Linear position sensing system and coil switching methods...

Electricity: motive power systems – Linear-movement motors

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C310S012060

Reexamination Certificate

active

06952086

ABSTRACT:
A control system for a linear motor adapted to accurately supply a moving window of power to the stator coils. A plurality of individually switched stator coils run the length of a linear motor to move a rotor down the long axis of the stator. Accurate inductive-based position sensors continuously provide position data for the moving rotor. A processing unit calculates a proper time delay from a source voltage peak in order to apply power to the next stator coil in the moving direction of the rotor such that no DC offshoot/undershoot occurs. The linear motor control system optionally includes a failure prevention switching scheme in which pairs of individual stator coils on opposite sides of a double-sided stator are switched together.

REFERENCES:
patent: 2406381 (1946-08-01), Jones et al.
patent: 2412511 (1946-12-01), Jones
patent: 3721874 (1973-03-01), Palenc et al.
patent: 3904941 (1975-09-01), Matsui et al.
patent: 3906262 (1975-09-01), Shichida et al.
patent: 4014015 (1977-03-01), Gundlach
patent: 4068152 (1978-01-01), Nakamura et al.
patent: 4454457 (1984-06-01), Nakamura et al.
patent: 4595870 (1986-06-01), Chitayat
patent: 4723103 (1988-02-01), Gilgen
patent: 4767954 (1988-08-01), Phillips
patent: 4795113 (1989-01-01), Minovitch
patent: 4926741 (1990-05-01), Zabar
patent: 4928572 (1990-05-01), Scott et al.
patent: RE33314 (1990-08-01), Cowles
patent: 4973892 (1990-11-01), Murata et al.
patent: 5003260 (1991-03-01), Auchterlonie
patent: 5064998 (1991-11-01), Holling
patent: 5136217 (1992-08-01), Hoffmann et al.
patent: 5207304 (1993-05-01), Lechne et al.
patent: 5302872 (1994-04-01), Ohki et al.
patent: 5433155 (1995-07-01), O'Neill et al.
patent: 5467718 (1995-11-01), Shibata et al.
patent: 5598044 (1997-01-01), Satomi et al.
patent: 5668421 (1997-09-01), Gladish
patent: 5808537 (1998-09-01), Kondo et al.
patent: 5815091 (1998-09-01), Dames et al.
patent: 5880514 (1999-03-01), Nagatomo
patent: 5941353 (1999-08-01), Minoshima et al.
patent: 6007022 (1999-12-01), Stallard, III
patent: 6011508 (2000-01-01), Perreault et al.
patent: 6060881 (2000-05-01), Dilger et al.
patent: 6333628 (2001-12-01), Yeh et al.
patent: 6815847 (2004-11-01), Duncan et al.
patent: 6825631 (2004-11-01), Nakamura
Doyle et al., Electromagnetic Aircraft Launch System— EMALS, IEE Transactions on Magnetics, vol. 31, No. 1, pp. 528-533, 1995.
Doyle et al., The Benefits of Electromagnetically Launching Aircraft, Naval Engineers Journal, pp. 77-82, 2000.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Linear position sensing system and coil switching methods... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear position sensing system and coil switching methods..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear position sensing system and coil switching methods... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3451004

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.