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专利名称：High speed DC motor发明人：Craig Clarke申请号：US07/154334申请日：19880130公开号：US04947071A公开日：19900807
摘要：The stator electromagnets (80', 82', 84', 86', 88', 90') face inward about therotor cavity (12) of the motor. Spaced horseshoe magnets (70) with spaced apart,opposite poles face outward about the periphery (22) of the rotor (20). The statorelectromagnets are in two arrays. Each array is aligned with one pole of the rotor set ofhorseshoe magnets and has a pulling electromagnet (80' or 86') of a pole opposite tothe pole of the rotor magnet. Each array also includes two pushing electromagnets (82',84' or 88', 90') circumferentially offset from the pulling electromagnet, which are of amagnetic pole the same as the pole of the rotor magnet. Optical sensors (173, 175),which are axially aligned with the electromagnets, sense the position of rotor with regardto points on the stator. Switches on a circuit card associated with each array of
electromagnets connect to the corresponding optical sensor for alternatively passing orblocking current to the electromagnets. The switches energize and de-energize thepulling and pushing electromagnet when the rotor magnet passes an adjacent,preceding, pulling electromagnets when the rotor magnet passes a predeterminedposition.
申请人：CLARKE; CRAIG
代理机构：Poms, Smith, Lande & Rose
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