Re: [PSUBS-MAILIST] Re: Motor controller...

[Subscuba@aol.com]

In a message dated 2/18/02 9:02:08 PM Eastern Standard Time, laurent_rouffignac@yahoo.com writes:


> Do you plan to have an acceleration and deceleration
> ramp?


Nope.

> If you're using the UC2637, how are you going to
> generate the feedback information on the voltage (or
> the speed)? If you're using a resistor/shunt it should
> support more than 100A with a value as small as
> possible....


This is not a closed loop speed control to keep it simple. It is open loop with a current limit. The current sense resistor is limited to a voltage of 0.2 volts. If we want to keep the peak current to 50 amperes the resistor would have a value of 4 milliohms.

Have fun,

Ken Martindale

> Laurent