Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2008-05-20
2008-05-20
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S057000
Reexamination Certificate
active
07376525
ABSTRACT:
An apparatus comprises a brushless motor, driver, incremental displacement sensor, and processor. The motor has a rotor, stator, and electrical terminals accepting a drive signal. The initial phase of the rotor is unknown. The driver is connected to the electrical terminals and produces the drive signal. The displacement sensor is configured to measure a displacement of the rotor and to produce an output signal. The processor has an input receiving the output signal and an output connected to the driver. The processor causes the driver to produce the drive signal according to a predetermined function of time, observes the output signal from the displacement sensor resulting from the drive signal, and performs mathematical computations on the basis of the observed output signal and a model of dynamic behavior of the motor to estimate the initial phase of the rotor.
REFERENCES:
patent: 4884016 (1989-11-01), Aiello
patent: 5376870 (1994-12-01), Ueda et al.
patent: 5834912 (1998-11-01), Nakamura et al.
patent: 5874821 (1999-02-01), Monleone
patent: 6401875 (2002-06-01), Marvin et al.
patent: 2004/0250630 (2004-12-01), Yao
patent: 0708521 (1995-09-01), None
Deutscher, “A Linear Differential Operator Approach to Flatness Based Tracking for Linear and Non-Linear Systems,”Int. J. Control, vol. 76, No. 3, pp. 266-276, 2003.
Antritter et al., “Tracking Control for Nonlinear Flat Systems by Linear Dynamic Output Feedback,”IFAC, 2004.
Martin et al., “Flat Systems, Equivalence and Trajectory Generation,” (abstract) http://citeseer.ist.psu.edu/update/659411, Apr. 23, 2006.
Malaizé et al., “Active Estimation of the Initial Phase for Brushless Synchronous Motors,” 9th International Workshop on Advanced Motion Control, Istanbul, (IEEE Catalog No. 06TH8850C; ISBN: 0-7803-9513-3), Mar. 27-29, 2006.
International Search Report for PCT/US06/018422, dated Jan. 4, 2007, 4 pages.
Written Opinion of the International Searching Authority for PCT/US06/018422, dated Jan. 4, 2007, 9 pages.
Desailly Roger
Duquenoy Franck
Gvero Daniel
Levine Jean
Malaize Jeremy
Barlow John
Newport Corporation
Stoel Rives LLP
Swienton Brian F.
Washburn Douglas N
LandOfFree
Apparatus and method for estimation of initial phase of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for estimation of initial phase of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for estimation of initial phase of a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2805310