航空布撒器倾斜转弯自动驾驶仪设计与仿真

航空布撒器动力学具有非线性、强耦合、大参变的特点.针对动力学模型耦合和气动系数不确定性,给出了倾斜转弯自动驾驶仪的三通道独立设计方法.首先,采用混合灵敏度理论设计俯仰和滚转通道自动驾驶仪,以保证弹体在大空域范围内有较好的指令响应特性和稳定性.针对快速滚转引起的耦合,在偏航通道中引入攻角和滚转角速率信息,实现滚转/偏航运动解耦,抑制侧滑角.全弹道仿真表明,该方法设计的驾驶仪能适应大范围的气动参数变化,具有很好的鲁棒性,并能有效地实现倾斜转弯控制的好r forl coordinated law for yaw channel is givenaft Using .

Design and Simulation of a Coordinated BTT Autopilot for Airborne Dispenser

The dynamics of airborne dispenser is highly nonlinear,cross-coupling and seriously parameter-variant in nature.In the paper a method by which BTT autopilot is designed respectively for each channel is given in order to deal with the system cross-coupling and aero-dynamical coefficient uncertainties.First,robust autopilot for pitch and roll channel is designed using mixed-sensitivity method,so that it performs a good response feature and has a good stability in a large flight envelope.Then the information of attack angle and roll rate are introduced into yaw channel in order to decouple the roll/yaw channel and reduce the sideslip angle induced by rapid rolling maneuver.Finally,nonlinear simulation results of full envelope show that the autopilot designed by this way can fly stably in a large envelope and can carry out excellent turns with small sideslip angle.