| 引用本文: | 杨跃能,吴杰,郑伟.临近空间驻留飞艇模糊变结构姿态控制方法.[J].国防科技大学学报,2012,34(5):26-31.[点击复制] |
| YANG Yueneng,WU Jie,ZHENG Wei.Fuzzy variable structure attitude control for a near-space airship[J].Journal of National University of Defense Technology,2012,34(5):26-31[点击复制] |
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| 临近空间驻留飞艇模糊变结构姿态控制方法 |
| 杨跃能, 吴杰, 郑伟 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 针对临近空间驻留飞艇姿态运动的非线性、耦合和不确定等特点，提出了一种模糊变结构解耦控制方法。首先，推导了定点模式下飞艇的姿态运动方程，通过选取状态向量和控制向量，将其描述为非线性系统。然后，采用反馈线性化方法将非线性姿态控制系统输入输出解耦为三个通道的线性子系统；利用滑模变结构控制对参数摄动的不变性设计了定点姿态控制系统，并应用 Lyapunov理论证明了系统的全局稳定性；为提高控制性能，以变结构控制的滑模面及其变化率为模糊控制器的输入，以趋近律参数为模糊控制器的输出设计了模糊变结构控制器，通过模糊规则在线调整控制律参数。最后，对具有参数不确定的姿态控制系统进行了数值仿真，验证了控制方法的有效性和鲁棒性。 |
| 关键词: 姿态控制 变结构控制 模糊规则 飞艇 临近空间 |
| DOI： |
| 投稿日期：2011-10-18 |
| 基金项目:国家部委资助项目；湖南省优秀研究生创新资助项目（CX2011B005）；国防科技大学优秀研究生创新资助项目（B110105） |
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| Fuzzy variable structure attitude control for a near-space airship |
| YANG Yueneng, WU Jie, ZHENG Wei |
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(College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The near-space airship provides a unique and promising platform for telecommunication, broadcasting relays, surveillance, and scientific exploration. A key control technical challenge for a near-space airship is station keeping, the ability to remain fixed over a geo-location. A fuzzy variable structure control approach for an airship is proposed. First, problem formulation of an airship’s attitude control was derived. Second, the attitude control system was designed by using the variable structure control theory, and a fuzzy system was used to turn the control gains for better performance of eliminating chattering. Finally, simulation results demonstrate the effectiveness and robustness of the proposed control approach in the presence of parameter uncertainties. |
| Keywords: attitude control variable structure control fuzzy rule airship near-space |
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