首页> 中文期刊> 《电光与控制》 >基于航路点的高超声速飞行器预测校正制导律设计

基于航路点的高超声速飞行器预测校正制导律设计

         

摘要

To solve the problems of multi-restriction and uncertainty in reentry guidance of hypersonic vehicles,a predictor-corrector guidance method based on waypoint programming was established,integrating the advantages of the standard trajectory guidance and predictive-corrector guidance,and the accurate guidance model and guidance theory were derived .To eliminate the effect of model dynamic parameters,the numerical predictive arithmetic was improved,then a predictor-corrector guidance law based on optimal quadratic index was designed,and a numerical analytic solution was derived .With the attitude control loop considered as a second order system,a trajectory simulation was made between two waypoints .The result shows that this method has high precision and robustness,and is insensitive to the initial errors .%针对高超声速飞行器再入制导多约束、不确定性问题,结合预测-校正制导和标准航迹制导的优点,提出基于航路点规划的预测-校正制导方式,推导出精确的制导模型和制导原理。针对制导模型参数的动态性能,改进了数值预测算法,并基于二次型最优性能指标设计了预测-校正制导律,给出了制导指令数值方法的解析解,符合高超声速制导的实时性要求。将姿态控制回路近似描述成二阶系统,基于已规划航路进行了仿真验证,仿真结果表明,该方法对初始误差不敏感,具有较高的精度和较强的鲁棒性。

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