Development of bending gap measurement and position control technique for unmanned slab crane

The development of unmanned crane is an important issue of factory automation (FA) in steel industry. In slab yard, various kind of slabs(different ingredients, temperature, length, width and thickness and so on) are piled together. When hot slabs were piled and get cold gradually, deformation such...

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Bibliographic Details
Published inSICE Annual Conference 2007 pp. 2440 - 2444
Main Authors Woojong Yu, Youngsoo Kim, Sehoon Kim, Daehyun Ji, Dowan Kim, Jooman Kim, Sangchul Won
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2007
Subjects
Cranes
deformation of slab
fusion sensor
Manufacturing automation
Metals industry
Position control
Position measurement
Slabs
Temperature
Thermal expansion
Transportation
unmanned crane
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Summary:The development of unmanned crane is an important issue of factory automation (FA) in steel industry. In slab yard, various kind of slabs(different ingredients, temperature, length, width and thickness and so on) are piled together. When hot slabs were piled and get cold gradually, deformation such as bending of slabs is occurred due to the thermal expansion and contraction. It may make slab to be bend and make gaps between slabs. Basically, gripping position control of unmanned slab crane is entirely depends on thickness information of target slabs in data base. The bending of piled slabs makes a difference of total task height between database and real one. It can cause unstable slab gripping and can cause a falling of slabs during the transportation. To resolve this problem, we developed a new gap measuring system which is equipped on the tip of crane and control system to make the crane grip stably. In this paper, a new gap measuring and grip position control system for slab crane and experimental results are described.
DOI:10.1109/SICE.2007.4421398