数字型液压变压器动态特性研究

doi:10.3969/j.issn.1004-132X.2021.03.005开放科学（资源服务）标识码（OSID）：

摘要/Abstract

摘要： 数字型液压变压器（DHT）将多个二进制排量比的泵/马达流量单元组合在一起同步转动，通过高速开关阀组状态数字的控制，实现不同的变压比。介绍了DHT的结构原理，通过理论推导和数学建模，对DHT的动态特性进行了仿真分析，并制造了样机，通过实验进行了验证。DHT响应快，变压范围大，可以作为液压恒压网络系统中的二次调节元件驱动直线负载，还可以回收负载端的压力能，对提高液压系统效率具有重要意义。

关键词: 液压变压器, 数字液压, 建模与仿真, 动态特性

Abstract: The digital hydraulic transformer(DHT) combined several pump/motor flow units with binary displacement ratio to rotate synchronously, and realized different transformation ratio through the control of high-speed on-off valve group status. The structure and principle of DHT were introduced. The dynamic characteristics of DHT were simulated and analyzed through theoretical derivation and mathematical modeling. The prototype was manufactured and the dynamic characteristics were verified by experiments. DHT has a fast response and a wide range of pressure changes, and may be used as a secondary regulating element in the hydraulic constant pressure network systems to drive the linear loads, and may also recover the pressure energy at the load ends, which is of great significance to improve the efficiency of the hydraulic systems.

Key words: hydraulic transformer, digital hydraulic, modeling and simulation, dynamic characteristic

中图分类号:

TG156

刘涛1,2;韩炎1,2;孙仁福1,2;赵丁选1,2. 数字型液压变压器动态特性研究[J]. 中国机械工程, DOI: 10.3969/j.issn.1004-132X.2021.03.005开放科学（资源服务）标识码（OSID）：.

LIU Tao1,2;HAN Yan1,2;SUN Renfu1,2;ZHAO Dingxuan1,2 . Study on Dynamic Characteristics of Digital Hydraulic Transformers[J]. China Mechanical Engineering, DOI: 10.3969/j.issn.1004-132X.2021.03.005开放科学（资源服务）标识码（OSID）：.

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链接本文: http://www.cmemo.org.cn/CN/10.3969/j.issn.1004-132X.2021.03.005开放科学（资源服务）标识码（OSID）：

http://www.cmemo.org.cn/CN/Y2021/V32/I03/284

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