Design of a large stroke flexure-based suspension for an iron core torque motor

M. Naves*, M. Nijenhuis, W. B.J. Hakvoort, D. M. Brouwer

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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    Iron core torque motors provide a high power density, but require high off-axis stiffness, which is normally too demanding for flexure mechanisms especially when considering large range of motion applications. In this paper, a flexure-based suspension for a high torque iron core direct drive torque motor with a large range of motion of 60 degrees is presented. This flexure-based suspension provides the required high radial stiffness (>1000N/mm) combined with a high radial load capacity (500N) over the full range of motion. Furthermore, the suspension maintains a constant position of the pivot axis within 0.1mm, which is required to limit pull-in forces and to stay within alignment tolerances of the actuator. A prototype has been designed and constructed and experimental validations confirm the high radial stiffness and load capacity of the rotor suspension.

    Original languageEnglish
    Title of host publicationEUSPEN's 19th International Conference & Exhibition, Bilbao, ES, June 2019
    EditorsC. Nisbet, Richard K. Leach, D. Billington, D. Phillips
    Number of pages4
    ISBN (Electronic)9780995775145
    Publication statusPublished - Jun 2019
    Event19th EUSPEN International Conference & Exhibition, ICE 2019 - Euskalduna, Bilbao, Spain
    Duration: 3 Jun 20197 Jun 2019
    Conference number: 19


    Conference19th EUSPEN International Conference & Exhibition, ICE 2019
    Abbreviated titleICE 2019
    Internet address


    • Compliant mechanisms
    • Flexure mechanisms
    • Iron core motor
    • Large stroke


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