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???
02/03/03 13:18
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 		 #38154 - RE: close loop motor speed control
Responding to: ???'s previous message
hi Steve
I had used this method (compare an encoder
count with an internal count) but it is not
smooth
I use Timer0 interrupt (every 200us) and my
motor speed (PWM duty cycle) varry from
0 to 100 .
Because this duty cycle seems not proportional
to rpm (or internal count)so ramped at a rate proportional to speed is not good
I have test this
with speed from 0 to 10(duty cycle from 0 to
10%) it seems have linear relation with rpm
(proportional) but
with speed from 11 to 100,it has not this
linear relation.
regards


List of 32 messages in thread
TopicAuthorDate
close loop motor speed control            01/01/70 00:00      
   RE: close loop motor speed control            01/01/70 00:00      
      RE: close loop motor speed control            01/01/70 00:00      
         RE: close loop motor speed control            01/01/70 00:00      
            RE: close loop motor speed control            01/01/70 00:00      
      RE: close loop motor speed control            01/01/70 00:00      
   RE: close loop motor speed control            01/01/70 00:00      
      RE: close loop motor speed control            01/01/70 00:00      
         RE: close loop motor speed control            01/01/70 00:00      
            RE: close loop motor speed control            01/01/70 00:00      
   RE: close loop motor speed control            01/01/70 00:00      
      RE: close loop motor speed control            01/01/70 00:00      
         RE: PLL motor speed control            01/01/70 00:00      
            RE: PLL motor speed control            01/01/70 00:00      
               RE: PLL motor speed control            01/01/70 00:00      
                  RE: PLL motor speed control            01/01/70 00:00      
                     RE: PLL motor speed control            01/01/70 00:00      
                        RE: PLL motor speed control            01/01/70 00:00      
                           RE: PLL motor speed control            01/01/70 00:00      
                        RE: PLL motor speed control            01/01/70 00:00      
                           RE: PLL motor speed control            01/01/70 00:00      
                              RE: PLL motor speed control            01/01/70 00:00      
                                 RE: PLL motor speed control            01/01/70 00:00      
                           RE: PLL motor speed control            01/01/70 00:00      
   RE: close loop motor speed control            01/01/70 00:00      
   RE: close loop motor speed control            01/01/70 00:00      
      RE: close loop motor speed control            01/01/70 00:00      
         New robot project            01/01/70 00:00      
            RE: New robot project            01/01/70 00:00      
               RE: New robot project            01/01/70 00:00      
                  RE: New robot project            01/01/70 00:00      
   RE: close loop motor speed control            01/01/70 00:00      

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