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An integrated design of quasi-zero stiffness mechanism

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Abstract

Nonlinear Quasi-zero stiffness (QZS) mechanisms were studied to overcome the weakness of linear isolators. This paper presents an integrated design of the QZS mechanism. First, various types of QZS vibration mechanisms are analyzed and a generalized model for QZS mechanisms is derived. The generalized model consists of two main parts: link and horizontal spring. The motion equation of the QZS mechanism is a Duffing equation with nonlinear stiffness. Based on the generalized model, the design problem of the QZS mechanism is converted into the kinematic design of a link element. For simplicity, the link is generalized with a cam-roller mechanism. The integrated design approach shows that the QZS mechanism can have desired QZS characteristics with properly designed cam geometry.

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Author information

Authors and Affiliations

  1. Dept. of Mechanical Engineering, Soongsil University, Seoul, 06978, Korea

    Hyeong-Joon Ahn

  2. School of Electrical Engineering, Soongsil University, Seoul, 06978, Korea

    Sung-Hun Lim

  3. School of Electronic Engineering, Soongsil University, Seoul, 06978, Korea

    Changkun Park

Authors
  1. Hyeong-Joon Ahn
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  2. Sung-Hun Lim
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  3. Changkun Park
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Corresponding author

Correspondence to Hyeong-Joon Ahn.

Additional information

Hyeong-Joon Ahn received his B.S., M.S. and Ph.D. degrees from Seoul National University, Korea in 1995, 1997 and 2001, respectively. Dr. Ahn is currently an associate professor at Dept. of Mechanical Engineering, Soongsil University. Dr. Ahn’s research interests are in the area of mechatronics, sensors, actuators, control, and precision machine design.

Sung-Hun Lim received his B.S., M.S. and Ph.D. degrees from Chonbuk National University, Korea in 1996, 1998 and 2003, respectively. Currently, he is an associate professor in the Dept. of Electrical Eng. at Soongsil Univ. Korea. Dr. Lim’s research interests are the protection relay of power systems, the superconducting fault current limiter and the power applications of superconductors.

Changkun Park received his B.S., M.S. and Ph.D. degrees in Electrical Eng. from Korea Advanced Institute of Science and Technology, Daejeon, Korea, in 2001, 2003 and 2007, respectively. In September of 2009, he joined the faculty of the School of Electronic Engineering, Soongsil Univ., Seoul, Korea. His research interests include RF and millimeter-wave circuits.

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Ahn, HJ., Lim, SH. & Park, C. An integrated design of quasi-zero stiffness mechanism. J Mech Sci Technol 30, 1071–1075 (2016). https://doi.org/10.1007/s12206-016-0210-x

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  • DOI: https://doi.org/10.1007/s12206-016-0210-x

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