Patent ID: 11888430
Assignee: MAGNETEK, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 6:
7. A motor drive configured to increase resolution of a position feedback signal, the motor drive comprising:
an input configured to receive a position feedback signal; and
a processor configured to execute a first series of instructions at a first time interval and to execute a second series of instructions at a second time interval, wherein:
the first time interval is shorter than the second time interval,
the first series of instructions execute to:
increment a first counter when a new pulse from the position feedback signal is detected,
read a high resolution counter register from a high resolution counter during each first time interval,
add a value of the first counter to the high resolution counter register to obtain a new value for the high resolution counter register during each first time interval, and
store the new value in the high resolution counter register during each of the first time intervals,

the second series of instructions executes a speed regulator using the high resolution counter during each second time interval.