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Bucket Actuator Pressure Control by Independent Metering Valve for Excavator
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 Title & Authors
Bucket Actuator Pressure Control by Independent Metering Valve for Excavator
Yang, Joo-Ho; Jung, Tae-Rang;
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 Abstract
A cylinder control system of the conventional construction machine has been controlled by hydraulic spool valves. This system is low-cost but system efficiency is not high. Recently, to improve this, all valves are controlled electronically and independently. Bu and Yao suggested four way electronic hydraulic control valve system. It is called IMVT(Independent Metering Valve Technology). The purpose of the study is to find proper IMV pressure control method for excavator and to validate excavator`s bucket regeneration energy effect by controlling the IMV system. In this paper, we mathematically describe the bucket system of excavator first. And then, based on these results, we design the control system which is divided into two operations(none regeneration or regeneration).The results of the experiment show the desirable performance and usefulness of the designed control system.
 Keywords
Independent metering valve;Electronic controlled valve;Pressure control;Construction equipment;
 Language
Korean
 Cited by
 References
1.
T. R. Jung, G. H. Choi and J. H. Yang, 2015, "Bucket Actuator Pressure Control by Independent Metering Valve", Journal of the Korean Society for Power System Engineering, Spring conference, p. 74.

2.
T. R. Jung, G. H. Choi and J. H. Yang, 2015, "A study on bucket actuator pressure control by Independent Metering Valve and regeneration energy for Excavator", Journal of the Korean Society for Power System Engineering, Autumn conference, p. 80.

3.
F. Bu and B. Yao, 2001, "Integrated Direct/indirect adaptive robust motion control of single-rod hydraulic actuator with time-varying unknown inertia", in Proc. of IEEE/ASME Int Conf on Advance Intelligent Mechatronics, pp. 624-629.

4.
E. A. Frankenfield, 1993, "Developing trends in hydraulics tied to elec-tronic controls," Control Engineering, Vol. 40, No. 5, pp. 62-66.

5.
E. Kramer, 1990, "Electro hydraulic valve system." United States Patent (Re. 33,846).