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  1. #1
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    motor current control

    may i know the advantages and disadvantages of a dc motor with an outer speed control loop and an inner current control loop?
    any information link available? I need it to complete my report.
    thanks a lot!!

    •   Alt16th March 2009, 05:15

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  2. #2
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    Re: speed control of DC motor with inner current control loo

    Torque has a close relationship to current, so the inner loop regulates the torque. The setpoint for the torque is derived from the speed controller. So the speed controller asks for a torque needed to maintain a certain speed.

    Dividing the control loop in stages like this has the advantage that every loop can be optimised on its own (if the inner loop has a much bigger bandwidth than the outer loop). It should be easier to create a stable system.



    •   Alt16th March 2009, 21:16

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  3. #3
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    speed control of DC motor with inner current control loop

    Dear all
    I want to ask svhb about what is the effect of the bandwidth on the system because I don't know about the subject of the bandwidth
    if there is any book that talk about this subject please tell me about it.
    Thanks



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