Study on Improved Fuzzy Immune PID Controller for Maglev Transportation System with Track Irregularity

Abstract:

Track irregularity is one of the most important aspects of the suspension control performance impact in maglev transportation system (MTS). Due to the track irregularity phenomenon of suspension system, the Fuzzy PID(F-PID) control is unable to accurately track irregularity of track changes. Based on the qualitative analysis to MTS, through modifying conventional F-PID controller, the article establishes Fuzzy Immune PID(FI-PID) Controller based on the biological immune system theory. The control strategy designed nonlinear P controller, using the immune algorithm of on-line adjustment of P and the fuzzy control approximating the nonlinear function of the immune P control parameters and the fuzzy control designed the ID controller for adjusting the parameters of I and D for enhancing the robust performance of the suspension system and adapting to the change of track irregularity. Simulation results show that the FI-PID control is confirmed more effectively to realize tracking compared with F-PID, faster response speed, more simple structure, easier operation for the track interference and load disturbance of the suspension system. This provides a very good way to solve the interference problem of orbit of the maglev transportation system.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 2825-2831
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.2825
• Online since: September 2013
• Authors: Rong Rong Song, Wei Hua Ma, Zi Li Chen
• Keywords: Fuzzy Immune PID Control, Fuzzy PID Control, Maglev Transportation System, MATLAB Simulation, Track Irregularity

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