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New type servo — Parallax Forums

New type servo

Luiz mauricio mionLuiz mauricio mion Posts: 77
edited 2008-09-08 08:41 in Robotics
Here is my prototype of servo.
It[noparse][[/noparse]s in a initial fase look the figure , have 4 electromagnets that have controled via microprocessor controll ,.
With one have field opost with any other the servo axis move the brake control acts to stop the motion.

ThankYou

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05-09-07_021835.jpg
640 x 480 - 110K

Comments

  • Luiz mauricio mionLuiz mauricio mion Posts: 77
    edited 2008-09-04 12:45
    the control is milimetrico the brake acts with milimetrica or lesser precision as the size of the servant, in this case the course and of 3,5 cm having a resolution of 35 points

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  • SRLMSRLM Posts: 5,045
    edited 2008-09-05 19:22
    What happened to the other thread?

    Anyway, is it a linear servo or a rotational version? From the picture and your description (what I could understand) it seems like a bar that moves back and forth. It looks like it takes 4 I/O pins (1 per magnet)
  • Luiz mauricio mionLuiz mauricio mion Posts: 77
    edited 2008-09-05 20:39
    Yes it move around x axis not rotate , the idea for this project is to make mini servos or big servos dependent how amount of eletromagnetic fiel .

    If have any question contact me.

    Thank You.

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  • Luiz mauricio mionLuiz mauricio mion Posts: 77
    edited 2008-09-05 20:43
    No this type runs with inverted current around the electromagnets 2 pins per electromagnet . invert and no invert for more power.

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  • SRLMSRLM Posts: 5,045
    edited 2008-09-08 00:36
    how much current does it draw? Seems if it's powered and controlled from a couple of pins, it would need to be isolated. Also, how strong is the magnetic field?
  • Luiz mauricio mionLuiz mauricio mion Posts: 77
    edited 2008-09-08 08:20
    The amount of draw current for this system, aproach to a conventional electric engine with the same characteristics of torque. Notice that all the bobbins act together for maximum exploitation of torque, and the control for this servo are H Bridge .

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  • Luiz mauricio mionLuiz mauricio mion Posts: 77
    edited 2008-09-08 08:32
    Sorry about my previous post , the correct numbers of pins are depent of the design of your device to control the mechanism , but the final are H-Bridge controll transistors

    Thank You !!

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  • Luiz mauricio mionLuiz mauricio mion Posts: 77
    edited 2008-09-08 08:41
    the interesting one to notice and that the servant can be very small fact, to function in very small robots, with price well in account.

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