Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2009-07-08
2011-11-01
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400010, C318S464000, C318S720000, C318S436000, C318S430000, C318S431000, C318S400060, C318S400110, C318S400140, C318S400170, C318S400330, C318S400380, C318S400390, C318S809000, C318S810000
Reexamination Certificate
active
08049446
ABSTRACT:
A motor control device includes a dq-axis current control unit for generating a dq-axis voltage reference based on a dq-axis current reference and a dq-axis current signal, an initial magnetic pole position estimation unit for estimating a magnetic pole position of the motor upon power-on to generate a magnetic pole position signal, and a magnetic pole position estimation precision confirming unit for supplying a current in a d-axis direction after generation of the magnetic pole position signal with the initial magnetic pole position estimation unit, and checking an error of the magnetic pole position signal based on an angle of movement of the motor.
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Ditthavong Mori & Steiner, P.C.
Kabushiki Kaisha Yaskawa Denki
Leykin Rita
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