marko
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Posts: 5
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Post by marko on Dec 8, 2014 5:32:32 GMT
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Post by tronicgr on Dec 8, 2014 5:58:16 GMT
Hi Marco, There is a member in France that is going to be using such AC servomotor with the AMC1280USB: www.racingfr.com/forum/index.php?s=&showtopic=48297&view=findpost&p=1524832The best and easiest mode with AMC1280USB will be the analog velocity mode: www.youtube.com/watch?v=nB2JmXt12_c Its very easy to connect it for this mode. I think only two wires, Ground and Analog out from the 6DOF ext board. Then you can also try the other mode that is following the pulses from the AMC1280USB to position the servo drive. The difference is that I use one channel for pulses and one for direction so I can count the pulses for each direction. You should be able to configure the servo drive for Step and Dir function. Thanks Thanos
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marko
New Member
Posts: 5
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Post by marko on Dec 9, 2014 0:57:47 GMT
Thank you for your well considered answer Thanos. Good to know the AMC1280USB can be used with these AC servo motors.
The AC servo on the link is 600W but I'm thinking that a more powerful motor ( say 1000W for a 6DOF ) would give me more of a safety margin. By this I mean I won't need to drive the higher powered motors to their limit and would be able to use a lower worm gear ratio ( say 40:1 ) instead of 50 or 60:1.
Does this make sense?
Cheers,
Marko
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Post by tronicgr on Dec 9, 2014 5:33:56 GMT
Yes, you can limit the motor to lower speed, to compensate for the faster gearbox. Same concept with the AC motors, many are using 60:1 worm gearbox that is cheaper and reducing the max motor speed to 50%. Lower consumption as well Thanks Thanos
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Post by biscuit on Dec 10, 2014 15:44:03 GMT
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Post by riton39 on Dec 10, 2014 20:23:15 GMT
why want to use servo motor?
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marko
New Member
Posts: 5
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Post by marko on Dec 10, 2014 23:12:52 GMT
Hi riton39,
I want to use servo motors because they are specifically designed for motion control. There are other types of solutions and motors like AC induction or DC etc of course, but I want my 6DOF to replicate the motion of all degrees of freedom with high fidelity.
In terms of cost, DC appears to be the cheapest, followed by AC induction and then Servo motors. But there isn't really that much difference in cost between these.
Marko
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Post by riton39 on Dec 11, 2014 7:20:31 GMT
I just did a comparison, for our use in games, there is no real difference. do not forget the price of the gearbox.
servo motor 60 rpm
AC motor 30 rpm, effet 26 only
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