Electricity: motive power systems – Plural diverse motor controls – Acceleration control
Reexamination Certificate
2006-03-14
2006-03-14
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Plural diverse motor controls
Acceleration control
C318S434000
Reexamination Certificate
active
07012391
ABSTRACT:
Method and apparatus for accelerating a motor to an operational velocity using a continuous sequence of current limit values derived from a plurality of discrete current limit values. Each discrete current limit value establishes a maximum current magnitude for the motor over a plurality of intermediate velocities less than the operational velocity. Each current limit value in the continuous sequence of current limit values has a different magnitude for each different one of the plurality of intermediate velocities. The continuous sequence of current limit values are preferably derived by generating coefficients of a multi-order polynomial curve in relation to the discrete current limit values, and obtaining the continuous sequence of current limit values in relation to said coefficients. Faster acceleration, reduced current spiking and less acoustic noise during motor acceleration are thereby obtained.
REFERENCES:
patent: 4130769 (1978-12-01), Karube
patent: 4169990 (1979-10-01), Lerdman
patent: 4405885 (1983-09-01), Okamoto
patent: 4531079 (1985-07-01), Muller
patent: 4631459 (1986-12-01), Fujioka et al.
patent: 4633150 (1986-12-01), Inaji et al.
patent: 4673849 (1987-06-01), Sears et al.
patent: 4712050 (1987-12-01), Nagasawa et al.
patent: 4748386 (1988-05-01), Nakanishi et al.
patent: 4888533 (1989-12-01), Gotoh et al.
patent: 4896807 (1990-01-01), Mundschau
patent: 4912378 (1990-03-01), Vukosavic
patent: 4992710 (1991-02-01), Cassat
patent: 5001405 (1991-03-01), Cassat
patent: 5028852 (1991-07-01), Dunfield
patent: 5117165 (1992-05-01), Cassat et al.
patent: 5159246 (1992-10-01), Ueki
patent: 5166583 (1992-11-01), Min et al.
patent: 5184038 (1993-02-01), Matsui et al.
patent: 5189574 (1993-02-01), Imamura et al.
patent: 5254914 (1993-10-01), Dunfield et al.
patent: 5274310 (1993-12-01), Bahn
patent: 5285135 (1994-02-01), Carobolante et al.
patent: 5298839 (1994-03-01), Takeda
patent: 5334917 (1994-08-01), Lind
patent: 5343127 (1994-08-01), Maiocchi
patent: 5378976 (1995-01-01), Inaji et al.
patent: 5397972 (1995-03-01), Maiocchi
patent: 5541488 (1996-07-01), Bansal et al.
patent: 5631999 (1997-05-01), Dinsmore
patent: 5668680 (1997-09-01), Tremaine
patent: 5703449 (1997-12-01), Nagate et al.
patent: 5745545 (1998-04-01), Hughes
patent: 5777448 (1998-07-01), Matsui
patent: 5780983 (1998-07-01), Shinkawa et al.
patent: 5793558 (1998-08-01), Codilian et al.
patent: 5831403 (1998-11-01), Kanki et al.
patent: 5841252 (1998-11-01), Dunfield
patent: 5870363 (1999-02-01), Sun et al.
patent: 5901009 (1999-05-01), Sri-Jayantha et al.
patent: 5929577 (1999-07-01), Neidorff et al.
patent: 5963706 (1999-10-01), Baik
patent: 5982571 (1999-11-01), Calfee et al.
patent: 5998946 (1999-12-01), Kim
patent: 6002971 (1999-12-01), Lucas
patent: 6011373 (2000-01-01), McConnell et al.
patent: 6078158 (2000-06-01), Heeren et al.
patent: 6100656 (2000-08-01), El-Sadi et al.
patent: 6114825 (2000-09-01), Katz
patent: 6148240 (2000-11-01), Wang et al.
patent: 6160367 (2000-12-01), Higashi et al.
patent: 6178060 (2001-01-01), Liu
patent: 6256163 (2001-07-01), Schmidt et al.
patent: 6294891 (2001-09-01), McConnell et al.
patent: 6320345 (2001-11-01), Yuan et al.
patent: 6710567 (2004-03-01), Heydt et al.
patent: 6737824 (2004-05-01), Aslan et al.
Y. Mizoshita et al., “Vibration Minimized Access Control For Disk Drives,” IEEE Transaction On Magnetics, IEEE, vol. 32 ( No. 3), p. 1793-1798, (Apr. 5, 1996).
Berger Derek J.
Lucente David K.
Ro Bentsu
Seagate Technology LLC
LandOfFree
Motor acceleration using continuous sequence of current... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motor acceleration using continuous sequence of current..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor acceleration using continuous sequence of current... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3549425