2D阀控单出杆激振缸低频特性研究  

Research on Low-frequency Characteristics of One-pole Vibration Cylinder Controlled by 2D Valve

作　　者：李伟荣[1] 阮健[1] 任燕[1] 白继平[1] 

机构地区：[1]浙江工业大学机械制造及自动化教育部重点实验室,杭州310032

出　　处：《中国机械工程》2014年第1期97-102,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50675204);浙江省自然科学基金资助重大项目(D1080667)

摘　　要：针对传统电液激振器振动频率难以提高的现状,提出了一种基于差动连接的2D阀控单出杆液压缸的新型电液激振器。阐述了激振器的工作原理,建立了数学模型并进行了仿真分析,设计了电液激振器并进行了实验研究。理论和实验结果表明:振动频率在5Hz以下工作时,激振器输出的振动波形容易出现饱和现象;随着频率的提高,饱和现象就不容易出现。激振器输出力的大小与2D阀的轴向开口成正比关系,轴向开口越大,输出的力越大。The traditional electro--hydraulic exciters were very difficult to enhance the vibration frequency, so a new electro--hydraulic exciter based on single--rod hydraulic cylinder controlled by 2D valve was proposed. The scheme of electro--hydraulic exciter was described firstly, then the mathematical model was established and simulation analysis was executed. Finally, the electro--hy- draulic exciter was designed and the experimental research was performed. The theoretical and experi- mental results show the output waveform of exciter is prone to saturation under 5Hz; with improve- ment of agitating frequency, the saturation phenomenon is uneasy to appear. The output force of ex- citer is proportional to the axial opening of 2D valve, the greater the axial opening of 2D valve, the bigger the output force of exciter.

关 键 词：2D阀 单出杆液压缸 电液激振器 低频特性 

分 类 号：TH137[机械工程—机械制造及自动化]