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Research on Displacement Transfer Characteristics of a New Vibration-Isolating Platform Based on Parallel Mechanism

机译：基于并联机构的新型隔振平台位移传递特性研究

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摘要

Based on the parallel mechanism theory, a new vibration-isolating platform is designed and its kinetic equation is deduced. Taylor expansion is used to approximately replace the elastic restoring force expression of vibration-isolating platform, and the error analysis is carried out. The dynamic-displacement equation of the vibration-isolating platform is studied by using the Duffing equation with only the nonlinear term. The dynamic characteristics of the vibration-isolating platform are studied, including amplitude-frequency response, jumping-up and jumping-down frequency, and displacement transfer rate under base excitation. The results show that the lower the excitation amplitude, the lower the initial vibration isolation frequency of the system. The influence of the platform damping ratio.. on displacement transfer rate is directly related to the jumping-down frequency Omega(d) and the external excitation frequency. The vibration-isolating platform is ideally suited for high-frequency and small-amplitude vibrations.
机译：基于并联机构理论，设计了新型隔振平台，推导了其动力学方程。用泰勒展开式近似代替隔振平台的弹性回复力表达式，并进行了误差分析。通过仅使用非线性项的Duffing方程，研究了隔振平台的动力位移方程。研究了隔振平台的动力特性，包括幅频响应，上，下跳频以及基础激励下的位移传递率。结果表明，激励幅度越低，系统的初始隔振频率越低。平台阻尼比对位移传递速率的影响与跳频频率Omega（d）和外部激励频率直接相关。隔振平台非常适合高频和小振幅振动。

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  • 来源
    《Mathematical Problems in Engineering》 |2017年第6期|8743868.1-8743868.8|共8页
  • 作者

    Shi Peicheng; Shi Peilei; Nie Gaofa; Tang Ye; Pan Daoyuan;

  • 作者单位

    Anhui Polytech Univ, Coll Mech & Automot Engn, 54 Beijing Middle Rd, Wuhu City, Peoples R China;

    Anhui Polytech Univ, Coll Mech & Automot Engn, 54 Beijing Middle Rd, Wuhu City, Peoples R China;

    Anhui Polytech Univ, Coll Mech & Automot Engn, 54 Beijing Middle Rd, Wuhu City, Peoples R China;

    Anhui Polytech Univ, Coll Mech & Automot Engn, 54 Beijing Middle Rd, Wuhu City, Peoples R China;

    Anhui Polytech Univ, Coll Mech & Automot Engn, 54 Beijing Middle Rd, Wuhu City, Peoples R China;

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