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Subject: Re: Freq. to Voltage Converter

Date: 10/28/03 at 9:42 AM
Posted by: Brad
E-mail: bdmartin[AT55]mail.lakeheadu.ca (replace [AT55] with @ to reply)
Message Posted:

In Reply to: Re: Freq. to Voltage Converter posted by Russ Kincaid on 10/27/03 at 10:33 PM:

The project is to control a DC MOTOR at a constant rpm (20rpm to be exact). If you apply a load to the shaft the PI controller will compensate for this load and continue to turn the motor at 20rpm. However there is an optical sensor (in the feedback loop) which outputs a pulse, this pulse must be transformed to a voltage in order for the controller to understand it and calculate the error. This is where the frequency to voltage converter comes in to play, however we are restricted with our design and not allowed to use a F/V IC.


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