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Old 11-05-2014, 08:10 PM   #1289 (permalink)
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Originally Posted by e*clipse View Post
All it will require is an "electronic differential." Since the motor controller is controlling torque, this will almost take care of itself. Just give the same throttle signal to both front motor controllers.
I'm with Astro on this one. The differential case of going around the corner, and allowing one wheel to 'slip' is OK with the same torque setpoint to each wheel.

If one wheel loses traction, the torque setpoint will accelerate the wheel quickly. Depending on the acceleration rate, I don't know if the current will go down in an obvious way?

Maybe a limit on the difference between the frequency output for the two wheels? That would imply sharing the output frequency between the paralleled controllers.

I see a solution in having the same controller develop outputs for both AC motors - twice the calculations and twice the outputs ... but less complicated to co-ordinate? I don't like that solution but I can't come up with anything better right now.
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