Fractional order sliding mode guidance law based on robust exact differentiator

被引：0
|
作者：
Lu H. [1 ,2 ]
Zheng W. [1 ]
Chang X. [2 ]
机构：
[1] College of Aerospace Science and Engineering, National University of Defense Technology, Changsha
[2] Beijing Institute of Space System Engineering, Beijing
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2023年 / 45卷 / 01期
关键词：
differentiator; finite time; fractional calculus; guidance law; sliding mode control;
D O I：
10.12305/j.issn.1001-506X.2023.01.21
中图分类号：
学科分类号：
摘要：
A fractional order terminal sliding mode guidance law with finite time convergence is proposed for maneuvering target interception with impact angle constraint. Firstly, the relative motion model of missile and target in two-dimensional plane is established. Secondly, the fractional order sliding surface and fractional order reaching law are selected respectively to design the fractional order terminal sliding mode guidance law, and the finite time stability of the guidance system is proved. At the same time, for the target maneuvering information acquisition, a target maneuvering acceleration estimation method based on robust precise differentiator is proposed to compensate the guidance law. Finally, the simulation results are compared with relevant guidance laws, the simulation results show that the proposed fractional order terminal sliding mode guidance law has a higher guidance accuracy and can effectively suppress sliding mode chattering. © 2023 Chinese Institute of Electronics. All rights reserved.
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页码：175 / 183
页数：8
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