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  • Request for advice with actuator search.

    To the multiple recipients of Biomch-l:

    I am part of the Mechanical Engineering Senior Design Seminar at
    Yale University. Our project is to design a Spine Tester for Dr. Panjabi
    of the Yale Medical School Orthopaedics Lab. The proposal that we are
    exploring involves a six degree of freedom robot called a Stewart Platform.

    In order to build this we are looking for a linear actuator (either
    pneumatic or electric ball screw) We are looking at controlling
    the actuator force, not displacements with a compluter. We want to apply
    about 25-50 lbs of thrust with a stroke length of about twelve inches.

    We were wondering if anybody has a suggestion of where we could
    find an actuator that would do this.

    If we can not find one, we will probably have to solve this problem
    by controlling displacements measuring with a force sensor.

    If anyone has experience with building or designing a Stewart
    Platform and can give us helpful advice we would appreciate that.

    Thank you for your time. We will post a summery or replies.

    Reply to:
    Andy Snow
    asnow@minerva.cis.yale.edu
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