Hi, i have facing some problem during i upgrade a project. This project is an
opened loop system, it only achieved up to controlling the speed of motor,
detecting the speed of motor, and switching the direction of motor while
controlling the motor (This motor is a 12 VDC motor).
In order to improve
the project, closed-loop dc motor control system will be implemented to correct
the error of the motor's speed and maintaining the speed for the initial
setting.
From the problem at above, I would like to use PID control
method to do the closed loop system.
I already
installed the PID toolkit V8.2 and control design toolkit V2.1.2, and i'm using DAQ usb 6221, LabVIEW 8.5
Below is my problem...
[URL=http://img502.imageshack.us/my.php?image=howtocreatethesetpointbu5.jpg][IMG]http://img502.imageshack.us/img502/646/howtocreatethesetpointbu5.th.jpg[/IMG][/URL]
question: 1. How to generate a icon for set point? my setpoint is duty cycle...
2. How to feedback the output duty cycle to summing junction?
below this is my basic concept
[URL=http://img502.imageshack.us/my.php?image=closedloopeg3.jpg][IMG]http://img502.imageshack.us/img502/6460/closedloopeg3.th.jpg[/IMG][/URL]
Problem 2:
[URL=http://img502.imageshack.us/my.php?image=problem1cu1.jpg][IMG]http://img502.imageshack.us/img502/3069/problem1cu1.th.jpg[/IMG][/URL]
question: Why PID toolkit icon cannot wire to cd series.vi?
below this is my basic concept
[URL=http://img502.imageshack.us/my.php?image=closedloopeg3.jpg][IMG]http://img502.imageshack.us/img502/6460/closedloopeg3.th.jpg[/IMG][/URL]
Below is my original program...
http://rapidshare.com/files/140538836/pwm_generate-final_PSMII.vi.html
