Abstract
The floating raft active vibration isolation system itself is a complex system with high nonlinearity, strong coupling, and multi-source excitations, so it is difficult to build a mathematical mode...
Highlights
Since naval vessels are important defense force, it is necessary to improve their stealth performance to enhance the combat capability
EP Darbyshire and CJ Kerry[1] added 32 three-way electromagnetic actuators and more than 500 sensors on a floating raft active vibration isolation system to collect the information about displacements, accelerations, and magnetic flux, which are processed by the high-performance signal processor DSP to solve the operation efficiency problem for large floating raft active control system and reduce vibration and noise to School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan, P.R
Conventional fuzzy controller and fuzzy controller based on genetic algorithm (GA) are used to perform the numerical simulation and experiments for the floating raft active vibration isolation system
Summary
Since naval vessels are important defense force, it is necessary to improve their stealth performance to enhance the combat capability. The mathematical model of the floating raft active vibration isolation system is gained by system identification method, and the dual-input single-output Mamdani-type fuzzy controllers are designed. The least-square method in frequency domain is adopted to establish discrete transfer function mathematical model for the floating raft active vibration isolation system, choosing the ARX (AutoRegressiveeXogenous) as fitting model of the controlled object’s discrete transfer function. The poles of the four discrete transfer function models are within the unit circle, and this proves the stability of the model
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