Motor state counting

Details Motor state counting Motor state counting

2007-06-12

2007-06-12

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

C324S207200, C324S207250

Reexamination Certificate

active

11413276

ABSTRACT:
Systems, methods, and computer-readable media are disclosed for error-compensated counting of Hall states for motor position feedback and/or commutation. An indicated Hall state is detected by digital Hall state sensors and a duration of the Hall state is compared to a specified time period. When the duration exceeds the specified time period, the indicated Hall state is compared to one or more valid Hall states and a position counter is changed for valid states. When the indicated Hall state is invalid, the position counter is not changed. The Hall state sensors may be connected to logic means and may detect the position of a rotor of a permanent magnet motor relative to a stator. When noise induces a change in an indicated Hall state, corresponding noise-induced effects on the position counter may be may be removed through error-compensated counting.

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