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???
07/26/03 02:21
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#51482 - Close-loop Control - Henry
Responding to: ???'s previous message

Maybe you had a very non-linear pattern for the correction to be applied that forced you to go through the ADC / EPROM / DAC route !!

Otherwise had it been a linear correction pattern then maybe you could have achieved the same with a simple summing amplifier with one leg from the setpoint pot and the other from the feedback pot , with suitable gain corrections ?

This reminded me of an application where I used an EPROM for linearising a transducer output - as a student had plenty of time to manually enter the 4000 odd values !

Raghu

List of 10 messages in thread
TopicAuthorDate
Stepper Motor under Close-loop Control            01/01/70 00:00      
   RE: Stepper Motor under Close-loop Control            01/01/70 00:00      
      RE: Stepper Motor under Close-loop Control            01/01/70 00:00      
         RE: Stepper Motor under Close-loop Contr            01/01/70 00:00      
            RE: Stepper Motor under Close-loop Contr            01/01/70 00:00      
               Printhead position feedback            01/01/70 00:00      
                  RE: Printhead position feedback            01/01/70 00:00      
   RE: Stepper Motor under Close-loop Control            01/01/70 00:00      
       Close-loop Control - Henry            01/01/70 00:00      
         RE: Close-loop Control - Henry            01/01/70 00:00      

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