基于液压变压器-蓄能器变刚度弹性机构的液压激振方法

PDF(2188 KB)

振动与冲击 ›› 2015, Vol. 34 ›› Issue (23) : 182-193.

论文

吕云嵩

作者信息 +

Hydro-vibration method based on variable-stiffness elastic mechanism consisting of hydro-transformer and accumulator

Lv Yun-song

Author information +

文章历史 +

摘要

提出了一种新的激振方法，即用液压变压器与蓄能器、作动缸组成变刚度弹性机构，该机构连接振体构成液压振动回路。调节变压器的排量可以改变弹性机构的刚度，进而改变振动回路的固有频率和振动特性。由于这种方法不再依赖液压阀控制振动，所以能够避免节流损失。构建了激振回路数学模型，进行了仿真分析，表明该回路的固有频率可通过液压变压器在一定范围内任意调节。

Abstract

A new method about hydro-vibration is put forward. The hydro-vibration circuit is equipped with a variable-stiffness elastic mechanism that consists of a hydro-transformer, an accumulator and an actuator. The stiffness of the mechanism can be changed by regulating the displacement of the transformer, thereby changing the natural frequency and the vibration characteristics of the circuit. Owing to vibration isn’t controlled by hydro-valve, the throttle loss of energy can be avoided. Math-modeling and digital simulation of the system was done showing that natural frequency of the system can be adjusted in a wide bandwidth with modulating the displacement of the transformer.

导出引用

吕云嵩. 基于液压变压器-蓄能器变刚度弹性机构的液压激振方法[J]. 振动与冲击, 2015, 34(23): 182-193

Lv Yun-song . Hydro-vibration method based on variable-stiffness elastic mechanism consisting of hydro-transformer and accumulator[J]. Journal of Vibration and Shock, 2015, 34(23): 182-193

参考文献

[1] 邢彤，左强，杨永帅等.液压激振技术的研究进展[J].中国机械工程,2012,23(3):362-367,377.
Xing Tong, Zuo Qiang, YangYongshuai,et a1.Progresses of Research on Hydraulic Vibration Technology[J].China Mechanical Engineering,2012,23(3):362-367,377.
[2] Yang z D, Huang Q T, Han J w, et a1．Adaptive inversecontml of raIldom vibration based on the 6ltered.X LMS algorithm[J].Eanhquake Engineering and EngineeringVibration,2010,9:141-146.
[3] Tagawa Y, Kajiwara K. Controller development for the EDefenseshaking table[J].Proc. IMechE,Part I:Journal ofSystems and Control Engineering,2007,22:171—181.
[4] 栾强利，陈章位，贺惠农等.三级阀控液压振动台控制策略研究[J].振动与冲击,2014,(24):138-143.
LUAN Qiang-li, CHEN Zhang-wei, HE Hui-nong,et a1.Control strategy for a hydraulic shaker controlled with a 3-stage electro-hydraulic servo valve[J].Journal of Vibration and Shock,2014,(24):138-143.
[5] 李小彭，赵光辉，梁亚敏等.旋转阀式液压振动沉拔桩机实验系统特性分析[J].振动与冲击,2014,(21):90-95.
LI Xiao-peng, ZHAO Guang-hui, LIANG Ya-min, WEN Bang-chun.Dynamic,et a1.Characteristics of a test system for a hydraulic vibratory piling machine with a rotary valve[J].Journal of Vibration and Shock,2014,(21):
90-95.
[6] 邱法维，沙锋强，王刚等.地震模拟振动台控制技术及软件研究[J].液压与气动,2011,(6):98-101.
QIU Fa-wei, SHA Feng-qiang, WANG Gang, HUANG Xing-hong, ZHANG Hong-ji,et a1.Shaking table control technology and software research[J].CHINESE HYDRAULICS & PNEUMATICS,2011,(6):98-101.
[7] 阮健，李胜，裴翔等.2D阀控电液激振器[J].机械工程学报,2009,45(11):125-132.
RUAN Jian, LI Sheng, PEI Xiang, et a1. Electrohvdraulic Vibration Exciter Controlled by 2D Valve[J].JOURNAL OF MECHANICAL ENGINEERING,2009,45(11):125-
132.
[8] 徐兵，马吉恩，杨华勇.液压变压器瞬时流量特性分析[J] .机械工程学报,2007. 43(11):44-49
XU Bing, MA Jien, YANG Huayong,et a1.ANALYSIS OF INSTANTANEOUS FLOW RATE CHARACTER OF HYDRAULIC TRANSFORMER[J].JOURNAL OF MECHANICAL ENGINEERING,2007,43(11):44-49.
[9] 张树忠，邓斌，柯坚.基于液压变压器的挖掘机动臂势能再生系统[J].中国机械工程,2010.21(10):1161-1166
Zhang Shuzhong, Deng Bin, Ke Jian,et a1.Research on Energy Regeneration System of Hydraulic Excavator' s Boom Based on Hydraulic Transformer. [J].China Mechanical Engineering, 2010.21(10):1161-1166
[10] 李宪奎, 吴晓明, 方一鸣, 等.构造结晶器非正弦振动波形函数的方法[ J] .机械工程学报, 2000, 36(1):67 -70
Li Xiakui, Wu Xiaoming, Fang Yiming,et a1.
METHOD TO CONSTRUCT WAVINESS FUNCTION OF MOLD NON-INUSOI DAL OSCILLATION, [J].JOURNAL OF MECHANICAL ENGINEERING, 2000, 36(1):67 -70