Hardware design of 3-axis motion platform with load compensation mechanism

Jeong Woo Park, Hyo Gon Kim, Young Ho Choi, Sung Ho Park, Hyo Jun Lee

Research output: Contribution to journalArticlepeer-review


The motion platform supports the trainee in experiencing a sense of reality in virtual space by performing a motion on the available degrees of freedom for a motion that mimics a specific motion in connection with a virtual reality content or a simulator. The required specification of the motor and driver of motion platform is determined by the target specification for the upward motion of the motion plate. The reason is that the weight of the upper plate always applies gravity in the direction of the downward motion. As a result, the downward motion has an excessive specification compared to the upward motion specification, resulting in an unbalanced motion specification. Additionally, a problem may occur in which a volume increases from the application of a high specification driving unit. In this paper, the motion platform was designed capable of three-axis motion in roll, pitch, and gravity directions using a compression spring to apply a load compensation mechanism. Based on the design results, the specifications of the compression spring for motion platform to satisfy the operating specifications do not excessively move the upward and downward direction derived by the analysis.

Original languageEnglish
Pages (from-to)451-455
Number of pages5
JournalJournal of the Korean Society for Precision Engineering
Issue number6
Publication statusPublished - 2020 Jun
Externally publishedYes


  • Load compensation
  • Motion platform
  • Parallel robot
  • Spring

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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