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论文:2016,Vol:34,Issue(5):798-804 |
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引用本文： |
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张科, 韩治国, 杨天社, 王靖宇. 微小卫星姿态控制系统鲁棒自适应故障估计[J]. 西北工业大学学报 |
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Zhang Ke, Han Zhiguo, Yang Tianshe, Wang Jingyu. Robust Adaptive Fault Estimation for Microsatellite Attitude Control Systems[J]. Northwestern polytechnical university |
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| 微小卫星姿态控制系统鲁棒自适应故障估计 |
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| 张科1, 韩治国1, 杨天社2, 王靖宇1 |
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1. 西北工业大学 航天学院, 陕西 西安 710072;
2. 中国西安卫星测控中心, 陕西 西安 710043 |
| 摘要: |
| 针对具有非结构不确定项的非线性系统中存在的执行器与传感器故障，采用一种基于描述系统的故障估计观测器设计方法。该方法具有期望的鲁棒性能指标，能够在系统存在不确定项干扰的情况下实现对突变故障与时变故障等故障类型的精确估计。根据Lyapunov稳定性理论推导了上述方法存在的充分条件，根据线性化算法把上述充分条件转变为准线性矩阵不等式，应用迭代优化算法求得该充分条件的可行解。最后，将该方法应用于微小卫星姿态控制系统中执行器与传感器故障估计，仿真结果证明了该方法的有效性。 |
| 关键词:
姿态控制
线性矩阵不等式
故障估计
Lyapunov函数
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| Robust Adaptive Fault Estimation for Microsatellite Attitude Control Systems |
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| Zhang Ke1, Han Zhiguo1, Yang Tianshe2, Wang Jingyu1 |
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1. School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. China Xi'an Satellite Control Center, Xi'an 710043, China |
| Abstract: |
| This paper using a fault estimation observer design method based on described system, which is subjected to actuator faults and sensor faults in nonlinear systems with unstructured uncertainties. The method has the desired robust performance index, and in the presence of uncertainties, it can achieve accurate reconstructions of abrupt faults and time-varying faults, etc. Sufficient conditions for the existence of the proposed observer have been derived based on Lyapunov stability theory, and then converted into quasi-convex Linear Matrix Inequalities(LMIs) by using the cone complementarily linearization (CCL) algorithm, consecutively using iterative algorithm to get the feasibility solutions. Finally, the performance of the fault estimation scheme derived here is evaluated extensively through applying this method into microsatellite attitude dynamics, which can effectively estimates the actuator faults and sensor faults. |
| Key words:
attitude control
linear matrix inequalities
Lyapunov function
fault estimation
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| 收稿日期: 2016-04-10
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金（61174204、61101191、61502391）及航天支撑基金（2015KC020121）资助 |
| 通讯作者:
Email： |
| 作者简介: 张科(1968-),西北工业大学教授、博士生导师,主要从事飞行器导航、制导与控制研究。
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参考文献: |
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