Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2008-06-03
2008-06-03
Tran, Dalena (Department: 3664)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C363S009000
Reexamination Certificate
active
07383110
ABSTRACT:
A motor control device is provided, wherein an electric power (P) consumed by the brushless DC motor is inferred from three parameters including motor phase currents (I) flowing through at least two phases of three phases of the brushless DC motor, motor phase voltages (V) applied to at least two phases which of the three phases, are the same in phase as the motor phase currents (I) flowing through the two phases, and a motor rotational angle (θ). Then, the value of a power supply current (Ib) supplied to the three-phase inverter is inferred based on the electric power (P) inferred to be consumed by the brushless DC motor and the power supply voltage (Vb) applied to a three-phase inverter. In accordance a flow chart shown inFIG. 3, the consumed electric power (P) is inferred by an expression (1) at step337, the power supply current (Ib) is inferred by an expression (2) at step338, and the inferred power supply current (Ib) is output to make it possible to detect the overcurrent supplied to the three-phase inverter.
REFERENCES:
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patent: 6687590 (2004-02-01), Kifuku et al.
patent: 6700343 (2004-03-01), Masaki et al.
patent: 6838844 (2005-01-01), Shimizu et al.
patent: 7136733 (2006-11-01), Liu et al.
patent: 2004-32848 (2004-01-01), None
JTEKT Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Tran Dalena
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