Analysis for Dynamic Characteristics in Load-lifting system of the Crane

A dynamic model for load-lifting system of the crane was established in this paper, with which a high precision direct precise integration method was proposed for calculating the dynamic loads of the system. The dynamic characteristics of the general crane which used the traditional step speed regulation and advanced crane which used the variable frequency speed control technique were discussed. Calculating results show that the advanced have much smaller dynamic loads than the general in the same case. This method, with the advantages of high accuracy and taking less computing time, is simple and effective to analyze the dynamic characteristics of the crane system.