Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2005-07-05
2005-07-05
Nguyen, Tan Q. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C701S042000, C701S043000, C180S422000, C180S445000
Reexamination Certificate
active
06915194
ABSTRACT:
The terminal voltages of respective phase coils of a steering shaft driving motor constituted by a three-phase brushless motor are separately detected. When the terminal voltages detected at at least three different conducting terminals u, v, and w are made Vu, Vv, and Vw, respectively, and the values when those detected values Vu, Vv, and Vw are arranged in order from largest to smallest voltage are made V1, V2, and V3, respectively, provided that V1≧V2≧V3, a calculation is performed to determine if V1+V3coincides with 2*V2within a predetermined allowable range, and a failure is determined based on results obtained from such a calculation.
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Kodama Kazumasa
Miyata Masahiro
Nguyen Tan Q.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toyoda Koki Kabushiki Kaisha
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