一种皮纳卫星MEMS固体微推力器阵列联合姿态控制的高精度方法

doi:10.13700/j.bh.1001-5965.2017.0481

北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (7): 1378-1386.doi: 10.13700/j.bh.1001-5965.2017.0481

一种皮纳卫星MEMS固体微推力器阵列联合姿态控制的高精度方法

杨博, 李嘉兴

北京航空航天大学宇航学院, 北京 100083

收稿日期:2017-07-14 出版日期:2018-07-20 发布日期:2018-07-25
通讯作者: 杨博.E-mail:yangbo@buaa.edu.cn E-mail:yangbo@buaa.edu.cn
作者简介:杨博女,博士,副教授。主要研究方向：航天器天文自主导航技术、深空探测自主导航与制导技术、可重复运载器GNC关键技术;李嘉兴男,硕士研究生。主要研究方向：航天器天文自主导航技术、小卫星编队小推力姿轨控制。

A high-precision attitude coordinated control method using MEMS thruster for pico- and nano-satellite

YANG Bo, LI Jiaxing

School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Received:2017-07-14 Online:2018-07-20 Published:2018-07-25

摘要/Abstract

摘要： 针对低成本皮纳卫星实现高精度姿态控制问题，提出了一种飞轮与MEMS固体微推力器（SPM）阵列双模式执行机构联合控制方法。采用全局快速终端滑模控制律解决皮纳卫星受扰机动快速稳定的问题，并通过了Lyapunov稳定性证明。推导出能量最优切换模型，即分为飞轮单独控制、飞轮与固体微推力器联合控制以及固体微推力器单独控制3个区间，达到了高稳定精度和固体微推力器最低消耗的双重效果。同时利用蒙特卡罗法方法搜索实际力矩与指令力矩最接近的固体微推力器分配矩阵，以合理安排固体微推力器的点火顺序，使其消耗最少。通过计算机仿真计算表明，提出的飞轮与MEMS固体微推力器阵列双模式执行机构联合控制方法可以使低成本的皮纳卫星完成高精度的控制任务，姿态角精度为0.045 7°，姿态角速率精度为0.006 2 （°）/s。

关键词: 皮纳卫星, 高精度, 姿态控制, 双执行机构, 联合控制, 固体微推力器(SPM)

Abstract: To achieve high precision attitude control for the pico- and nano-satellite at low cost, this paper presents a coordinated control method of double actuators using flywheel and solid propellant microthruster (SPM) array. The global fast terminal sliding mode controller is adopted to solve the rapid maneuvering of disturbed pico- and nano-satellite, which is verified by the Lyapunov stability. Meantime, the energy optimal switching strategy is derived, namely, the three sections of individual flywheel control, flywheel and SPM array coordinated control and individual SPM array control. In this way, the dual effects of high attitude stability precision and global minimum consumption of SPM array are realized. In this paper, the Monte Carlo method is used to optimize the allocation matrix in order to arrange the ignition sequence reasonably and minimize the consumption of the SPM array. The results of numerical simulation show that the coordinated control method of double actuators enables the pico- and nano-satellite complete high precision attitude control tasks at low cost,the attitude angle precision is 0.045 7°, and the attitude angular rate precision is 0.006 2 (°)/s.

Key words: pico- and nano-satellite, high precision, attitude control, double actuators, coordinated control, solid propellant microthruster (SPM)

中图分类号:

V448.22

杨博, 李嘉兴. 一种皮纳卫星MEMS固体微推力器阵列联合姿态控制的高精度方法[J]. 北京航空航天大学学报, 2018, 44(7): 1378-1386.

YANG Bo, LI Jiaxing. A high-precision attitude coordinated control method using MEMS thruster for pico- and nano-satellite[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2018, 44(7): 1378-1386.

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一种皮纳卫星MEMS固体微推力器阵列联合姿态控制的高精度方法

A high-precision attitude coordinated control method using MEMS thruster for pico- and nano-satellite

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