隨著全球經(jīng)濟的飛速發(fā)展和工程機械全球保有量的持續(xù)上升,工程機械的節(jié)能問題變得越來越突出。液壓系統(tǒng)是工程機械的關(guān)鍵子系統(tǒng),因此提高其能源利用率是當(dāng)前實現(xiàn)工程機械節(jié)能的重要手段之一。而在傳統(tǒng)的閥控或泵控液壓系統(tǒng)中,由于受閥件和液壓泵的固有特性制約,系統(tǒng)可控性和節(jié)能性通常無法得到兼顧。泵閥協(xié)控系統(tǒng)將泵控系統(tǒng)的節(jié)能特性與閥控系統(tǒng)的高精度和高頻率響應(yīng)相結(jié)合,使其成為當(dāng)前電液系統(tǒng)的一個研究熱點。本文總結(jié)了泵閥協(xié)控電液系統(tǒng)節(jié)能技術(shù)的最新研究進展,并重點分析了不同類型工程機械的液壓系統(tǒng)結(jié)構(gòu)、電動液壓系統(tǒng)的控制方法、新型液壓混合能量再生系統(tǒng)以及關(guān)鍵部件。同時,從負載口獨立控制技術(shù)、共壓導(dǎo)軌技術(shù)（CPR）和混合動力源系統(tǒng)三個方面探討了泵閥協(xié)控系統(tǒng)的未來發(fā)展方向和面臨的挑戰(zhàn)。 

【文章來源】：Journal of Zhejiang University-Science A（Applied Physics & Engineering）. 2020,21(05)EISCICSCD

【文章頁數(shù)】：19 頁

【文章目錄】：
1 Introduction
2 Hydraulic systems in the construction machinery
3 Pump-valve coordinated control of con-struction machinery
    3.1 Excavator
    3.2 Loader
    3.3 Crane
    3.4 Forklift
4 Control methods for the electro-hydraulic system in construction machinery
    4.1 Proportion integral differential algorithm control
    4.2 Robust adaptive control
    4.3 SM variable structure control
    4.4 Backstepping control method
5 Novel HHSs and components
    5.1 Novel hybrid ERSs
    5.2 Novel structure of energy-saving components
6 Future research directions and challenges
    6.1 IMS with electro-hydraulic flow matching scheme
    6.2 Common pressure rail
    6.3 Hybrid power sources
7 Conclusions
Contributors
Conflict of interest


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