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作 者:陈伟[1] 卢京潮[1] 刘志君[1] 章卫国[1]
机构地区:[1]西北工业大学自动化学院,陕西西安710072
出 处:《飞行力学》2014年第5期423-426,431,共5页Flight Dynamics
基 金:国家973计划基金资助(20126131890302);航空科学基金资助(20125853035)
摘 要:为了确保变体飞机在变体过程中的飞行稳定性,提出了一种基于指令滤波器的滚动时域优化(RHO)控制器设计方案。使用雅克比线性化方法对变体飞机非线性方程进行线性化得到线性化模型。将指令滤波器写成状态空间的形式,基于飞机、指令滤波器和积分跟踪误差的状态方程得到一个增广状态方程。通过对两个黎卡提微分方程进行反向积分得到控制器增益,在有限滚动时域内实时计算得到控制量。从控制系统仿真结果可以看出,航迹倾斜角和飞行速度都能够较好地跟踪指令信号,基本不受变体速率的影响,飞行控制系统满足实时性和鲁棒性的要求。In order to ensure the flight stability of morphing aircraft under the morphing state, a receding horizon optimal (RHO) controller based on the command filter is proposed. Nonlinear dynamic equations of the morphing aircraft are linearized by using Jacobian linearization approach, and a linearized model is obtained. The transfer functions of the command filters are converted into the state space form, the augmented equations of state is obtained based on the equations of state of the aircraft, the command filters and the integral tracking error. The controller gains are obtained by the reverse integral for two Riccati differential equations, the control values are calculated in real-time within a finite horizon. The simulation results of the control system show that the flight path angle and flight velocity can track the command signals regardless of morphing rate, and the flight control system satisfies the requirements of real-time and robustness.
关 键 词:变体飞机 线性化 滚动时域优化 指令滤波器 航迹倾斜角
分 类 号:V249.1[航空宇航科学与技术—飞行器设计]
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