| 一种针对冗余执行机构配置的修正直接分配算法(英文) |
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| 引用本文： | 唐生勇,张世杰,张育林.一种针对冗余执行机构配置的修正直接分配算法(英文)[J].中国航空学报,2011(3):299-308. |
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| 作者姓名： | 唐生勇 张世杰 张育林 |
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| 作者单位： | 哈尔滨工业大学卫星技术研究所;国防科技大学航天与材料工程学院; |
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| 基金项目： | National Natural Science Foundation of China (NSFC60704020); Changjiang Scholars and Innovative Research Team of China (PCSIRT0520); Research Fund for the Doctoral Program of Higher Education of China (20070213068) |
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| 摘 要： | 控制分配考虑期望控制量在冗余执行机构配置间的指令分配问题。本文基于执行机构的可达集提出一种修正直接分配新算法,重点解决该类算法的分配效率问题,并与修正伪逆再分配法、基于单纯形法求解的直接分配法线性规划模型以及次梯度优化算法进行对比分析。为减少原始直接分配法的离线计算时间,提出基于执行机构安装矩阵的零空间构建可达集信息,使离线计算时间在执行机构数目小于10时优于传统基于行空间的构建方法。在线计算中,提出基于单位可达集顶点信息寻找与期望控制量射线方向临近的可达集表面,从而缩小搜索范围、降低在线计算时间。仿真结果表明:修正算法不显著增加离线数据存储量,并将在执行机构数目小于10时至少降低32.22%的离线计算时间;在线计算中,其平均在线时间较对比算法均有大幅提高;在高度冗余控制分配问题中,修正算法将具有更大优势。
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| 关 键 词： | 控制分配 直接分配 伪逆再分配 线性规划 次梯度优化 可达集 |
A Modified Direct Allocation Algorithm with Application to Redundant Actuators |
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| TANG Shengyonga,ZHANG Shijiea,ZHANG Yulinb aResearch Center of Satellite Technology,Harbin Institute of Technology,Harbin ,China bCollege of Aerospace , Material Engineering,National University of Defense Technology,Changsha ,China.A Modified Direct Allocation Algorithm with Application to Redundant Actuators[J].Chinese Journal of Aeronautics,2011(3):299-308. |
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| Authors: | TANG Shengyonga ZHANG Shijiea ZHANG Yulinb aResearch Center of Satellite Technology Harbin Institute of Technology Harbin China bCollege of Aerospace Material Engineering National University of Defense Technology Changsha China |
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| Institution: | TANG Shengyonga,ZHANG Shijiea,ZHANG Yulinb aResearch Center of Satellite Technology,Harbin Institute of Technology,Harbin 150080,China bCollege of Aerospace and Material Engineering,National University of Defense Technology,Changsha 410073,China |
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| Abstract: | Control allocation considers the problem of controlling instruction distribution for control systems with multiple and redundant actuators.This paper focuses on the direct allocation method,making the time requirement of the algorithm analogous compared with modified pseudoinverse redistribution methods,linear programming methods solved by simplex method,and sub-gradient optimization method.To reduce off-line computations of constructing the attainable moment set of actuators,a new approach based on the nul... |
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| Keywords: | control allocation direct allocation pseudoinverse redistribution linear programming sub-gradient optimization attainable moment set |
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