dreamproject
New Member
Hi all,
Few queries on cracking (interpreting) a shaft encoders output
and other things .
The output from shaft encoders will be a train of pulses (pls. correct me if i'm wrong). If a motor running at about 3000 rpm gives 9000 pulses/sec . (assuming 180 pulses /rev) . -
1. what kind of harware reads these pulses. (adc's , pulse- counters) ?
2. Can this data be input to the PC via Parallel port and be counted by software (QBASIC) , Will the software be quick enough ?
3. How is braking implemented in DC motors for positioning - field reversal ????
4.Will a speeding DC motor shaft not overshoot its intended
position by the time encoder input is recieved and appropriate commands
given ?
5. Is PID implementation easy . I heard that designing PID's with op-amp's might result in "system instability" - quoting , I don't know what that means. :wink:
6. Any PID circuits on DC motor position control would be GREATLY APPRECIATED and so would any resources for encoder construction.
Thanks for your patience and time . And by the way guys , my
project is 25 % completed and that is dedicated entirely to you people
esp. Mr.Nigel .Without your support , I could not have got this far.
Thanks again.
Few queries on cracking (interpreting) a shaft encoders output
and other things .
The output from shaft encoders will be a train of pulses (pls. correct me if i'm wrong). If a motor running at about 3000 rpm gives 9000 pulses/sec . (assuming 180 pulses /rev) . -
1. what kind of harware reads these pulses. (adc's , pulse- counters) ?
2. Can this data be input to the PC via Parallel port and be counted by software (QBASIC) , Will the software be quick enough ?
3. How is braking implemented in DC motors for positioning - field reversal ????
4.Will a speeding DC motor shaft not overshoot its intended
position by the time encoder input is recieved and appropriate commands
given ?
5. Is PID implementation easy . I heard that designing PID's with op-amp's might result in "system instability" - quoting , I don't know what that means. :wink:
6. Any PID circuits on DC motor position control would be GREATLY APPRECIATED and so would any resources for encoder construction.
Thanks for your patience and time . And by the way guys , my
project is 25 % completed and that is dedicated entirely to you people
esp. Mr.Nigel .Without your support , I could not have got this far.
Thanks again.