期刊
ISA TRANSACTIONS
卷 125, 期 -, 页码 237-251出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2021.06.039
关键词
Extended state observer; Integral terminal sliding mode controller; Partial integrated guidance and control; Fixed -time stability
资金
- National Natural Science Foundation of China [61933014]
- Chinese Aero- nautical Establishment Aeronautical Science Foundation [201907048001, 20200001048001]
- Re- search Funds for the Engineering Research Center of Aircraft Autonomous Control Technology, Ministry of Education [NJ2020004]
This paper presents a novel fixed-time extended state observer based fixed-time integral terminal sliding mode controller for partial integrated guidance and control design. The paper proposes a class of arbitrary-order systems with fixed-time stability and designs an arbitrary-order fixed-time integral terminal sliding mode controller based on this system to avoid the singular problem. Additionally, a new fixed-time extended state observer is constructed to actively compensate for the disturbance caused by unknown target acceleration.
This paper studies a novel fixed-time extended state observer based fixed-time integral terminal sliding mode controller for partial integrated guidance and control design. Firstly, a class of arbitrary-order systems with fixed-time stability is proposed by utilizing homogeneous approach, whose upper bound of convergence time is given. Then, an arbitrary-order fixed-time integral terminal sliding mode control is designed based on the proposed arbitrary-order fixed-time stable system, which avoids the singular problem. Subsequently, this paper constructs a new fixed-time extended state observer to further actively compensate for the disturbance caused by unknown target acceleration. Finally, numerical simulations show the effectiveness of the proposed controller. (C) 2021 ISA. Published by Elsevier Ltd. All rights reserved.
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