Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Patent
1998-09-11
2000-10-17
Cuchlinski, Jr., William A.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
701 80, 180410, 180421, A01B 6900
Patent
active
061344915
ABSTRACT:
A system for controlling steering of a vehicle, including a steering unit having an electric motor which steers driven wheels of the vehicle, a first steering control unit (EPS ECU 76) for controlling the actuator, a CCD camera for detecting a condition of a lane on a road on which the vehicle travels, a steering assist torque determining unit for determining a steering assist torque necessary for holding a positional relationship between the vehicle and the lane condition, a torque sensor for detecting a steering torque manually applied to the steering unit by the driver, second steering control unit for calculating a torque command to be output to the first steering control unit based on the steering assist torque calculated by the steering assist torque calculating unit and the detected steering torque to control the motor such that the torque command decreases. In the system, a failure detecting unit is provided for detecting whether a failure has occurred at least in determination of the steering assist torque, and the control by the second control unit is discontinued, or is switched to the control by the first control unit when the failure is detected, thereby enabling to detect or discriminate the occurrence of failure with accuracy and to take a necessary countermeasure to cope with the failures condition.
REFERENCES:
patent: 4782907 (1988-11-01), Morishita et al.
patent: 5652487 (1997-07-01), Nishino et al.
patent: 6018691 (2000-01-01), Yamamoto et al.
Ishida Shinnosuke
Kawagoe Hiroyuki
Matsuno Kaoru
Teramoto Tomoaki
Arthur Gertrude
Cuchlinski Jr. William A.
Honda Giken Kogyo Kabushiki Kaisha
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