挠性飞行器姿态机动脉冲调宽控制系统设计

大挠性充液飞行器喷气姿态控制系统设计是一个复杂和关键的问题,为了抑制挠性振动,设计形状输入信号,选取双曲正切作为平滑函数,并和Bang-Bang控制对比研究.喷气脉冲调制采用工程上易于实现的脉冲调宽（PWM）设计方法,结合积分死区原理设计脉冲宽度,对具有挠性充液动力学特性的对象进行控制,抑制了振动模态和晃动模态,实现了平滑机动控制.通过数学仿真表明,形状输入法和合理的脉冲调宽逻辑可以有效抑制大挠性飞行器姿态机动控制过程中的挠性振动.

Pulse Width Modulated Attitude Maneuver Control System Design for a Flexible Vehicle

A large flexible vehicle with tank using reaction jet attitude control system(ACS) design is a very complex and important problem.In order to suppress the flexible vibration,a kind of closed feedback with the shaping input signal is designed,selecting the hyperbolic tangent as smooth function,and studying and comparing to the Bang-Bang control system which can excite the vibration.In order to use a reaction thruster,the pulse width modulated(PWM) designing method is adopted for reaction jet pulse modulated which is easy to realize in engineering.The attitude maneuver smooth control can be realized and the vibration and sloshing modes can be suppressed for flexible dynamic vehicle with tank,using integrated dead zone theory designing the modulator pulse width.According to math simulation,using the shaping input method and reasonable pulse width modulated logic,the flexible vibration can be suppressed efficiently during the large flexible vehicle attitude maneuver control.