现代防御技术 ›› 2020, Vol. 48 ›› Issue (1): 32-37.DOI: 10.3969/j.issn.1009-086x.2020.01.005

• 导航、制导与控制 • 上一篇    下一篇

应用PWPF调节器的空间飞行器姿态控制方法研究

田源1, 王俊波2, 宿敬亚2   

  1. 1.北京航天长征飞行器研究所,北京 100076;
    2.北京电子工程总体研究所,北京 100854
  • 收稿日期:2019-04-19 修回日期:2019-09-03 出版日期:2020-02-20 发布日期:2021-01-20
  • 作者简介:田源(1982-),男,辽宁锦州人。高工,博士,主要从事飞行器的导航、制导与控制技术研究。通信地址:100076 北京9200信箱76分箱4号 E-mail:tyalbert@163.com

Spacecraft Attitude Control Using Pulse-Width Pulse-Frequency Modulator

TIAN Yuan1, WANG Jun-bo2, XIU Jing-ya2   

  1. 1. Beijing Institute of Space Long March Vehicle,Beijing 100076,China;
    2. Beijing Institute of Electronic System Engineering,Beijing 100854,China
  • Received:2019-04-19 Revised:2019-09-03 Online:2020-02-20 Published:2021-01-20

摘要: 针对使用常值推力发动机作为执行机构的空间飞行器姿态控制问题,提出了一种姿态控制器的模块化设计方法。该方法将姿态控制器按照控制功能的不同划分为2个主要的子控制器:面向弹体的连续状态子控制器和面向发动机开关逻辑规划的PWPF调制器。应用PWPF调制技术将连续控制器的指令离散化为姿控发动机的开关控制指令,整个控制方法有8个控制参数需要设计。运用相平面方法对系统的相轨迹进行了分析,根据相轨迹的特点提出了控制参数的整定方法。该模块化控制器设计方法的优点在于简化了复杂非连续控制系统的设计过程,实现了连续控制设计与开关控制设计的有机结合。仿真结果表明,该控制方法可靠有效,具有一定的工程应用价值。

关键词: PWPF调节器, PID控制, 姿态控制, 相平面, 空间飞行器

Abstract: A modular design method is proposed for the spacecraft which employs constant thrust on-off jets as actuators. The attitude controller is divided into two sub-controllers based on their functions: a continuous controller for the spacecraft and a pulse-width pulse-frequency (PWPF) modulator for the on-off actuators. The on-off command for the jets is generated by the PWPF modulator which employs the command from the continuous controller as its input. There are eight parameters existing in the attitude controller to be designed. The phase plane method is utilized to analyze the attitude control system and a parameter tuning method is proposed based on the characteristics of the phase locus. This method has the advantage of simplifying the complex non-continuous control system design through combining the continuous controller and the PWPF modulator. Simulation results show that the attitude controller possesses the advantages, such as effectiveness, reliability and good perspective of engineering application.

Key words: pulse-width pulse-frequency(PWPF) modulator, proportion-integral-derivative(PID) controller, attitude control, phase plane, spacecraft

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