Solid Rocket Booster Thrust Asynchrony Identification Method for Solid Rocket Bundled Rockets With ESO  

固体捆绑火箭采用ESO的助推器推力不同步辨识方法

作　　者：WU Kao ZHANG Chi CHEN Yan XU Guoguang BU Xiangwei 

机构地区：[1]Oriental Space Technology(Shandong)Co.,Ltd,Beijing 102600

出　　处：《Aerospace China》2024年第1期40-46,共7页中国航天（英文版）

摘　　要：The role of the rocket attitude control system is to execute the required maneuvers for guidance and ensure the stability of the rocket's flight attitude. Attitude control technology has always been one of the key technologies for ensuring the success of rocket flights and has been a core topic in carrier rocket technology research. The Gravity-1 solid carrier rocket is the first solid rocket bundled rocket developed by China, adopting a configuration with four boosters and a core stage bundled together. During the actual flight process, the four booster engines are ignited first, and then, in the event of insufficient control force from the boosters, the core stage engine is ignited to participate in control. To address thrust asynchrony during the descent of the four boosters, an Extended State Observer(ESO) is employed in the control scheme for this flight segment. This involves real-time estimation and compensation of attitude parameters during flight, identification of thrust asynchrony among the boosters, and simultaneous determination of whether the core stage engine is ignited to participate in control.Through six degrees of freedom simulation analysis and Y1 flight test validation, this method has been proven to be correct and feasible.

关 键 词：Extended State Observer(ESO) solid booster attitude control thrust asynchrony 

分 类 号：V475.1[航空宇航科学与技术—飞行器设计]