Won Jee Chung

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Recently, interests on cleaning robots workable in pipes (termed as in-pipe cleaning robot) are increasing because Garbage Automatic Collection Facilities (i.e, GACF) are widely being installed in Seoul metropolitan area of Korea. So far research on in-pipe robot has been focused on inspection rather than cleaning. In GACF, when garbage is moving, we have(More)
In order to improve efficiency/productivity and thus facilitate work at industry sites, hydraulic system uses hydraulic fluid and has higher power density than other power transfer systems. A swash plate type variable piston pump among hydraulic equipment is the most important and basic component composing the hydraulic system, which plays a role of(More)
Among the automation systems, hydraulic system which uses hydraulic fluid and conveys power, has a high density of power and facilitates a close control of load motion using a hydraulic actuator. Also, this hydraulic system has a quick response characteristic due to incompressibility. The swash plate type and bent axis type piston pumps which convert a(More)