1-s2.0-S1877705811026294-main

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1-s2.0-S1877705811026294-mainInternational Workshop on Automobile， Power and Energy Engineering
Analysis for Dynamic Characteristics in Load-lifting system
of the Crane
Hanjun Pua
， Xiaopeng Xie
a
， Guangchi Liangb
， Xiangyong Yunb
， Haining Panb
a
School of Mechanical and Automotive Engineering， South China University of Technology， Guangzhou 510640， China
b
Shenzhen Institute of Special Equipment Inspection and Test，Shenzhen 518029， China
Abstract
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.
© 2010 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Society for
Automobile， Power and Energy Engineering
Keywords: dynamic load; crane; precise integration method; modeling
1. Introduction
Analysis of dynamic characteristics in lifting process for the crane is important. It is very helpful for
the safety design of the crane. The methods at present used for calculating the dynamic loads of a crane
when it carrying loads are not very convenient and accurate enough [1-3]. The precise time step
integration method proposed by Zhong [4] and improved by many researchers [5，6] can solve the
differential equation with a very high precision that almost reaching the full precision in computer， so it
was applied in the range of kinetic analysis and optimized control in engineering popularly， such as bridge，
Corresponding author. Tel.: 0-86-18998492503; fax: 0-000-000-0000 .
E-mail address: phjyzhl###163.com.