嫦娥六号环月飞行双环容错姿态控制
A dual-loop fault tolerant attitude control for Chang'e-6 lunar orbit flight
张洪华 1关轶峰 1李骥 1于洁 2陈尧 2王志文 2张晓文 1张录晨 2李林峰 2孙国健 2王振华 2郭敏文 1李晓锋 2高锡珍1
作者信息
- 1. 北京控制工程研究所,北京 100190;空间智能控制技术国家级重点实验室,北京 100190
- 2. 北京控制工程研究所,北京 100190
- 折叠
摘要
嫦娥六号着陆器和上升器组合体(着上组合体)环月飞行阶段,利用安装于上升器的10N发动机(可形成力偶控制方式)和安装于着陆器的150N发动机进行姿态控制.根据发动机安装布局,当力偶控制方式下某10N发动机常关故障、其配对使用的10N发动机正常工作时,推进系统将产生与期望相反的控制力矩,导致姿态发散.为了保证在10N发动机故障情况下着上组合体姿态稳定,给出了双环容错姿态控制策略,包括10N发动机内环控制和150N发动机外环控制.数学仿真结果表明,着上组合体环月飞行阶段双环容错姿态控制下,10N发动机故障后,着上组合体姿态可以稳定在给定范围内.针对配置力偶姿控发动机和冗余发动机的探测器,采用双环容错姿态控制策略,可以有效应对力偶姿控发动机故障影响,保证探测器姿态稳定.
Abstract
During the lunar orbit flight phase of the Chang'e-6 lander and ascender module(LAM),the 10N thruster(could be used in a force-couple method)on the ascender and the 150N thruster on the lander are implemented for the attitude control.However,there exists some fault cases when one 10N thruster failed to fire and the other pair one could work well,the propulsion system could generate opposite control torque due to the installation of thrusters and the attitude could be instable accordingly.To ensure the attitude stability in the 10N thruster fault case,a dual-loop fault tolerant attitude control is proposed with a 10N thruster in the inner loop and a 150N thruster in the outer loop.Numerical simulations illustrate that the LAM attitude in the lunar orbit could still meet the requirements even in the case of the 10N thruster fault.Therefore,the proposed dual-loop attitude control,which implements coupled attitude control thrusters and redundant thrusters,could effectively manage the coupled thruster fault and ensure the stabitlity.
关键词
嫦娥六号/环月/发动机/容错/姿态控制/相平面Key words
Chang'e-6/lunar orbit/thruster/fault tolerant/attitude control/phase plane引用本文复制引用
基金项目
国家重点研发计划项目(2018YFA0703800)
空间智能控制技术重点实验室基金(ZDSYS-2018-04)
出版年
2024
国家科技期刊平台
NSTL
万方数据