What is it about?

This article focuses on enhancing energy efficiency and position control in the linear actuator of heavy earth moving equipment. Linear actuators play a crucial role in construction and mining, particularly in excavation equipment booms. The study compares two hydraulic circuits in terms of energy efficiency. One circuit utilizes a conventional proportional directional control valve (PDCV) for position control, while the other introduces an innovative approach using a proportional flow control valve (PFCV) that creates artificial leakage between the actuator ends. The PFCV bypasses the excess flow from the pump during position control, unlike the pressure relief valve in the PDCV circuit.

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Why is it important?

A study compares energy-saving position control methods: using a proportional directional control valve (PDCV) and flow control valve (FCV). Simulation in MATLAB/Simulink and experiments in LabVIEW show FCV achieves 8.54% higher efficiency than PDCV. Position control is achieved using a proportional directional valve and flow control valve with PID-fuzzy control. Valuable insights for engineers to develop energy-efficient, reliable actuators.


the comparison of the energy-saving position control method is carried out between the two-position control strategy by using a proportional directional control valve (PDCV) and flow control valve (FCV) shorted between the cylinder ends

Dr. Gyan Wrat
Aalborg Universitet

Read the Original

This page is a summary of: Energy saving and Fuzzy-PID position control of electro-hydraulic system by leakage compensation through proportional flow control valve, ISA Transactions, June 2020, Elsevier,
DOI: 10.1016/j.isatra.2020.01.003.
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