In this contribution, we present a compliant constant force mechanism for guiding an object.

    A straight elastic beam with a constant cross-section is connected to the object on one side. Its other side is fixed at a distance p from the object on a frame, forming an angle α \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha $$\end{document} to the frame. The appropriate setting of the variables p and α \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha $$\end{document} is to find, which guarantees that the object is guided with a constant force. The model was set up using differential equations within the Euler-Bernoulli beam theory for large deformations. We solved the equations using a combination of the Runge-Kutta method and the shot method. The variables p and α \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha $$\end{document} were optimized using the Matlab patternsearch algorithm. The deviation from the force operating point in the optimized setting is less than 3% within a movement range of 15% of the beam length. The results were verified using the finite element method (FEM), with the error between the presented model and the FEM being less than 2%.

    The simplicity and cost-effectiveness of the presented compliant constant force mechanism make it applicable in various fields such as robotics, medical technology, and nanofabrication.


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    Title :

    Compliant Constant Force Guiding Mechanism


    Additional title:

    Mechan. Machine Science



    Conference:

    Conference on Microactuators and Micromechanisms ; 2024 ; Ho Chi Minh City, Vietnam November 09, 2024 - November 11, 2024



    Publication date :

    2025-03-08


    Size :

    10 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English