旋转结构液压变频激振器设计及参数优化仿真分析  

Design and parameter optimization simulation analysis of hydraulic variable frequency shaker with rotating structure

作　　者：宋艳芳 汤东亚[3] 杨茵[4] SONG Yanfang;TANG Dongya;YANG Yin(School of Automotive Engineering,Tongji University,Shanghai 201800,CHN;School of Automotive Engineering,Henan Vocational and Technical College of Industry,Nanyang 473000,CHN;Industry and Education Integration Development Center,Henan Vocational and Technical College,Nanyang 473000,CHN;Luoyang Tractor Research Institute Co.,Ltd.,Nanyang 471000,CHN)

机构地区：[1]同济大学汽车学院,上海201800 [2]河南工业职业技术学院汽车工程学院,河南南阳473000 [3]河南工业职业技术学院产教融合发展中心,河南南阳473000 [4]洛阳拖拉机研究所有限公司,河南南阳471000

出　　处：《制造技术与机床》2022年第2期62-66,共5页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金(51675383)。

摘　　要：为了提高液压冲击器的冲击稳定性,设计了一种具有旋转结构的液压变频激振器,给出了回程和冲程运动控制方程,并运用Simulink平台开展参数优化仿真分析。研究结果表明:进入冲击行程阶段时,活塞依然保持加速运动状态,但加速度发生了逐渐降低。进入回程运动阶段时,活塞先发生加速度不断降低的加速运动过程,之后发生减速但加速度持续增大,实现活塞的加速回程运动。逐渐增大激振器频率后,系统发生了输出振幅量降低现象,形成了上移的振动中心。逐渐提高激振器频率后,系统达到了更大的输出加速度,表现出跟位移变化趋势相反的特点。当液压振动系统的平衡块量过小时,系统只能产生很小的激振力,随着平衡块量的提高,激振力也随之增大。In order to improve the impact stability of the hydraulic impactor,a hydraulic variable frequency shaker with rotating structure was designed,and the control equations of return and stroke motion were given,and the simulation analysis of parameter optimization was carried out by using Simulink platform.The results show that:the piston still keeps accelerating motion when entering the impact stroke stage,but the acceleration decreases gradually.When entering the return movement stage,the piston accelerates with decreasing acceleration first,and then decelerates with increasing acceleration,thus realizing the acceleration return movement of the piston.When the frequency of the shaker is gradually increased,the output amplitude of the system is reduced,and the vibration center is moved upward.When the frequency of the shaker is gradually increased,the system reaches a larger output acceleration,which is opposite to the trend of displacement.When the vibration mass of the hydraulic vibration system is too small,the system can only produce a small excitation force.With the increase of the vibration mass,the excitation force also increases.

关 键 词：液压激振器 仿真分析 冲击运动 参数优化 

分 类 号：TH137.5[机械工程—机械制造及自动化]