Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2008-08-06
2011-12-27
Masih, Karen (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S400200, C318S560000
Reexamination Certificate
active
08084977
ABSTRACT:
A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque current value such that the motor speed is made to follow a specified motor speed value fed from outside; a resonance filter producing a corrected torque current value by receiving a control value that varies with variations in the load torque and emphasizing a periodic variation component of the control value; a torque current corrector producing a specified superimposed torque current value by superimposing the corrected torque current value on the specified torque current value; and an adjusting portion adjusting, based on the specified superimposed torque current value, the phase of the corrected torque value by controlling the resonance filter. The vector control is performed according to the specified superimposed torque current value.
REFERENCES:
patent: 2001/0002097 (2001-05-01), Tsutsui
patent: 2001268963 (2001-09-01), None
patent: 2003329285 (2003-11-01), None
patent: 2006-180605 (2006-07-01), None
patent: 2006-191737 (2006-07-01), None
patent: 2006191737 (2006-07-01), None
Japanese Office Action, dated Jul. 21, 2009; English translation included.
Yasuo Notohara et al.; “Reduction Control Method of Periodic Torque Disturbance for Compressor”; 2004 Annual Conference of the Industry Applications Society of the Institute of Electrical Engineers of Japan; 1-57 (I-337-I-340); Sep. 14, 2004.
Hida et al.; “Position Sensorless Vector Control for Permanent Magnet Synchronous Motors Based on Maximum Torque Control Frame”; Industry Applications Society of the Institute of Electrical Engineers of Japan; included in Collection of the Lecture Treatises at 2006 Annual Conference of the Industry Applications Society of the Institute of Electrical Engineers of Japan; pp. 385-388 (I-385-I-388); Aug. 2006.
Corresponding Chinese Office Action, dated May 10, 2010; English translation included.
Masih Karen
NDQ&M Watchstone LLP
SANYO Electric Co., Ltd.
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