Multi-timescale fuzzy controller for a continuum with a moving oscillator

The design of a multi-time scale fuzzy controller using a singular perturbation approach that involves an elastic continuum carrying a moving mass-sprung-damper oscillator is presented. The proposed design of the controller involves a composite control strategy elucidated by the singular perturbation approach. A fuzzy logic compensator (FLC) is applied to the controller to solve the problem of the lack of full-state availability. Using this compensator, the vibration amplitude of an elastically supported continuum can be reduced and the performance of the dynamic system improved. A hierarchical fuzzy logic structure of a multi-input FLC is derived, leading to the implementation of faster controllers with a reduced memory demand. The considered problem of oscillation with moving loads, arises in civil, mechanical, transport, marine, offshore, aviation and aeronautical engineering.