Designing and application of type-2 fuzzy PID control for overhead crane systems

Abstract

In this paper, a type-2 fuzzy PID controller is presented to improve position control and damp the oscillation of the load for overhead crane systems. As an extension of traditional fuzzy logic theory, type-2 fuzzy logic theory can effectively improve the control performance especially for internal and external disturbances systems. According to the dynamic and inherent under-actuated characteristics of the overhead crane system, a PID controller that incorporates the type-2 fuzzy logic theory is designed to adjust the parameters dynamically during the control process. By implementing the simulation experiment, the results show that the proposed type-2 fuzzy PID control has significantly improved the suppression of load swing and position control.