into the respective control commands on the aerodynamic deflector and the thrust engine array using the dynamic control allocation to realize the fast and the accurate tracking of the overload of the missile. The proposed blended control strategy can fast track the overload command accurately, proving a basis for the design of air-to-air missile with lateral thrust and aerodynamic control.