起重机耦合感应电谐振频率的自动跟踪技术

Technology of Automatic Tracking for Crane High Frequency Induction Voltage

针对起重机耦合感应电现象及其危害,在建立电磁波环境下起重机的等效电路模型的基础上,分析了起重机高频感应电压的形成原理,阐述了数字式电流频率跟踪的原理及算法,提供了电流反馈式频率自动跟踪的系统结构,完善了起重机耦合感应电谐振频率自动跟踪方法,具有实际的工程应用价值。

According to the phenomena of crane coupling induction and it's hazards,on this basis of building equal circuit model,the causing reason of high frequency induction voltage and the limitation of normal power frequency grounding were analyzed in this paper.A method of current feedback is used for frequency tracking on the basis of maximal current.The control model working with digital appliance is set up.And the correspondence structure has been introduced in detail.It is of fairly engineering value in practical application.