Semi-active control method, device and equipment for axle vibration and medium

Abstract

The invention relates to a semi-active control method, device and equipment for axle vibration and a medium, and belongs to the field of railroad bridges, the semi-active control method for axle vibration comprises the steps of constructing an axle equation added with control, and constructing a state equation considering vehicle axle load and an observation equation taking acceleration as an observation vector based on the axle equation; converting the state equation to determine the relationship between the control vector and the state vector, and determining optimal control based on preset initial optimal control and the relationship between the control vector and the state vector; and constructing an extended state equation and an extended observation equation based on the optimal control, the state equation and the observation equation, performing real-time prediction on the extended state equation and the extended observation equation by adopting Kalman filtering to obtain the optimal estimation of a state vector, and adjusting the mass, damping and rigidity of the axle system based on the optimal estimation of the state vector. Therefore, the instantaneous optimal semi-active control of the vibration response of the axle is realized, and the vibration control efficiency is improved.

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