Inventors:
Steven D. Meyer - Snohomish WA, US
Assignee:
Astronics Advanced Electronic Systems Corp. - Redmond WA
International Classification:
H02K 29/14
US Classification:
3184003, 31840037, 31840038, 31840039, 31840041, 322 12, 322 13, 322 14, 322 29, 323250
Abstract:
An apparatus is disclosed for simultaneously measuring the rotational speed and/or direction of a shaft, and providing control power in accordance with the shaft rotation. The apparatus includes a permanent magnet machine (PMM) having a multipole rotor and a stator. The rotor has a plurality of permanent magnet poles and connection to the rotating shaft; the stator includes a winding and electrical connections, so that motion of the rotor with respect to the stator causes a voltage signal at the electrical connections. The apparatus also includes a circuit including a power conversion portion and a speed/direction sensing portion. The circuit receives the voltage signal from the PMM, and simultaneously outputs control power from the power conversion portion and a signal indicating the rotational speed and/or direction of the shaft from the sensing portion.