electronicsman
Full Member level 5
Hi,
i am confused with RPM calculations of the motor that is the rotations per minute of the motor.
Let us say the RPM of a machine is 6000 RPM.
6000 RPM -> 6000/60 Rotations per second -> 100 rps. If it is a n pole pair motor that is n*2 poles. Then it is 100 * n * 2 electrical angles per second.
electrical angles
100 * n * 2 ----> 1 second
then the number of electrical angles for 1 ms is (100*n*2/1000).
for
1degree ---> 1/(100 * n * 2) seconds.
Am i correct in the above calculations? Why i am asking is i want to estimate the rotor position every 1 ms based on the hall sensor. Currently i don't have either encoder or resolver. One big confusion i have where is the processor clock coming into picture? Can you please help me to understand in what part of calculations does the processor clock will come into picture?
i am confused with RPM calculations of the motor that is the rotations per minute of the motor.
Let us say the RPM of a machine is 6000 RPM.
6000 RPM -> 6000/60 Rotations per second -> 100 rps. If it is a n pole pair motor that is n*2 poles. Then it is 100 * n * 2 electrical angles per second.
electrical angles
100 * n * 2 ----> 1 second
then the number of electrical angles for 1 ms is (100*n*2/1000).
for
1degree ---> 1/(100 * n * 2) seconds.
Am i correct in the above calculations? Why i am asking is i want to estimate the rotor position every 1 ms based on the hall sensor. Currently i don't have either encoder or resolver. One big confusion i have where is the processor clock coming into picture? Can you please help me to understand in what part of calculations does the processor clock will come into picture?