考虑模型参数不确定性的航天器姿态机动控制

发布时间：2018-04-15 13:11

本文选题：航天器 + 姿态机动　；参考：《电机与控制学报》2016年09期

【摘要】：针对具有参数不确定航天器大角度姿态机动的非线性控制问题,提出一种分散保性能控制律。研究刚性航天器大角度机动中航天器姿态控制问题时,忽略挠性模态对其的影响。在对具有参数不确定航天器进行建模的前提下,对模型的性质进行了描述。利用反馈线性化方法将航天器姿态动力学模型变换成三个部分进行分散控制器的综合,设计保性能控制律对航天器模型中参数不确定性进行抑制。由于引入保性能控制律,在补偿参数不确定性的同时还能够满足系统性能指标的要求。仿真实验结果表明,所设计的控制律能保证航天器在不确定性的影响下,精确完成大角度姿态机动,验证了方法的有效性。
[Abstract]:A decentralized guaranteed cost control law is proposed for nonlinear control of large angle attitude maneuver of spacecraft with uncertain parameters.In the study of attitude control of rigid spacecraft in large angle maneuvering, the effect of flexible mode on attitude control is ignored.On the premise of modeling the spacecraft with uncertain parameters, the properties of the model are described.The attitude dynamics model of spacecraft is transformed into three parts by feedback linearization method to synthesize the decentralized controller. The guaranteed cost control law is designed to suppress the uncertainty of parameters in the spacecraft model.Due to the introduction of guaranteed cost control law, it can compensate the uncertainty of parameters and meet the requirement of system performance index.The simulation results show that the proposed control law can guarantee the spacecraft maneuvering at large angle under the influence of uncertainty, and the effectiveness of the method is verified.
【作者单位】：哈尔滨理工大学电气与电子工程学院;上海航天技术研究院;哈尔滨工业大学航天学院;
【基金】：中国空间技术研究院(航天五院)CAST基金资助项目
【分类号】：V448.2

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