Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Independent Metering Valve: A Review of Advances in Hydraulic Machinery

  • Nguyen, Thanh Ha (Graduate School of Mechanical Engineering, University of Ulsan) ;
  • Do, Tri Cuong (Graduate School of Mechanical Engineering, University of Ulsan) ;
  • Ahn, Kyoung Kwan (School of Mechanical Engineering, University of Ulsan)
  • Received : 2020.11.06
  • Accepted : 2020.11.16
  • Published : 2020.12.01
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Abstract

In light of the environmental challenges, energy-saving strategies are currently under investigation in the construction industry. This paper focuses on the energy-saving method used in the hydraulic system based on independent metering (IM) technologies, which can overcome the lost energy at the main control valve of the conventional electrohydraulic servo system. By scientifically arranging the proportional valves, the IM system can individually control the flow rate of the inlet and the outlet ports of the actuators. In addition, the IMV system can be used to effectively regenerate energy under different operating modes, thereby saving more energy than conventional hydraulic systems. Therefore, the IMV system has a great potential to improve the energy efficiency of hydraulic machinery. The overall IMV system, including the configuration, proportional valve, operation mode, and the control strategy is introduced via state-of-the-art hydraulic technologies. Finally, the challenges of IM systems are discussed to provide researchers with directions for future development.

Keywords

Acknowledgement

This research was supported by Basic Science Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT, South Korea (NRF-2020R1A2B5B03001480).

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