Can I count the PWM pulses and note the timer value simulataneously.

[dvr]

Im using 6024E. I want to be used for 1-phase motor control. I could generate PWM pulses and read the feedback analog current, but I am unable to read the velocity of the motor. Counting PWM pulses(generated by sensor for each degree of rotation) and reading the digital timer value simultaneously to calculate velocity of the motor. If any body can give the solution it will be appreciated

[Filipe A.]

Hello;

In case you can read a digital pulse train that would give you the speed of the motor, you can use one of the counters of the DAQ board you have to accomplish that.

You can configure the counter as buffered event counter, hook up the digital pulse train to the counter gate, and since you have the frequence of the internal timebase that is connected to the counter input, you can calculate the speed of the motor by having the count values that are stored at the event of a gate input pulse.

Hope this helps.
Filipe A.
Applications Engineer
National Instruments