Global fast terminal integral sliding mode control based on magnetic field measurement for magnetic levitation system. Issue 5 (14th September 2021)

• Record Type: Journal Article
• Authors: Li, Guidan; Ren, Zongqin; Li, Bin; Fu, Tongling; Duan, Peihua
• Is Part Of: Asian journal of control. Volume 24:Issue 5(2022)
• Page Start: 2363
• Page End: 2377
• Publication Date: 2021-09-14
• Subjects: flux linkage model -- global fast terminal integral sliding mode -- magnetic levitation system -- position model; Automatic control -- Periodicals; Control theory -- Periodicals; 629.805
• DOI: 10.1002/asjc.2660
• Languages: English
• ISSNs: 1561-8625

Abstract

Abstract: Magnetic levitation systems are widely applied in many fields. In this paper, a global fast terminal integral sliding mode controller (GFTISMC) based on the second‐order flux linkage model is proposed to improve the response speed and steady‐state error of the maglev system. Firstly, the dynamic model of the maglev system is deduced, and the second‐order flux state model is established. Secondly, to improve the global response speed of the system and reduce the steady‐state error, a GFTISMC is constructed. A position model based on magnetic field measurement is determined to achieve closed‐loop control. Finally, compared with the traditional sliding mode control, the simulation and experimental results show that the proposed controller has better global response speed, stronger robustness, and smaller steady‐state error.