考虑动压限制的高超声速飞行器控制系统设计 -- 西北工业大学学报,2019,37(1):41-47
论文:2019,Vol:37,Issue(1):41-47
引用本文:
许红羊, 凡永华, 仝希, 闫杰. 考虑动压限制的高超声速飞行器控制系统设计[J]. 西北工业大学学报
XU Hongyang, FAN Yonghua, TONG Xi, YAN Jie. Designing Control System of Hypersonic Vehicle with Dynamic Pressure Constraints Considered[J]. Northwestern polytechnical university

考虑动压限制的高超声速飞行器控制系统设计
许红羊, 凡永华, 仝希, 闫杰
西北工业大学 航天学院, 陕西 西安 710072
摘要:
针对高超声速飞行器超燃冲压发动机的进气道对飞行动压有比较苛刻的要求,提出一种直接进行动压反馈的高超声速飞行器控制系统设计方法。首先,建立了高超声速飞行器动压反馈控制的动力学模型,并推导了动压控制的状态方程。然后,利用线性二次型最优控制方法,通过引入动压误差进行控制对象增广,从而在动压控制回路中引入积分控制,以消除动压跟踪误差,给出了高超声速飞行器动压控制的控制系统结构。最后,通过仿真验证了动压控制器具有很好的跟踪性能,考虑存在气动、推力不确定性因素,飞行器速度出现偏差时,动压控制系统可以自适应地调整飞行高度以保证对动压指令的跟踪,控制系统具有很好的鲁棒性。
关键词:    高超声速飞行器    超燃冲压发动机    动压反馈    最优控制   
Designing Control System of Hypersonic Vehicle with Dynamic Pressure Constraints Considered
XU Hongyang, FAN Yonghua, TONG Xi, YAN Jie
School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
An airbreathing hypersonic vehicle(AHV) generally adopts a scramjet engine as its propulsion, which needs strict conditions of flight dynamic pressure. A new dynamic pressure control system is presented, in which the AHV autopilot directly uses dynamic pressure to track the dynamic pressure command. Firstly, the dynamic pressure model of the AHV is established and the state equations of dynamic pressure control are given. Then, the dynamic pressure control system is implemented using the LQR optimal control theory. The dynamic pressure error is augmented in order to add an integral control to track the dynamic pressure with zero steady error. The structure of the dynamic pressure control system is also obtained. The simulation results show that the dynamic pressure control system has a good performance for guaranteeing the dynamic pressure of the scramjet engine with the disturbance of drag and thrust considered.
Key words:    airbreathing hypersonic vehicle(AHV)    scramjet engine    dynamic pressure    optimal control   
收稿日期: 2018-03-01     修回日期:
DOI: 10.1051/jnwpu/20193710041
通讯作者:     Email:
作者简介: 许红羊(1991-),女,西北工业大学博士研究生,主要从事飞行器制导控制研究。
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