PWM PID loop on 7344 motion controller

[any]

I need to control motion by PWM, with the help of 7344 motion controller.Please verify if it possible or not, and how can I do it.Please provide me(if it possible)any example of solution of this problem.

[Yusuf C]

Hello,

7344 has two open loop PWM outputs with a max PWM frequency of 32 kHz. Once you install the driver, NI-Motion, for the card there will be a shipping example called PWM Output.vi.
Let me know if you have further questions about this.

Regards,

Yusuf C.
Applications Engineering
National Instruments

[any]

Dear Yusuf C.

I have seen all the VI's regarding PWM, but I need to controll the motion with the help of PID loop, just like as I do it with servo motors, and I can't find any VI example , with this featurs,so provide me any example of PWM motion controll with the PID loop .Thank you beforhand.

With regards
Vaheh Galfayan

[Yusuf C]

Hello,

The onboard PID circuitry can only be utilized with servos and closed loop steppers. You can write your own PID loop in software using the PWM functions and the Read Encoder Position.flx. This should work pretty well for low loop rates (since it's implemented in sw). I don't think there are any examples of it available but it should be pretty straight forward.

Regards,

Yusuf C.
Applications Engineering
National Instruments