基于自抗扰的运载火箭主动减载控制技术

doi:10.13700/j.bh.1001-5965.2015.0051

北京航空航天大学学报 ›› 2016, Vol. 42 ›› Issue (1): 130-138.doi: 10.13700/j.bh.1001-5965.2015.0051

基于自抗扰的运载火箭主动减载控制技术

杨伟奇^1,2, 许志^1,2, 唐硕^1,2, 张莹莹¹

1. 西北工业大学航天学院, 西安 710072;
2. 航天飞行动力学技术重点实验室, 西安 710072

收稿日期:2015-01-26 出版日期:2016-01-20 发布日期:2016-01-28
通讯作者: 唐硕,Tel.:029-88492788E-mail:Stang@nwpu.edu.cn E-mail:Stang@nwpu.edu.cn
作者简介:杨伟奇男,博士研究生。主要研究方向:飞行器设计。E-mail:yangweiqi@mail.nwpu.edu.cn;唐硕男,博士,教授,博士生导师。主要研究方向:飞行器设计。Tel.:029-88492788E-mail:Stang@nwpu.edu.cn
基金资助:
上海航天科技创新基金(SAST20121230)

Active disturbance rejection control method on load relief system for launch vehicles

YANG Weiqi^1,2, XU Zhi^1,2, TANG Shuo^1,2, ZHANG Yingying¹

1. School of Astronautics, Northwestern Polytechnical University, Xi'an 71007;
2. Science and Technology on Aerospace Flight Dynamics Laboratory, Xi'an 710072, China

Received:2015-01-26 Online:2016-01-20 Published:2016-01-28
Supported by:
Shanghai Foundation for Aerospace Science and Technology Innovation (SAST20121230)

摘要/Abstract

摘要： 针对运载火箭穿越大风区的减载控制技术进行研究,首先对攻角反馈和加表反馈2种减载技术进行理论研究和仿真分析,得出2种方案对火箭减载都存在一定的局限性。因此引入自抗扰控制器(ADRC)技术并针对飞行减载控制对其进行改进,一方面通过状态观测器将误差补偿引入自抗扰回路;另一方面改进了自抗扰控制器中的控制律,并推导证明了新的控制律下自抗扰控制器抑制风载干扰的能力,给出了控制方程中增益的选择方法。最后以某型液体运载火箭为例在考虑其弹性振动和液体晃动条件下对比了几种方案的减载效果,仿真结果表明改进后的自抗扰控制器使飞控系统抗干扰能力增强,增大了控制律中增益选择范围,有效提高了运载火箭的减载效果,具有很强的工程应用价值。

关键词: 运载火箭, 飞行风载, 反馈控制, 自抗扰控制器, 控制律

Abstract: Load relief control technology is studied for launch vehicles flying across the strong wind area. First, load relief controllers based on angle of attack feedback and accelerometer feedback were calculated, and limits of these methods were analyzed, thus an improved active disturbance rejection controller (ADRC) based on informed research was introduced into the flight control system. On the one hand, the error which was observed by status observation was introduced into the ADRC loop. On the other hand, by calculating the wind load impact on the control system, it improves the control law in ADRC and proves that aerodynamic load can be restrained by ADRC, and the method to select the gains in governing equation in the improved control law was given. At last, taking a liquid launch vehicle as an example and considering the elastic vibration and sloshing, load relief effect was analyzed with different methods. The simulation results show that after the improved ADRC method is introduced, the flight control system enhances the ability to reject disturbance, and expands the boundary when choosing a gains in the control law. With the disturbance compensation and proposed control law, the effect of the load relief system on the launch vehicle was greatly improved. This method has a great value in engineering application.

Key words: launch vehicle, wind load, feedback control, active disturbance rejection controller, control law

中图分类号:

V412.1

杨伟奇, 许志, 唐硕, 张莹莹. 基于自抗扰的运载火箭主动减载控制技术[J]. 北京航空航天大学学报, 2016, 42(1): 130-138.

YANG Weiqi, XU Zhi, TANG Shuo, ZHANG Yingying. Active disturbance rejection control method on load relief system for launch vehicles[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2016, 42(1): 130-138.

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基于自抗扰的运载火箭主动减载控制技术

Active disturbance rejection control method on load relief system for launch vehicles

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