Osamu Koizumi
Osamu Koizumi, Higashiibaraki-Gun JP
Patent application number | Description | Published |
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20080284269 | Permanent Magnet Electric Rotating Machine and Electromotive Vehicle Using Permanent Magnet Electric Rotating Machine - A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided. | 11-20-2008 |
20090174274 | Permanent Magnet Electric Rotating Machine and Electromotive Vehicle Using Permanent Magnet Electric Rotating Machine - A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided. | 07-09-2009 |
20110062813 | Permanent Magnet Electric Rotating Machine and Electromotive Vehicle Using Permanent Magnet Electric Rotating Machine - A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided. | 03-17-2011 |
Osamu Koizumi, Higashi-Ibaraki-Gun JP
Patent application number | Description | Published |
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20080284270 | Driving Apparatus - A rotating electric machine comprises a stator having stator salient poles, three-phases windings would around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said stator salient poles. The three-phase windings are concentratively wound around each of the stator salient poles, with windings of each phase wound around at more than one stator salient pole. The windings of each phase have a phase difference of voltage between at least one of the windings and the other. | 11-20-2008 |
20090309449 | Driving Apparatus - A rotating electric machine comprises a stator having stator salient poles, three-phases windings would around said stator salient poles, a rotor rotatable held inside the said stator, and permanent magnets inserted into said rotor and positioned opposite to said stator salient poles. The three-phase windings are concentratively wound around each of the stator salient poles, with windings of each phase wound around at more than one stator salient pole. The windings of each phase have a phase difference of voltage between at least one of the windings and the other. | 12-17-2009 |
Osamu Koizumi, Iruma-Shi JP
Patent application number | Description | Published |
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20090262241 | IMAGE SIGNAL GENERATION UNIT, DIGITAL CAMERA, AND IMAGE SIGNAL GENERATION METHOD - An image signal generation unit comprises a horizontal pixel number conversion unit for performing the conversion of horizontal direction pixels corresponding to horizontal scanning period of NTSC system, for digital image data of the chrominance difference having the picture element number configuration based on the VGA standard, and a liquid crystal encoder for generating the primary color group digital image data RGB from digital image data YUV processed by the horizontal pixel number conversion unit, and output them directly on a liquid crystal display. | 10-22-2009 |
Osamu Koizumi, Higashibaraki-Gun JP
Patent application number | Description | Published |
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20090174275 | Permanent Magnet Electric Rotating Machine and Electromotive Vehicle Using Permanent Magnet Electric Rotating Machine - A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided. | 07-09-2009 |
20090174276 | Permanent Magnet Electric Rotating Machine and Electromotive Vehicle Using Permanent Magnet Electric Rotating Machine - A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided. | 07-09-2009 |
Osamu Koizumi, Higashiibaraki JP
Patent application number | Description | Published |
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20090039729 | DC Brushless Motor for Electrical Power Steering and the Production Method Thereof - The stator core of a motor comprises an annular back core, and a plurality of tees created separately from the back core and secured onto the inner periphery of the back core. A stator coil is wound on each of the tees by a distributed or concentrated winding method. The stator core and stator coil are formed by molding. | 02-12-2009 |
Osamu Koizumi, Tokyo JP
Patent application number | Description | Published |
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20140350894 | Sensor Device with Sampling Function, and Sensor Data Processing System Using Same - The sensor device includes a counter for counting the number of count commands used to perform measurements while maintaining among multiple sensor devices the ratio of measurement intervals; a ratio-holding-unit for setting the ratio to a desired ratio and holding respective values of the ratio for each of the multiple sensor devices; a sampling-timing-generating-unit for receiving a count value of the counter and the setting value of the ratio held by the ratio-holding-unit, and for generating a sampling timing signal based on the comparison result between the count value and the setting value; and a sampling-unit for sampling a detection signal detected by the detecting unit, by using the sampling timing signal generated by the sampling-timing-generating-unit. | 11-27-2014 |