DEVICE AND METHOD FOR ACQUIRING INFORMATION RELATING TO ROTATION OF DIRECT CURRENT COMMUTATOR MOTOR MOTOR

An apparatus (100), which obtains information on the rotation of a motor (10) including a commutator (20), includes a rotation angle calculator (32) that calculates a rotation angle (θ) of the motor (10) based on a voltage V between terminals of the motor (10) and a current (Im) flowing through the...

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Bibliographische Detailangaben
Hauptverfasser:	ABE, Tsutomu, MIYAKO, Ikuyasu
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	An apparatus (100), which obtains information on the rotation of a motor (10) including a commutator (20), includes a rotation angle calculator (32) that calculates a rotation angle (θ) of the motor (10) based on a voltage V between terminals of the motor (10) and a current (Im) flowing through the motor (10), a first signal generator (34) that generates a first pulse signal (Pa) based on a ripple component (Ir) included in the current (Im), a second signal generator (35) that generates a second pulse signal (Pb) indicating that the motor (10) has rotated by an inter-slit angle (θc) based on the first pulse signal (Pa) and the rotation angle (θ), and a rotation information calculator (36) that calculates the information on the rotation of the motor (10) based on an output from the second signal generator (35) .