孙刚, 胡万强, 卫世乾.一种闭环液压能量再生系统研究[J].河南理工大学学报（自然科学版）,2021,40(3):120-126.

SUN G, HU W Q, WEI S Q.Study on a closed-loop hydraulic energy recovery system[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(3):120-126.

一种闭环液压能量再生系统研究

孙刚1, 胡万强1, 卫世乾2

1.许昌学院 电气与机械工程学院，河南 许昌 461000;2.许昌学院 学报编辑部，河南 许昌 461000

摘要:针对目前旋转负荷能量再生系统效率低、成本高等缺点，提出一种新型的液压能量再生系统。该再生系统以闭环静压传动系统为基础，主要由泵、泵/马达、蓄能器、方向控制阀等液压元件组成。系统启动时利用液压泵与蓄能器驱动泵/马达带动负载旋转，制动时负载动能转变为液压能并储存在蓄能器中，在不引起流体流动逆转的情况下实现能量回收。首先，对该系统进行了建模；其次，设计一种由上位控制器和主控制器组成的分层控制系统，针对系统模型的不稳定性与不精确性，把主控制器内的二级控制器设计成为一种自适应模糊滑模控制器；最后，对系统的能量利用率和系统能量回收潜力的影响进行分析。结果表明：本文方案在制动过程中对系统能量回收率可达66.4%，在启动时比其他方案节省能量最高可达35.5% ，证明了所设计方案的有效性和控制系统的科学性。

关键词:能量再生;闭环液压系统;分层控制系统;直接自适应模糊滑模控制;液压蓄能器

doi:10.16186/j.cnki.1673-9787.2020010024

基金项目:河南省科技攻关项目（182102210506）；河南省高等学校重点科研项目（19B460011 ）

收稿日期:2020/01/07

修回日期:2020/05/25

出版日期:2021/05/15

Study on a closed-loop hydraulic energy recovery system

SUN Gang1, HU Wanqiang1, WEI Shiqian2

1.School of Electrical & Mechanical Engineering， Xuchang University， Xuchang  461000 ， Henan， China;2.Editorial Department of Journal， Xuchang University，Xuchang  461000 ， Henan， China

Abstract:At present， the rotating load energy regeneration system have the disadvantages of low efficiency and high cost. Based on the closed-loop hydrostatic transmission system， a new type of hydraulic energy recovery system was proposed ， which was mainly composed of pump ， pump/motor， accumulator， directional control valve and other hydraulic components. The pump/motor was driven to make the load to rotate by the hydraulic pump and accumulator when driving， and the kinetic energy of the load was converted into hydraulic energy and stored in the accumulator when braking. The kinetic energy was recovered without the reversal of fluid flow. Firstly， the system was modeled. Secondly， a hierarchical control system composed of upper controller and main controller was designed. In view of the instability and inaccuracy of the system model， the secondary controller in the main controller was designed as an adaptive fuzzy sliding mode controller. Finally， the energy utilization rate of the system was analyzed， and its influence on the energy recovery potential was also analyzed. The results showed that the energy recovery rate of the system could reach 66.4% in the process of braking， and the energy saving rate could reach 35. 5% in the start-up compared with other schemes， which proved the effec tiveness of the designed scheme and the scientific of the control system.

Key words:energy recovery;closed-loop hydraulic system;hierarchal control system;directional adaptive fuzzy sliding mode control;hydraulic accumulator

一种闭环液压能量再生系统研究_孙刚.pdf