Electricity: electrical systems and devices – Safety and protection of systems and devices – Motor protective condition responsive circuits
Patent
1992-07-09
1994-10-18
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Motor protective condition responsive circuits
361 33, 361 51, H02K 2336
Patent
active
053573927
ABSTRACT:
Disclosed is a motor drive device with tacho-generator that can be configured as a back-up motor. This device is designed for the driving of a movable element. It comprises an electrical rotor motor with supply coil, associated with a tachometrical sensor inducing an electrical current in at least one electrical coil, a regulator circuit controlling the speed and the position of the electrical motor as a function of the servo signal delivered by said electrical coil and applied to the supply coil. This device further comprises means to continue the driving of the movable element in the event of the malfunctioning of the electrical motor or of its electrical supply. These means to continue the driving of the movable element are constituted by a failure detection circuit which, in the event of failure, activates switching means to connect the electrical coil of the tachometrical sensor to an electrical supply source. Application: improvement of the safety of a motor drive mechanism.
REFERENCES:
patent: 4162438 (1979-07-01), Osoer
patent: 4948998 (1990-08-01), Fink et al.
patent: 5054917 (1991-10-01), Pepin et al.
patent: 5071226 (1991-12-01), Audion et al.
Patent Abstracts of Japan, vol. 6, No. 211 (E-137) (1089) Oct. 23, 1982 & JP-A-57 113 751, Jul. 15, 1982.
Patent Abstracts of Japan, vol. 9, No. 201 (E-336) (1924) Aug. 17, 1985 & JP-A-60 066 680, Apr. 16, 1985.
Audion Marc
Guyomard Patrick
Rambeaud Jean
Riviere Philippe
"Thomson-CSF"
Jackson S.
Pellinen A. D.
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