脉宽调制型液压变压器的设计与仿真

刘涛; 韩炎; 李浩; 赵丁选

doi:10.13433/j.cnki.1003-8728.20200472

脉宽调制型液压变压器的设计与仿真

doi: 10.13433/j.cnki.1003-8728.20200472

燕山大学机械工程学院，河北秦皇岛　066004

基金项目: 国家重点研发计划（2016YFC0802902）

详细信息

作者简介:
刘涛（1973−），副教授，博士，研究方向为新型液压元件和机电控制系统，liutao@ysu.edu.cn

中图分类号: TG156
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- 文章访问数: 87
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- PDF下载量: 10
- 被引次数: 0
出版历程
- 收稿日期: 2020-10-08
- 刊出日期: 2023-02-04

Design and Simulation of PWM Hydraulic Transformer

School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China

摘要

摘要: 设计了一种脉宽调制型液压变压器，其由泵/马达流量单元和控制阀组组成，通过控制A、B两侧高速开关阀脉宽信号的占空比实现变压功能。介绍了脉宽调制型液压变压器的工作原理，通过理论推导和数学建模验证了其原理的可行性，并利用AMESim仿真软件对脉宽调制型液压变压器的变压过程进行仿真分析。脉宽调制型液压变压器控制灵活，调压范围大，可作为恒压网络系统中的二次调节元件驱动直线负载，还可回收负载端的压力能，对提高液压系统效率具有重要意义。
- 液压变压器 /
- 脉宽调制 /
- 高速开关阀 /
- 恒压网络
Abstract: A pulse width modulation (PWM) type hydraulic transformer is designed in this study, which is composed of pump / motor flow measuring unit and control valve group. By controlling the duty ratio of pulse width signals of high-speed on-off valves on both sides of A and B, the pressure transformation function is realized. This paper introduces the working principle of PWM type hydraulic transformer, verifies the feasibility of its principle through theoretical derivation and mathematical modeling, and makes simulation analysis on the pressure transformation process of PWM type hydraulic transformer using AMESim simulation software. The PWM type hydraulic transformer has flexible control and wide range of pressure transformation. It may be used as a secondary regulating element in the hydraulic constant pressure network system to drive the linear load, and it may also recover the pressure energy at the load end, which is of great significance to improve the efficiency of the hydraulic system.
- hydraulic transformer /
- pulse width modulation /
- high-speed on-off valve /
- constant pressure network

HTML全文

图 1 脉宽调制型也液压变压器原理示意图

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图 2 脉宽调制型液压变压器的控制原理图

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图 3 高速开关阀结构示意图

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图 4 脉宽调制型液压变压器的仿真模型

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图 5 增压工况压力-时间图

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图 6 增压工况流量-时间图

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图 7 B侧压力图

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图 8 B侧流量图

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图 9 降压工况时B口压力-占空比图

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图 10 降压工况时B口流量-占空比图

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表 1 仿真参数设置

名称	设定值
恒压源压力	60 bar
泵/马达单元容积效率	90%
泵/马达单元转动惯量	0.01 kg·m²
高速开关阀最大流量下的压降	10 bar
高速开关阀允许通过的最大流量	5.6 L/min
蓄能器预充压力	30 bar

下载: 导出CSV

参考文献(16)

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