液阻全桥网络负载口独立电液系统节能控制策略仿真
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作者:
作者单位:

1.南昌大学 先进制造学院,南昌 330031;2.浙江大学 流体动力与机电系统国家重点实验室,杭州 230027

作者简介:

刘国平(1964—),男,教授,博士,主要从事智能机器人与视觉、机电智能控制系统研究,(E-mail) liuguoping@ncu.edu.cn。

通讯作者:

陆振宇,男,博士,(E-mail)luzhenyu@ncu.edu.cn。

中图分类号:

TH137

基金项目:

国家自然科学基金资助项目(52175050);国家优秀青年科学基金资助项目(51922093);浙江省教育厅科研资助项目(Y202148352)。


Simulation of energy-saving control strategy for independent metering electro-hydraulic system based on hydranlic-resistance full-bridge network
Author:
Affiliation:

1.Advanced Manufacturing School, Nanchang University, Nanchang 330031, P. R. China;2.State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou 230027, P. R. China

Fund Project:

Supported by National Natural Science Foundation of China (52175050), Outstanding Youth Science Foundation (51922093), and Scientific Research Fund of Zhejiang Provincial Education Department(Y202148352).

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    摘要:

    针对传统电液控制系统节流损失大、能耗高、效率低的问题,采用液阻全桥网络搭建了具有负载口独立控制特性的新型电液控制系统,详细研究了该系统在典型四象限负载下的节能控制策略。液阻全桥网络电液系统由5个二位二通比例阀组成,根据其具有的负载口独立控制特性,将系统归纳为传统三位四通、负载口独立和负载敏感3种控制模式。传统三位四通下,两负载口开度控制模拟三位四通进出口耦合形式;负载口独立模式下,采用一腔控制流量另一腔阀口全开的控制策略;负载敏感模式下,控制泵出口压力比进油腔压力高一个定值,从而实现负载敏感功能。在超越负载下,3种模式都使用流量再生回路进行节能控制。AMESim+Matlab联合仿真结果表明,与传统的三位四通模式相比,三位四通流量再生、负载口独立、负载口独立流量再生、负载敏感模式分别节能43.38%、65.27%、77.91%、83.58%。

    Abstract:

    To address issues such as high throttle loss, high energy consumption, and low efficiency in traditional electro-hydraulic control systems, a novel electro-hydraulic control system characterized by independent metering is introduced in this study. This system incorporates a full-bridge hydraulic resistance network, and its energy-saving control strategy is extensively investigated under typical four-quadrant load. Comprising five two-position two-way proportional valves, the hydraulic-resistance full-bridge electro-hydraulic system is categorized into three control modes: a traditional three-position four-way control mode, an independent metering control mode, and a load sensitive control mode. In the traditional mode, the opening control of the two load ports mimics three-position and four-way inlet and outlet coupling. In the independent metering mode, one cavity regulates the flow, while the other cavity controls the full opening of the valve port. The load-sensitive mode ensures a fixed pump outlet pressure higher than the intake cavity pressure, achieving load-sensitive functionality. Additionally, a flow regeneration circuit is used for energy-saving control across all three modes. Results of combined simulation using AMESim+MAT2 show that compared with the traditional three-position four-way valve mode, the three-position four-way flow regeneration mode, the independent metering flow regeneration mode, and the load sensitive mode can achieve energy savings of 43.38%, 65.27%, 77.91% and 83.58%, respectively.

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刘国平,熊剑峰,陆振宇,纵怀志,张军辉,曹塘茂,吴健鹏.液阻全桥网络负载口独立电液系统节能控制策略仿真[J].重庆大学学报,2024,47(5):13-23.

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  • 收稿日期:2022-04-29
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  • 在线发布日期: 2024-06-11
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