ROTARY ACTUATOR

PURPOSE:To provide a rotary actuator of good controllability by flattening rotary angle dependency of starting torque in the actuator of permanent magnet rotary type. CONSTITUTION:In a rotary actuator of setting up an excitation coil 1 to a stator 4 and a permanent magnet 2 to a mover 3, a deexcitat...

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Bibliographische Detailangaben
Hauptverfasser:	EBIHARA SUSUMU, KIZAWA MAKOTO, KOIZUMI MAKOTO, NISHIMURA YUJI, SHIRAKAWA SHINJI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY GENERATION INDUCTANCES MAGNETS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a rotary actuator of good controllability by flattening rotary angle dependency of starting torque in the actuator of permanent magnet rotary type. CONSTITUTION:In a rotary actuator of setting up an excitation coil 1 to a stator 4 and a permanent magnet 2 to a mover 3, a deexcitation coil 5 is set up to an air core part of the excitation coil. By flowing a current in an opposite direction to the excitation coil, in the deexcitation coil, a field of partly negating a field of the excitation coil 1 is generated. In this way, the rotary angle dependency of torque generated in the mover 3 is flattened.