X-ray or gamma ray systems or devices – Photographic detector support – Dental
Patent
1998-05-07
1999-07-13
Masih, Karen
X-ray or gamma ray systems or devices
Photographic detector support
Dental
318716, 318798, 318802, 318254, 318138, 318434, H02P 528
Patent
active
059237287
ABSTRACT:
A motor controller comprises a stator current production unit for producing stator current commands that are command values for the stator current flowing through the stator windings, a drive unit for supplying electric power to the stator windings based on the stator current commands, a stator current detection unit ZU, ZV, and ZW, for detecting the stator currents flowing through the stator windings, and a saturation degree production unit for producing a saturation degree indicating by how much the stator current is not following the stator current command. The stator current production unit produces the stator current commands based on the saturation degree. The saturation degree production unit produces the saturation degree based on the current commands, the stator current signals, and the pole-position signals.
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IEA-92-30, entitled "Development of High Performance Electric Vehicle Driving Device", along with an English Language Translation of section 3.1.
K. Hatanaka et al. "Variable Speed Drive System of Permanent Magnet Synchronous Motors with Flux-weakening Control," 1991 Society of Electrical Engineers Industrial Applications Division National Convention Monograph Collection No. 74, pp. 310-315, along with an English Language Translation of section 2-3.4.
Iijima Tomokuni
Ikkai Yasufumi
Isoda Mineaki
Narazaki Kazushige
Tagome Masaki
Masih Karen
Matsushita Electric - Industrial Co., Ltd.
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