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固体火箭冲压发动机流量可调燃气发生器控制算法
引用本文:周景亮,陈雄,柴金宝.固体火箭冲压发动机流量可调燃气发生器控制算法[J].航空动力学报,2020,35(5):1109-1120.
作者姓名:周景亮  陈雄  柴金宝
作者单位:南京理工大学机械工程学院,南京210094,南京理工大学机械工程学院,南京210094,中国航天科工集团有限公司湖北航天技术研究院总体设计所,武汉430040,南京理工大学机械工程学院,南京210094,南京理工大学机械工程学院,南京210094,南京理工大学机械工程学院,南京210094
基金项目:总装备部预先研究项目(404040301); 国家自然科学基金(51606098); 江苏省自然科学基金(BK20140772)
摘    要:固体火箭冲压发动机流量调节系统具有很强的时变性和非线性,在调节的初期存在流量负调现象,且推进剂不完全燃烧产生的颗粒容易附着于喉道,这些因素都将对调节性能产生消极影响。为处理上述问题,设计线性自抗扰控制器(LADRC)。仿真试验表明,所设计的LADRC对比于比例-积分-微分控制器(PID)具有更好的响应速度、精度、流量负调抑制能力以及抗干扰能力,在低压力和高压力两种工况下的响应时间均不超过1.5 s,超调量在1.5%以内;流量负调减小了3~4倍;对干扰的反应时间在0.4 s左右,干扰的偏离值仅为0.25 MPa,显著提高了燃气发生器的工作性能。

关 键 词:固体火箭冲压发动机  流量可调燃气发生器  线性自抗扰控制器(LADRC)  线性扩张状态观测器  跟踪微分器  流量负调
收稿时间:2019/11/17 0:00:00

Control algorithms for adjustable flow gas generator of ducted ramjet
ZHOU Jingliang,CHEN Xiong,CHAI Jinbao.Control algorithms for adjustable flow gas generator of ducted ramjet[J].Journal of Aerospace Power,2020,35(5):1109-1120.
Authors:ZHOU Jingliang  CHEN Xiong  CHAI Jinbao
Affiliation:School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;; General Design Institute of Hubei Aerospace Technology Academy, China Aerospace Science and Industry Corporation Limited,Wuhan 430040,China
Abstract:The gas generator system with adjustable flow of ducted ramjet has strong time-varying and non-linearity. Anti-regulation of gas flow exists in the initial stage of regulation. And the in the gas generator system with adjustable flow of ducted ramjet has strong time-varying and non-linearity attributes. Anti-regulation of gas flow exists in the initial stage of regulation. And the incomplete combustion of propellant is easily adhered to throat. These factors will have a negative impact on the regulation performance. In order to solve this problem, the linear active disturbance rejection controller (LADRC) was designed. Simulation results showed that: compared with the proportion-integration-differentiation (PID) controller, the LADRC had better response speed, accuracy, flow anti-regulation suppression ability and anti-interference ability. The response time under low and high pressure conditions was less than 1.5 s, the overshoot was less than 1.5%, and the flow anti-regulation was reduced by 3-4 times. The reaction time to interference was about 0.4 s, and the deviation value of interference was only 0.25 MPa, thus significantly improving the performance of gas generator.
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