Adaptive control of multi-dimensional coupled vibration of ship propeller propulsion shaft system
The vibration of the propulsion shaft system can cause displacement,which affects the stability and reliability of the ship propeller propulsion shaft system.To address this issue,a multi-dimensional coupled vibration adaptive control method for the ship propeller propulsion shaft system is proposed.Taking the base vibration as the observation point,a feed-forward control method is used to control the longitudinal vibration of the shaft system.Design parallel electromagnetic actu-ators to suppress lateral vibrations in the propeller area caused by cyclic forces,blade frequency forces,and periodic disturb-ances caused by frequency force superposition.The longitudinal and transverse vibration control parameters are used as inputs for the fuzzy PID control algorithm.The controller will automatically adjust its control parameters based on these inputs and preset control rules to achieve the best control effect on multi-dimensional coupled vibration.The experimental results show that the longitudinal vibration suppression level of this method reaches over 15 dB,and the monthly displacement is reduced by 7 mm,indicating that this method can improve the stability and reliability of the propulsion shaft system working process.
Ship propellerspropulsion axis systemmultidimensional coupled vibrationadaptive controlelec-tromagnetic actuatorfuzzy PID control
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