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论文:2017,Vol:35,Issue(4):578-585 |
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引用本文： |
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王佩, 张科, 吕梅柏, 葛致磊, 王靖宇. 基于微分估计和弹性辨识的火箭姿态控制器设计[J]. 西北工业大学学报 |
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Wang Pei, Zhang Ke, Ge Zhilei, LÜ Meibo, Wang Jingyu. Launch Vehicle Attitude Controller DesignBased on Differential Estimation and Elastic Identification[J]. Northwestern polytechnical university |
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| 基于微分估计和弹性辨识的火箭姿态控制器设计 |
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| 王佩1,2, 张科1,2, 吕梅柏1,2, 葛致磊1,2, 王靖宇1,2 |
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1. 西北工业大学 航天学院, 陕西 西安 710072;
2. 航天飞行动力学国家级重点实验室, 陕西 西安 710072 |
| 摘要: |
| 针对捆绑运载火箭姿态运动中由结构参数变化、内外干扰和弹性频率摄动引起的姿态控制问题，基于动态补偿线性化和系统辨识的思想，设计了一种基于微分估计和弹性频率辨识的运载火箭姿态控制器。该控制器由刚体姿态控制器和自适应弹性滤波器两部分组成。首先，通过微分器利用姿态测量信息估计因参数变化、运动耦合和内、外干扰引起的不确定项用于动态补偿，结合分数阶PDμ控制实现对火箭刚体姿态运动的控制。其次，根据箭体刚体运动与弹性振动在频率特性上的差异，利用控制输入和姿态输出采样信号辨识姿态传递函数参数，计算弹性振动频率，据此动态调整陷波滤波器中心频率，实现对弹性振动的自适应抑制。最后，通过仿真验证了上述设计的可行性，结果表明所设计的控制器具有较强的抗干扰性和鲁棒性，能够实现对一阶弹性振动的动态抑制，具有一定的工程参考价值。 |
| 关键词:
运载火箭
姿态控制
微分器
分数阶
弹性频率辨识
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| Launch Vehicle Attitude Controller DesignBased on Differential Estimation and Elastic Identification |
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| Wang Pei1,2, Zhang Ke1,2, Ge Zhilei1,2, LÜ Meibo1,2, Wang Jingyu1,2 |
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1. School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. National Key Laboratory of Aerospace Flight Dynamics, Xi'an 710072, China |
| Abstract: |
| Strap-on launch vehicle attitude control is a complex nonlinear problem that is compounded by several factors such as aerodynamics modeling uncertainties, internal/external disturbance and elastic frequency perturbation. An attitude controller of strap-on launch vehicle based on dynamic compensation linearization theory and elastic frequency identification is presented. The controller contains a rigid body attitude controller and a adaptive elasticity filter. The rigid body attitude controller that augments differential compensator which is used to estimate and compensate impact of parametric uncertainties, movement coupling and disturbances by taking advantage of the information of gyros and attitude sensors, to a fractional-order PDμ controller is implemented. Considering the frequency difference between rigid body motion and elastic vibration, sample signals of controller and attitude sensor output are utilized to identify elastic frequency. The adaptive elasticity filter dynamically adjusts the center frequency of notch filter according to the identification result to suppress elastic vibration. Validation of the design is done by numerical simulation. Simulation results show that the controller exhibits better dynamic performance,stronger robustness and elasticity restrain ability. |
| Key words:
angle of attack
attitude control
controllers
launch vehicles
differentiator
fractional-order
elastic frequency identification
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| 收稿日期: 2017-02-28
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金（61374209）与航天支撑基金（2015-HT-XGD-02）资助 |
| 通讯作者:
Email： |
| 作者简介: 王佩(1983—),西北工业大学助理研究员,主要从事飞行器制导、控制与仿真研究。
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| 作者相关文章 |
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| 王佩 在本刊中的所有文章 |
| 张科 在本刊中的所有文章 |
| 吕梅柏 在本刊中的所有文章 |
| 葛致磊 在本刊中的所有文章 |
| 王靖宇 在本刊中的所有文章 |
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