Communications - Scientific Letters of the University of Zilina 2023, 25(2):B86-B94 | DOI: 10.26552/com.C.2023.025

Identification of Flexspline Parameters Affecting the Harmonic Drive Lost Motion Using the Global Sensitivity Analysis

Peter Weis ORCID...1, *, Lukáš Smetanka ORCID...1, Slavomír Hrček ORCID...1, František Brumerčík ORCID...1, Jakub Fiačan ORCID...1, Muhammad Irfan ORCID...2
1 Department of Design and Mechanical Elements, Faculty of Mechanical Engineering, University of Zilina, Zilina, Slovakia
2 Electrical Engineering Department, College of Engineering, Najran University, Najran, Kingdom of Saudi Arabia

The aim of this research was to find out the specific geometrical parameters of the harmonic drive with the greatest impact on its lost motion. Harmonic drive units are widely used in production automation, robotics and automated manufacturing systems. Virtual model of Harmonic Drive was examined using the finite element method. The analyses were performed with considering the real test conditions of high precision gearboxes with a lost motion value of 4 % of the nominal output torque. The analyses' results were then used to develop a unique approach to obtain a functional relationship between the input parameters defining the shape of the flexspline and the harmonic drive lost motion value. Subsequently, the global sensitivity analysis was performed to determine the degree of influence of the selected flexspline parameters on the harmonic drive kinematic accuracy.

Keywords: flexspline, torsional backlash, global sensitivity analysis, harmonic drive
Grants and funding:

This research was funded by Slovak Research and Development Agency, grant number APVV-18-0450 Research of the influence of design parameters of special transmissions with a high gear ratio with respect to kinematic properties.

Conflicts of interest:

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Received: November 8, 2022; Accepted: January 9, 2023; Prepublished online: February 2, 2023; Published: April 6, 2023  Show citation

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Weis, P., Smetanka, L., Hrček, S., Brumerčík, F., Fiačan, J., & Irfan, M. (2023). Identification of Flexspline Parameters Affecting the Harmonic Drive Lost Motion Using the Global Sensitivity Analysis. Communications - Scientific Letters of the University of Zilina25(2), B86-94. doi: 10.26552/com.C.2023.025
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