Studying On Bridge Crane Operation System Unstable State Electromechanical Coupling Dynamic Simulating

In development of national economy,the electromechanical coupling driving force system holds important position , deals with the industry , agriculture ,science and technology fields . The electromechanical is a system ,containing much physics process , transfering energy by many factors and dimensions moves ,from decline to charge variable information to adjust itself and controlling on its host process, whose Mechanics problem is comparatively complicated , it deals with much discipline basic theory , including Mechanics (refer to general Mechanics , continuity mechanics Mechanics, Theory of Vibration) and electricity science(electromagnetic field theory , circuit theory , electric motor theory) and their inter-disciplines taking form.。Most rotator system in project is driving by the AC dynamo . the electromechanical coupling is that the features of rotator system show in unstable process such as starting , braking ,loads pound and self exciting oscillating. Building the electromechanical coupling mathematic model and making use of the model quantifying the change lows for every system's parametric in unstable process, have important value to systematic parameter of rotator designing and the malfunction diagnose。Therefore, studing unstable process of rotator system by the electromechanica coupled, has very important practical and immediate significance.The paper mainly simulates and analyses the electromechanical coupling of bridge cranes run organization in the unstable process. The electromechanical coupling characteristic of bridge crane running organization in the braking and the frequency conversion speed regulation is very obvious , these characteristics have effect to analysing malfunction and extending life for the running organization .The paper ,synthesizely thinking the cascade compensates capacitance , machinery rotator system vibrates , machinery rotator and electric motor rotator revolution motion and the effect of turning back relatively , as classics electric motor theory and machinery rotator system basis, has built the synthetical crane running organization rotator system electromechanical coupling mathematic model. Apply the simulated software of MATLAB/Simulink to change mathematic model into the simulated mode to simulate on the computer and qualitative research this electromechanical coupling system in unstable process .Final, contrasting the experiment designed to simulated mode, the paper has testified the electromechanical coupling model applying to a bridge crane run organization . This model has some value to design the bridge crane running organization and diagnose malfunction.