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Decoupling Principle Analysis and Development of a Parallel Three-Dimensional Force Sensor.

Yanzhi Zhao1,2, Leihao Jiao3,4, Dacheng Weng5,6

  • 1Key Laboratory of Parallel Robot and Mechatronic System of Hebei Province, Yanshan University, Qinhuangdao 066004, China. yzzhao@ysu.edu.cn.

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|September 21, 2016
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Summary
This summary is machine-generated.

This study introduces a novel parallel three-dimensional force sensor designed to minimize dimension coupling. The new sensor design achieves high measurement accuracy, improving performance for multi-dimensional force sensing applications.

Keywords:
calibration experimentmechanical decouplingparallel structurethree-dimensional force sensor

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Area of Science:

  • Mechanical Engineering
  • Sensor Technology
  • Metrology

Background:

  • Dimension coupling significantly limits the accuracy of multi-dimensional force sensors.
  • Existing parallel multi-dimensional force sensors face challenges with measurement accuracy due to inherent coupling effects.
  • Reducing friction-induced coupling is crucial for enhancing sensor performance.

Purpose of the Study:

  • To propose a novel parallel three-dimensional force sensor utilizing mechanical decoupling principles.
  • To effectively mitigate the impact of dimension coupling on sensor accuracy.
  • To reduce the influence of friction on dimension coupling by converting sliding to rolling friction.

Main Methods:

  • Mathematical and structural modeling of the parallel three-dimensional force sensor.
  • Analysis of mechanical decoupling principles and calculation of coupling degree (ε).
  • Prototype development, Finite Element Method (FEM) analysis, and experimental calibration.

Main Results:

  • The designed sensor structure demonstrates good decoupling performance, with a calculated coupling degree (ε) indicating effectiveness.
  • Experimental calibration achieved a measurement accuracy of less than 2.86%.
  • Coupling accuracy was determined to be less than 3.02%.

Conclusions:

  • The developed parallel three-dimensional force sensor exhibits high measurement accuracy and effective decoupling.
  • The mechanical decoupling approach successfully addresses the limitations of dimension coupling in force sensing.
  • This research provides a foundation for advanced applications of parallel multi-dimensional force sensors.