Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate
2004-01-02
2008-10-21
Holmes, Michael B (Department: 2129)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Mechanical control system
Reexamination Certificate
active
07440821
ABSTRACT:
A method of yielding the average current in a PWM driven coil for an electrohydraulic valve. The method includes transmitting a feedback signal into a Finite Impulse Response filter to take multiple signal samples in order to calculate and average value of current within one cycle. This average value is transmitted to an algorithm that generates a pulse width signal that drives the coil of the electrohydraulic valve in the next system cycle.
REFERENCES:
patent: 4138632 (1979-02-01), Pauwels et al.
patent: 4437385 (1984-03-01), Kramer et al.
patent: 4490841 (1984-12-01), Chaplin et al.
patent: 5012722 (1991-05-01), McCormick
patent: RE33846 (1992-03-01), Kramer et al.
patent: 5341298 (1994-08-01), Singleton et al.
patent: 5381336 (1995-01-01), Shorkey
patent: 5398286 (1995-03-01), Balestri et al.
patent: 5414339 (1995-05-01), Masaki et al.
patent: 5553683 (1996-09-01), Wenzel et al.
patent: 5704200 (1998-01-01), Chmielewski et al.
patent: 5915313 (1999-06-01), Bender et al.
patent: 5938947 (1999-08-01), Takano et al.
patent: 6201720 (2001-03-01), Tracy et al.
patent: 6204650 (2001-03-01), Shimamori
patent: 6233511 (2001-05-01), Berger et al.
patent: 6249418 (2001-06-01), Bergstrom
patent: 6347753 (2002-02-01), Anderson
patent: 6430220 (2002-08-01), Determan
patent: 6433720 (2002-08-01), Libove et al.
patent: 6492821 (2002-12-01), Marko et al.
patent: 6580247 (2003-06-01), Nakazawa
patent: 6580260 (2003-06-01), Takita
patent: 6640834 (2003-11-01), Hamkins et al.
patent: 6657575 (2003-12-01), Poletto
patent: 6727832 (2004-04-01), Melanson
patent: 6801382 (2004-10-01), Kimura et al.
patent: 6859631 (2005-02-01), Suzumi et al.
patent: 6927561 (2005-08-01), Schottler
patent: 6975146 (2005-12-01), Schottler
patent: 7247955 (2007-07-01), Tracy et al.
Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/PID—controller.
CMOS outlier rejection circuit Vlassis, S.; Siskos, S.; Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on [see also Circuits and Systems I: Regular Papers, IEEE Transactions on] vol. 48, Issue 7, Jul. 2001 pp. 910-914 Digital Object Identifier 10.1109/81.933335.
CMOS outlier rejection circuit Vlassis, S.; Siskos, S.; Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on vol. 5, May 28-31, 2000 pp. 729-732 vol. 5 Digital Object Identifier 10.1109/ISCAS.2000.857605.
Static electromigration analysis for signal interconnects Chanhee Oh; Blaauw, D.; Becer, M.; Zolotov, V.; Panda, R.; Dasgupta, A.; Quality Electronic Design, 2003. Proceedings. Fourth International Symposium on Mar. 24-26, 2003 pp. 377-382 Digital Object Identifier 10.1109/ISQED.2003.1194762.
A new duty cycle parallel control method and FPGA implementation for AC-DC converters with power factor correction (PFC) Zhang, W.; Feng, G.; Liu, Y-F.; Wu, B.; Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE vol. 2, Mar. 6-10, 2005 pp. 805-811 vol. 2 Digital Object Identifier 10.1109/APEC.2005.
Modeling and robust control design for aircraft brake hydraulics Tunay, I.; Rodin, E.Y.; Beck, A.A.; Control Systems Technology, IEEE Transactions on vol. 9, Issue 2, Mar. 2001 pp. 319-329 Digital Object Identifier 10.1109/87.911383.
Novel bidirectional linear actuator for electrohydraulic valves Qipeng Li; Fan Ding; Chuanli Wang; Magnetics, IEEE Transactions on vol. 41, Issue 6, Jun. 2005 pp. 2199-2201 Digital Object Identifier 10.1109/TMAG.2005.847632.
Control of power-shuttle motion-inverter Savaresi, S.M.; Tanelli, M.; Bittanti, S.; Mangili, A.; Taroni, F.; Previdi, F.; American Control Conference, 2005. Proceedings of the 2005 Jun. 8-10, 2005 pp. 1010-1015 vol. 2 Digital Object Identifier 10.1109/ACC.2005.1470092.
Optimal and robust design of unstable valve Qinghui Yuan; Perry Li; American Control Conference, 2004. Proceedings of the 2004 vol. 5, Jun. 30-Jul. 2, 2004 pp. 4449-4452 vol. 5.
An experimental study on the use of unstable electrohydraulic valves for control Qinghui Yuan; Li, P.Y.; American Control Conference, 2002. Proceedings of the 2002 vol. 6, May 8-10, 2002 pp. 4843-4848 vol. 6 Digital Object Identifier 10.1109/ACC.2002.1025425.
On using unstable electrohydraulic valves for control Krishnaswamy, K.; Li, P.Y.; American Control Conference, 2000. Proceedings of the 2000 vol. 5, Jun. 28-30, 2000 pp. 3615-3619 vol. 5 Digital Object Identifier 10.1109/ACC.2000.879244.
Passivity properties and passification of electrohydraulic valves Li, P.Y.; American Control Conference, 2000. Proceedings of the 2000 vol. 6, Jun. 28-30, 2000 pp. 4108-4113 vol. 6 Digital Object Identifier 10.1109/ACC.2000.876994.
Prototype design and test results of a high temperature remote actuator controller Fong Shi; Martin, K.; High Temperature Electronics Conference, 1998. HITEC. 1998 Fourth International Jun. 14-18, 1998 pp. 1-4 Digital Object Identifier 10.1109/HITEC.1998.676750.
Online state and parameter estimation of an electrohydraulic valve for intelligent monitoring Khoshzaban, M.; Sassani, F.; Lawrence, P.D.; Advanced Intelligent Mechatronics '97., IEEE/ASME International Conference on Jun. 16-20, 1997 p. 141 Digital Object Identifier 10.1109/AIM.1997.653015.
An assessment of developing dual use electric actuation technologies for military aircraft and commercial application Blanding, D.E.; Energy Conversion Engineering Conference, 1997. IECEC-97. Proceedings of the 32nd Intersociety vol. 1, Jul. 27-Aug. 1, 1997 pp. 716-721 vol. 1 Digital Object Identifier 10.1109/IECEC.1997.659278.
Schottler Joseph J.
Stafney John C.
Holmes Michael B
Sauer-Danfoss Inc.
LandOfFree
Method of determining average current in a PWM drive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of determining average current in a PWM drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of determining average current in a PWM drive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4009289