title: GSA-Tuning IPD Control of a Field-Sensed Magnetic Suspension System.
abstract: The purpose of this paper is to propose a GSA-tuning IPD control technique for magnetic suspension systems. An educational demonstration on a magnetic-field sensed magnetic suspension system is examined for effectiveness. For the magnetic-field sensed magnetic suspension system (FSMSS), the current transducer is employed for measuring the electromagnetic coil current, and a Hall effect device is used for detecting the position of the suspended object. To achieve optimal performance, the gravitational search algorithm (GSA) is adopted for tuning the integral-proportional-derivative (IPD) controller. The IPD control includes the specified PD controller and an integrator. The specified PD control is employed for stabilizing the inherently unstable FSMSS, whereas the integral control is utilized for eliminating the steady-state error. The GSA can tune the IPD control parameters to enable optimal FSMSS performance. We achieved excellent results from the simulations and hands-on experiments for the proposed control strategies and structures.
authors.affiliation: Department of Electrical Engineering, Kun Shan University, 195 Kunda Road, Yongkang District, Tainan City 710, Taiwan. ljh0906@mail.ksu.edu.tw.
authors.forename: Jen-Hsing
authors.initials: JH
authors.lastname: Li
authors.affiliation: Department of Electrical Engineering, Southern Taiwan University of Science and Technology, 1 Nan Ti Street, Yongkang District, Tainan City 710, Taiwan. jschiou@stust.edu.tw.
authors.forename: Juing-Shian
authors.initials: JS
authors.lastname: Chiou
keywords: IPD control; current transducer; gravitational search algorithm; magnetic field sensor; magnetic suspension system