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Unread 31-01-2011, 00:52
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Ether Ether is offline
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Re: Stalling the BaneBot 775 motors

Quote:
Originally Posted by fox46 View Post
Whatever the capacitor is in the middle of the ring of transistors is.
Here's the FET bridge portion of the Black Jag. As you can see, there is no filter capacitor on the Jag's output.


Quote:
I agree but seems like this is much more than a basic AC circuit
With the rotor stalled (which is what we're discussing) it's just a switched LR circuit.


Quote:
The original purpose of the OP's question was to determe if it was acceptable to stall the RS775 at 20% power.
Correct.


Quote:
My OPINION is that it is not acceptable, but by all means, go for it- you are only burning up 40W right?
I do not know how long the RS775 can tolerate 40W without overheating. I suggested to Leav that he run some low-power tests to determine at what point the motor starts to become uncomfortably warm to the touch.


Quote:
Last I checked, a 20% position of a joystick did not result in a 4% robot speed.
I don't know where you got that from. I hope you do not think I am claiming that.


Quote:
Let me know what your simulation shows.
I already ran the simulation with 20 uH and it shows 40 watts. I do not know what the actual inductance is but I suspect it is higher than that.



Last edited by Ether : 31-01-2011 at 01:03.
 


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