Dynamic ball and plate control verification on magnetic suspension platform using enforced fuzzy logic control

Article type: Research Article

Authors: Lin, Chin E.^{a; *} | Huang, Wei Cheng^a

Affiliations: [a] Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan, China

Correspondence: [*] Corresponding author: Chin E. Lin, Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan, China. Tel.: +886 6 2741820; Fax: +886 6 2361835; E-mail: chinelin@mail.ncku.edu.tw

Abstract: This paper presents an enforced fuzzy logic control (EFLC) implementation on a ball and plate system (B&P) for dynamic control verifications. A two degree-of-freedom (DOF) platform is constructed for experiments using hybrid magnetic suspension (MS) actuators. The EFLC adds an enforcing rule to buffer the running ball to approach the target. It reduces the overshoot, shortens the settling time, and improves the overall performance significantly. The mathematical model of the ball and plate operation is derived through the Euler-Lagrange equation. Using a commercial touch panel as position sensor, a microprocessor controller is implemented on the proposed system to generated Pulse Width Modulation (PWM) control signals to activate the MS actuators. The tests verify the random position tracking and trajectory tracking performance on the MS B&P with different conditions. This proposed system could be applied to prevent turn over as an active device in transportation field.

Keywords: Ball and plate system, enforced fuzzy logic control, magnetic suspension actuator, sensor feedback

DOI: 10.3233/JAE-2012-1590

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 40, no. 4, pp. 259-281, 2012