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Proceedings of the 2009 IEEE
International Conference on Robotics and Biomimetics
December 19 -23,2009,Guilin,China
The Development of a Position Conversion Controller for Hydraulic
Press Systems
Seong Jin Cho,Jae Chol Lee,Yong Han Jeon,and Jae Wook Jeon
the technological processes that require high mechanical
Abstract— Many industrial motion systems use electronic
motors.However,big power systems that make automobile
frames,roll blending machines and many other systems can’t
use electronic motors due the latter’s relatively small power.In
order to solve this problem,we propose using hydraulic systems.
The open-loop control method and the close-loop control
method are widely used to control hydraulic systems.Among
hydraulic systems,we focus on the control hydraulic press
system; particularly,the hydraulic press system that operates
with vertical movement and has big weight.In this case,if the
close-loop method is applied to the hydraulic press system,then
vibration and noise problems will occur due to the inertia of the
press system.
In this paper,we propose using the conversion controller
between the open-loop controller and the close-loop controller.
Also,we experiment with a variety of interpolation methods in
the close-loop controller in order to efficiently control the
hydraulic press system.
I.\x05INTRODUCTION
T\x05he industrial motion systems have been using the
electronic motors due to their convenience and ease of
control.Also,many studies have recently been carried out for
analyzing the electronic motors and developing many
controllers[1-3].Although,electronic motor systems have
been widely used in many industrial communities,other
systems that require more force use the hydraulic systems.
The hydraulic actuated systems are currently used in a wide
range of industrial applications,and they continue to be
popular and relatively inexpensive power sources.These
systems provide similar performance to that of electric
motors,including high durability,the ability to produce large
forces and relatively quick response times [4],as well as the
benefit of lowering costs.Hydraulic systems are essential to
This work was supported by the Power Instrument Company.
S.J.Cho.The author is with the School of Information and
Communication Engineering,Sungkyunkwan University,Suwon,Korea
(corresponding author to provide e-mail:liberty3@ ece.skku.ac.kr.)