{"title":"Investigation of a Quasi-Integral Sliding Mode Control for a nonlinear Maglev experimental system","authors":"Hamna Malik , Sarvat M. Ahmad","doi":"10.1016/j.jmmm.2025.173301","DOIUrl":null,"url":null,"abstract":"<div><div>This paper investigates a robust control technique for a magnetic levitation (Maglev) system designed for practical use, addressing common failures of payload-specific systems that operate only under ideal lab conditions. A payload-agnostic maglev system is developed to handle external perturbations and noise. A high-fidelity non-linear electromechanical-coupled model of a ferromagnetic beam and electromagnets is developed by empirically determining key model parameters. Due to the intrinsic instability and nonlinearity of maglev systems, high sampling frequencies are necessary for effective stabilization, making complex controllers impractical. A Quasi-Integral Sliding Mode Controller (QISMC) is proposed, balancing simplicity and robustness while addressing chattering and steady-state error issues typical of conventional Sliding Mode Controllers (SMC). The QISMC’s performance is compared to a linear PIDN controller, which, despite its effectiveness in limited ranges, underperforms in dynamic environments whereas the QISMC excels. The control algorithms are implemented on a dedicated embedded system using Simulink Desktop Real-Time software, and experimental results confirm the simulations’ accuracy, showing strong consistency between theoretical predictions and real-world performance.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173301"},"PeriodicalIF":2.5000,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetism and Magnetic Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304885325005335","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This paper investigates a robust control technique for a magnetic levitation (Maglev) system designed for practical use, addressing common failures of payload-specific systems that operate only under ideal lab conditions. A payload-agnostic maglev system is developed to handle external perturbations and noise. A high-fidelity non-linear electromechanical-coupled model of a ferromagnetic beam and electromagnets is developed by empirically determining key model parameters. Due to the intrinsic instability and nonlinearity of maglev systems, high sampling frequencies are necessary for effective stabilization, making complex controllers impractical. A Quasi-Integral Sliding Mode Controller (QISMC) is proposed, balancing simplicity and robustness while addressing chattering and steady-state error issues typical of conventional Sliding Mode Controllers (SMC). The QISMC’s performance is compared to a linear PIDN controller, which, despite its effectiveness in limited ranges, underperforms in dynamic environments whereas the QISMC excels. The control algorithms are implemented on a dedicated embedded system using Simulink Desktop Real-Time software, and experimental results confirm the simulations’ accuracy, showing strong consistency between theoretical predictions and real-world performance.
期刊介绍:
The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public.
Main Categories:
Full-length articles:
Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged.
In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications.
The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications.
The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism.
Review articles:
Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.