Optimizing power consumption and position control in an electro-hydraulic system with cylinder bypass and NN-MPC

Omar Hesham Khedr; Mohammed Ibrahim Awad; Affaf Khamis Al-Oufy; Shady A Maged

doi:10.1038/s41598-024-51318-x

Optimizing power consumption and position control in an electro-hydraulic system with cylinder bypass and NN-MPC

Sci Rep. 2024 Jan 23;14(1):1993. doi: 10.1038/s41598-024-51318-x.

Authors

Omar Hesham Khedr^{1

2}, Mohammed Ibrahim Awad³, Affaf Khamis Al-Oufy^{4

5}, Shady A Maged³

Affiliations

¹ Mechatronics Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt. 2002595@eng.asu.edu.eg.
² Mechanical Engineering Department, Faculty of Engineering, Galala University, Suez, Egypt. 2002595@eng.asu.edu.eg.
³ Mechatronics Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt.
⁴ Mechanical Engineering Department, Faculty of Engineering, Galala University, Suez, Egypt.
⁵ Textile Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt.

Abstract

This study introduces an innovative approach to enhance the energy efficiency and position control performance of electro-hydraulic systems, employing a comprehensive comparative analysis. It presents and evaluates three control techniques: Proportional-Integral-Derivative (PID) control, Model Predictive Control (MPC), and Neural Network Model Predictive Control (NN-MPC). These methods are systematically assessed across varying load conditions. Notably, our research unequivocally establishes the exceptional performance of the NN-MPC approach, even when confronted with load variations. Furthermore, the study conducts an exhaustive examination of energy consumption by comparing a conventional system, where a flow control valve is not utilized as a hydraulic cylinder bypass, with a proposed system that employs a fully open Flow Control Valve (FCV). The results underscore the remarkable energy savings achieved, reaching up to 9% at high load levels.