Robust linear parameter-varying control of air-breathing hypersonic vehicle considering input constraints

D. Ge, Xianlin Huang
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引用次数: 3

Abstract

For an air-breathing hypersonic vehicle model subject to input constraints, this paper is concerned with the application of linear control theory to design its flight control system. In the framework of integral quadratic constraints (IQCs), the standard linear parameter-varying (LPV) control method is generalized to deal with the parametric, dynamic uncertainties and saturation nonlinearities associated with the model. Based on open-loop analysis, an inner/outer loop structure is proposed to design the flight control system that is gain-scheduled over dynamic pressure and Mach number. The inner-loop consists of robust LPV controller and LPV anti-windup compensator to enhance attitude stability and overcome actuator saturation. The outer-loop is designed as a gain-scheduled proportional-integral (PI) controller to achieve precise trajectory tracking performance. The effectiveness of the control strategy is demonstrated on the full nonlinear model.
考虑输入约束的吸气式高超声速飞行器鲁棒线性变参数控制
针对具有输入约束的吸气式高超声速飞行器模型,研究了应用线性控制理论设计其飞行控制系统。在积分二次约束的框架下,将标准线性变参控制方法推广到与模型相关的参数不确定性、动态不确定性和饱和非线性。在开环分析的基础上,提出了一种内/外环结构来设计动态压力和马赫数增益调度的飞控系统。内回路由鲁棒LPV控制器和LPV抗卷绕补偿器组成,以提高姿态稳定性和克服执行器饱和。外环被设计为增益调度比例积分控制器,以实现精确的轨迹跟踪性能。在全非线性模型上验证了控制策略的有效性。
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