摘要
飞行器在线轨迹规划能够提高飞行器的自主飞行能力和机动灵活性,规划算法的实时性是其能否应用于工程的关键。为提高算法的效率,提出了一种基于导引参数寻优的在线轨迹规划方法。首先结合带终端约束的比例导引和减速控制,选取导引系数和速度控制参数为规划设计变量,将在线轨迹规划问题转化为一个非线性规划问题。然后采用拟牛顿法对转化得到的非线性规划问题进行求解。仿真结果表明:算法的收敛速度较快,能以较高的精度满足终端位置和速度约束,能够适应气动系数偏差等随机干扰,具有较高的工程应用价值。
Online trajectory planning can improve the autonomous flight capability and maneuverability of aircraft,and timeliness is the key to its application in engineering.In order to improve the efficiency of algorithm,an online trajectory planning method based on optimization of guidance parameter was developed in this paper.Firstly,proportional guidance and deceleration control were used to transform the online trajectory planning problem into a nonlinear programming problem,and guidance coefficient and speed control parameter were selected as design variables.Then the quasi-Newton method was used to solve the nonlinear programming problem.The simulation results show that the proposed method can converge fast and meet the constraints of terminal position and velocity with high accuracy.In addition,the method has good adaptability for random disturbances and high engineering application value.
作者
许宁
杜彦卫
胡锡精
XU Ning;DU Yan-wei;HU Xi-jing(Beijing Institute of Control & Electronic Technology,Beijing 100038,China)
出处
《计算机仿真》
北大核心
2019年第3期105-109,共5页
Computer Simulation
关键词
在线轨迹规划
导引参数寻优
拟牛顿法
Online trajectory planning
Optimization of guidance parameter
Quasi-Newton method
作者简介
许宁(1991-),男(汉族),河北省石家庄市人,硕士研究生,主要研究领域为导航制导与控制;杜彦卫(1977-),男(汉族),河北省石家庄市人,研究员,硕士研究生导师,主要研究领域为导航制导与控制;胡锡精(1982-),男(汉族),湖北省宜城市人,高级工程师,主要研究领域为导航制导与控制。
