Fig. 1 Unidirectional flow control valve
Fig. 2 HSRE(high side regeneration extension)
Fig. 3 2 stage proportional flow control valve
Fig. 4 PSV(Proportional Solenoid Valve)
Fig. 5 PSV control pressure characteristics
Fig. 6 Proportional flow control valve
Fig. 7 FCV χv characteristics with Q4 = kvf = 0
Fig. 8 FCV χv characteristics with kvf = 0
Fig. 9 FCV χv, Fq characteristics at dlorf = 3mm
Fig. 10 FCV characteristics at dlorf = 3, 4, 5mm
Fig. 11 Load flow characteristics at constant Fm
Table 1 Assumed PSV specificaitons
Table 2 Assumed flow control valve specifications
Table 3 FCV data with kvf = 0 at Fm = 1N
Table 4 FCV data with feedback spring at Fm = 1N
참고문헌
- Caterpillar, Catalog for 336F XE Hydraulic Excavator, 2016.
- H. G. Park, S. A. Nahian and K. K. Anh, "A Study On Energy Saving Of IMV Circuit Using Pressure Feedback", Journal of Drive and Control, Vol.13, No.4, pp.31-44, 2016. https://doi.org/10.7839/KSFC.2016.13.4.031
- J. Y. Huh, "Energy Saving in Boom Motion of Excavators using IMV", Journal of Drive and Control, Vol.14, No.3, pp.1-7, 2017. https://doi.org/10.7839/KSFC.2017.14.3.001
- J.-C. Lee et al., "Development of the Independent Metering Valve Control System and Analysis of its Performance for an Excavator", BATH/ASME 2016 Symposium on Fluid Power and Motion Control, Paper No. FPMC2016-1745, pp.V001T01A021, 2016.
- A. Shenouda, Quasi-Static Hydraulic Control Systems and Energy Savings Potential Using Independent Metering Four-Valve Assembly Configuration, PhD Dissertation, Georgia Institute of Technology, Georgia, 2006.
- A. Shenouda and Wayne Book, "Optimal Mode Switching for a Hydraulic Actuator Controlled With Four-Valve Independent Metering Configuration", International Journal of Fluid Power, Vol.9, No.1, pp.35-43, 2008. https://doi.org/10.1080/14399776.2008.10781295
- G. H. Jung, "Steady-state Analysis of Proportional Flow Control Valve with Large Capacity", 2009 KSFC Spring Conference Proceeding, pp.67-72, 2009.
- G. H. Jung, "Static Analysis of Dedicated Proportional Flow Control Valve for IMV", 2018 Spring Conference on Drive and Control, pp.115-122. 2018.
피인용 문헌
- Independent Metering Valve: A Review of Advances in Hydraulic Machinery vol.17, pp.4, 2018, https://doi.org/10.7839/ksfc.2020.17.4.054