防空导弹BTT控制解耦算法

Research on BTT Control Decoupling Algorithm for the Air-defense Missile

防空导弹为提高射程、平均速度,配置冲压发动机,要求导弹在飞行过程中侧滑角小,同时只允许导弹有正攻角;与侧滑转弯(STT)导弹相比,倾斜转弯(BTT)导弹有机动性强、稳定性好、升力大等优点,但因面对称气动外形和快速滚转决定了BTT导弹存在运动学耦合、气动耦合和惯性耦合等耦合因素;在考虑耦合的情况下,进行BTT自动驾驶仪解耦设计;通过非线性仿真分析表明,能够实现精确控制和快速滚转的要求,有效地减小导弹的侧滑角,保证导弹偏航通道稳定性。

In order to improve the greater range and average velocity of the air-defense missile, ramjet en-gine which needs to maintain small sideslip angle and plus attack angle is used. Unlike ＇a skid-to-turn （STT） autopilot, bank-to-turn （BTT） missiles have advantages of large maneuverability, strong stabiliza-tion and high lift, but BTY missiles have strong coupling problems of the kinetic coupling, inertia coupling and air dynamic coupling because of its asymmetric configuration and rapid roll. According to the cou-pling, the BTF autopilot is given with the decoupling design. The non linear simulation shows that the de-sign could achieve precise response and rapid roll, decrease the sideslip angle, and maintain the stability of yaw channel.