Pre-compensated load sensing system based on speed sensitive variable pressure margin control

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2025-03-12 DOI:10.1016/j.energy.2025.135577

Yuanzheng Lin , Tianliang Lin , Shengjie Fu , Haoling Ren , Qihuai Chen , Heng Zhao , Jiarong Shi

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引用次数: 0

Abstract

The green transformation and electrification development of construction machinery have put forward higher performance requirements for load sensing systems. To address the problems of energy waste caused by the fixed pressure margin setting of existing load sensing systems and the inability to meet the flow demand of different working conditions, a pre-compensated load sensing system based on speed sensitive variable pressure margin control is proposed, and the control strategy for anti-flow saturation and speed sensitive variable pressure margin is formulated. Simulations are conducted in AMESim and a test rig is built for experimental studies. The research results indicate that: 1) the proposed system has good anti-flow saturation characteristics; 2) The proposed system can adjust the target pressure margin of the system to obtain variable flow gain according to the change of motor speed, which has better fine-tuning characteristics and flow control characteristics compared with the LUDV system; 3) Compared with the LUDV system, the proposed system reduces energy consumption by 5.0 % and 10.7 % respectively under medium and low speed conditions with a single actuator.

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.