{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T20:45:33Z","timestamp":1777927533081,"version":"3.51.4"},"reference-count":42,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2024,1,16]],"date-time":"2024-01-16T00:00:00Z","timestamp":1705363200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"Foundation of National Key Laboratory of Science and Technology on Test Physics & Numerical Mathematics","award":["KT-KTYWGL-22-22228"],"award-info":[{"award-number":["KT-KTYWGL-22-22228"]}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering"],"published-print":{"date-parts":[[2024,5]]},"abstract":"<jats:p>This article proposes a fixed-time fuzzy disturbance observer\u2013based adaptive integral sliding-mode spacecraft control scheme with consideration of input uncertainties and unknown nonlinearities. First, for the purpose of satisfying the time-varying output constraints and simplifying the computational process, an error transformation function is employed to convert the constrained spacecraft system into an unconstrained one. Second, to ensure superior transient-state performance, an improved sliding manifold integrated with a nonlinear function is designed. Then, for accurately estimating the external disturbances, a fixed-time fuzzy disturbance observer is proposed. Furthermore, the unknown nonlinearities and the input uncertainties are handled by several adaptive laws. The simulation results are presented to verify the superiority and effectiveness of the proposed fixed-time fuzzy disturbance observer\u2013based adaptive integral sliding-mode control scheme.<\/jats:p>","DOI":"10.1177\/09596518231214284","type":"journal-article","created":{"date-parts":[[2024,1,17]],"date-time":"2024-01-17T02:14:40Z","timestamp":1705457680000},"page":"779-790","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Fixed-time fuzzy disturbance observer\u2013based adaptive integral sliding-mode spacecraft attitude control under time-varying output constraints"],"prefix":"10.1177","volume":"238","author":[{"given":"Yuan","family":"Zhu","sequence":"first","affiliation":[{"name":"School of Astronautics, Northwestern Polytechnical University, Xi\u2019an, China"},{"name":"National Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, Xi\u2019an, 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