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基于有限时间切换控制方法,研究倾转旋翼机过渡模式,即短舱倾角从0?～90?变化过程中的飞行控制问题.根据过渡模式下的动力学特性,单一的系统模型已不能满足现代控制精度的要求,为此将其建模成用多模态刻化的切换系统.基于平均驻留时间方法,给出纵向运动飞行控制系统在有限时间内镇定的充分条件.仿真结果表明,所设计的切换控制律能够使得倾转旋翼机在过渡过程中有效快速地实现平稳转换.
Based on the finite time switching control method, the transient mode of tilting rotorcraft is studied, which is the flight control problem in the course of nacelle dip angle from 0 ° to 90 ° .According to the dynamic characteristics of transitional mode, the single system model can not meet the requirements of modern The control accuracy of which is modeled as a switching system with multi-modal incarnation.Based on the average dwell time method, the sufficient conditions for the stabilization of the longitudinal motion flight control system in a finite time are given.The simulation results show that The design of the switching control law enables the tiltrotor to achieve smooth transition effectively and quickly during the transition.