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Nonlinear relative position control of precise formation flying using polynomial eigenstructure assignment

机译:多项式本征结构分配的精确编队飞行非线性相对位置控制

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摘要

A nonlinear relative position control algorithm is designed for spacecraft precise formation flying. Taking into account the effect of J_2 gravitational perturbations and atmospheric drag, the relative motion dynamic equation of the formation flying is developed in a quasi-linear parameter-varying (QLPV) form without approximation. Base on this QLPV model, polynomial eigenstructure assignment (PEA) is applied to design the controller. The resulting PEA controller is a function of system state and parameters, and produces a closed-loop system with invariant performance over a wide range of conditions. Numerical simulation results show that the performance can fulfill precise formation flying requirements.
机译:设计了一种非线性相对位置控制算法,用于航天器的精确编队飞行。考虑到J_2引力扰动和大气阻力的影响,地层飞行的相对运动动力学方程以近似线性的参数线性变化(QLPV)形式建立。基于此QLPV模型,应用多项式本征结构分配(PEA)来设计控制器。最终的PEA控制器是系统状态和参数的函数,并产生在各种条件下性能不变的闭环系统。数值模拟结果表明,该性能能够满足精确的编队飞行要求。

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