Numerical simulation and experiments on electromechanical coupling characteristics of pile hammer synchronous vibration system

In order to solve the problem of electromechanical coupling that influencing the control effect in the control of two vibration hammers,the influence law of electromechanical coupling is studied.The dynamics equations of the hammer-pile-soil system and electromechanical coupling mathematical model of two pile hammers synchronous vibration system are established,and then the simulation model is built with Matlab/Simulink.Base on the simulation model,some research of the numerical computation is done about the key parameters(motor speed difference,initial phase difference,soil parameters,the installation location and distance,etc.) respectively,which may affect the synchronization of the system.Simulation results shows that self-synchronization phenomena will appear in the pile hammer synchronous vibration system in some conditions,and the basic law is obtained.In the end,the mathematical models and simulation results were proved to be correct by experiments.The research results provide theoretical foundation for the synchronization control strategy of the pile hammer synchronous vibration system.