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AssigneesSony Precision Technology Inc., Honda Giken Kogyo Kabushiki Kaisha
InventorsYasuo Nekado, Masaaki Kusumi, Ken Onoe, Akihiro Iwazaki, Koji Matsubara, Shinji Ohkuma, Tatsuhiro Tomari, Shinichi Inagawa
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Two sensors are provided on a clutch core. Sensor coils are driven at a high frequency by a high-frequency driving circuit. As the sensors sense a magnetic flux of a magnetic circuit including the clutch core and an armature, the impedance of the sensor coils changes. In accordance with the outputs from the sensor coils at this point, an impedance detecting circuit detects the impedance of the sensor coils. Then, an impedance combining circuit combines the impedance of the sensor coils. On the basis of the combined impedance, a current control circuit controls a current supplied to an exciting coil. Thus, the attracting force of the armature to the core excited by the exciting coil is controlled.
An electromagnetic clutch comprising:
Dependencies are inferred from the claim text.