基于SMDO-TLC的高超声速飞行器姿态控制

邵星灵; 王宏伦

doi:10.13700/j.bh.1001-5965.2013.0731

基于SMDO-TLC的高超声速飞行器姿态控制

doi: 10.13700/j.bh.1001-5965.2013.0731

北京航空航天大学飞行器控制一体化技术重点实验室, 北京 100191

基金项目: 国家自然科学基金资助项目(61175084);长江学者和创新团队发展计划资助项目(IRT13004);航空科学基金资助项目

详细信息

作者简介:
邵星灵(1988-),男,江苏扬州人,博士生,huanying3557913@sina.com.

中图分类号: V249.1
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出版历程
- 收稿日期: 2014-01-07
- 网络出版日期: 2014-11-20

Attitude control for hypersonic vehicle based on SMDO-TLC

Science and Technology on Aircraft Control Laboratory, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对高超声速飞行器快时变、强耦合以及存在参数不确定和外部干扰情况下的姿态控制问题,同时考虑到执行机构动态和输入受限,提出了基于滑模干扰观测器-轨迹线性化(SMDO-TLC,Sliding-Mode Disturbance Observer-Trajectory Linearization Control)的高超声速姿态控制方法.首先,引入二阶线性微分器(SOLD,Second-Order Linear Differentiator)的概念,通过理论分析指出了当前TLC中采用一阶惯性+伪微分器求取输入指令的微分信号时会存在与SOLD类似的峰值现象,随后利用韩式跟踪微分器求取姿态标称指令及其微分信号,可有效解决过渡过程中执行机构饱和问题;接着,分别在姿态和角速率回路设计二阶滑模干扰观测器,利用符号函数积分来重构内外回路的复合干扰,在此基础上设计补偿控制律,以实现姿态控制器设计.仿真结果表明,所提出的方法能够克服时变干扰及气动参数大范围摄动的影响,同时兼具良好的动态特性与静态品质,能够满足高超声速飞行器的快时变、高精度以及强鲁棒的控制需求.
- 高超声速飞行器 /
- 轨迹线性化(TLC) /
- 非线性跟踪-微分器(TD) /
- 执行机构饱和 /
- 二阶滑模干扰观测器(SOSMDO)
Abstract: In consideration of actuator input constraints, a novel attitude control method driven by sliding-mode disturbance observer was presented for supersonic vehicle which is fast time-varying, strong coupling combining with parameter non-deterministic. Firstly, via introducing the concept of second-order linear differentiator (SOLD), it was indicated that peaking phenomenon caused by a combination of first-order lag and pseudo differentiator, which is similar with SOLD, would emerge during the transient profile of differentiation of the nominal command in the existing trajectory linearization control (TLC). Nonlinear tracking differentiator (TD) was used to produce the nominal command and its derivative, saturation of actuator during transition time was solved. Secondly, second order sliding-mode disturbance observer (SOSMDO) based on integration of sign function was designed to reconstruct compound disturbances in the loops of attitude and angular rate respectively, and then compensation control law was proposed to realize attitude control. Simulation results show that the technique proposed can overcome the impact of large-scale perturbations of interference and aerodynamics parameters, meanwhile good dynamic character and steady quality was achieved, the hypersonic vehicle control demand of fast time-varying, high precision and strong robustness can be satisfied.
- hypersonic vehicle /
- trajectory linearization control (TLC) /
- nonlinear tracking differentiator /
- saturation for actuators /
- second order sliding-mode disturbance observer (SOSMDO)

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