Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Reexamination Certificate
2006-04-18
2006-04-18
Camby, Richard M. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
C180S446000
Reexamination Certificate
active
07031813
ABSTRACT:
An electric steering control device is provided which is capable of enabling the driver to perform steering manipulation stably without being substantially affected by the ambient temperature and the heat generation of the control device. The control device comprises a temperature sensor for detecting the temperature of a circuit board mounting a motor drive circuit thereon and a compensation section for compensating an electric current command value based on the board temperature detected by the temperature sensor, so that en electric motor for exerting an assist force on a vehicle steering mechanism is driven by the compensated electric current command value output from a motor drive circuit. Therefore, the steering operation can be done stably without being substantially affected by the ambient temperature and the heat generation of the control device. In particular, since the temperature sensor is arranged not on the motor drive circuit per se but on a circuit board mounting the motor drive circuit thereon, the freedom can be heightened in arranging the temperature sensor. Further, since the temperature sensor for heat control of a spiral cable provided on the electric motor is utilized also for compensation of the electric current command value, the components for the control device can be reduced in number.
REFERENCES:
patent: 6326753 (2001-12-01), Someya et al.
patent: 6334503 (2002-01-01), Fukumura et al.
patent: 6520279 (2003-02-01), Fukumoto et al.
patent: 6564136 (2003-05-01), Asumi et al.
patent: 6564139 (2003-05-01), Sakakiyama
patent: 6859693 (2005-02-01), Tamagawa et al.
patent: 6860361 (2005-03-01), Takatsuka et al.
patent: 6902028 (2005-06-01), Takatsuka et al.
patent: 2002/0014877 (2002-02-01), Kaji et al.
patent: 199 02 516 (1999-08-01), None
patent: 1 120 805 (2001-08-01), None
patent: 2001-253357 (2001-09-01), None
patent: 2002-53050 (2002-02-01), None
patent: 2002-136182 (2002-05-01), None
Eki Hirozumi
Kawamuro Junji
Kodama Kazumasa
Kojo Takahiro
Nakatsu Masatoshi
Camby Richard M.
Toyoda Koki Kabushiki Kaisha
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Electric steering control device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric steering control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric steering control device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3606717