输入受限高超声速飞行器鲁棒变增益控制  

Robust gain-scheduling control of hypersonic vehicle subject to input constraints

作　　者：黄显林[1] 葛东明[1] 

机构地区：[1]哈尔滨工业大学控制理论与制导技术研究中心,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2011年第8期1829-1836,共8页Systems Engineering and Electronics

基　　金：国家自然科学基金(60874084);国家自然科学基金重大研究计划培育项目(90916005)资助课题

摘　　要：针对一个输入受限吸气式高超声速飞行器模型,研究了其鲁棒变增益控制问题。为处理飞行器模型中的建模误差和饱和非线性,将标准的线性变参数(linear parameter-varying,LPV)控制问题扩展到对时变参数、动态不确定性和饱和非线性具有结构摄动的鲁棒性框架内。基于对模型不确定性和饱和非线性的积分二次型约束刻画,以定标线性矩阵不等式(linear matrix inequality,LMI)形式给出其鲁棒变增益控制算法。为进行变增益控制系统设计,建立了飞行器的LPV模型。基于多时间尺度特性,提出了一种由姿态回路和轨迹回路组成的内外环控制结构。内环实现对姿态的严格控制和克服执行机构饱和,外环实现对轨迹的精确跟踪。控制器增益随动压和马赫数调度,实现大跨度机动飞行控制。非线性仿真结果证实了算法和应用的有效性。For a model of an air-breathing hypersonic vehicle subject to input constraints,this paper is concerned with the robust gain-scheduling control.For dealing with the modeling error and saturation nonlinearities associated with the vehicle model,the standard control problem for linear parameter-varying（LPV） systems is extended into the robustness framework with structural perturbation of time-varying parametric,dynamic uncertainties and saturation nonlinearities.Based on the characterization of model uncertainties and saturation nonlinearities via integral quadratic constraints,the robust gain-scheduling control algorithm is presented in terms of scaled linear matrix inequalities（LMI）.In order to conduct a gain-scheduling control system design,an LPV model of the vehicle is developed.Based on the multi-time scale property,an inner/outer loop control structure consisting of attitude loop and trajectory loop is proposed.The inner-loop achieves tight attitude control and overcomes actuator saturation.The outer-loop achieves accurate trajectory tracking.The gains of the controllers are scheduled with dynamic pressure and Mach number to achieve large-span maneuver flight control.Nonlinear simulation results are presented to verify the algorithm and application.

关 键 词：高超声速 变增益 线性变参数 抗饱和 积分二次型约束 

分 类 号：V448[航空宇航科学与技术—飞行器设计]