Device for determining a steering angle of a motor vehicle

Details Device for determining a steering angle of a motor vehicle Device for determining a steering angle of a motor vehicle

1998-09-03

2000-12-19

Cuchlinski, Jr., William A

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

32420711, 32420723, 341 15, B62D 1502

Patent

active

061637467

ABSTRACT:
The device for determining a steering angle of a motor vehicle with a steering column, a steering mechanism and a steering tie rod includes a device for generating a fine signal according to an angular position of the steering wheel, a device for generating a coarse signal according to a number of revolutions through which the steering column has been turned in one or the other direction, and a device for combining the fine signal and the coarse signal to obtain the steering angle. An essential simplification and improvement of the arrangement is obtained when the fine signal device includes a permanent magnet having a permanent magnetic field and rigidly attached to the steering column so that the permanent magnet rotates with the steering column and a sensor for a magnetic field direction of the permanent magnetic field from the permanent magnet, and the coarse signal device connected with the steering tie rod determines the steering tie rod motion direction and steering tie rod displacement over at least a portion of an entire displacement range of the steering tie rod without contact with it and produces a digital output signal according to the steering tie rod displacement and motion direction.

REFERENCES:
patent: 5434784 (1995-07-01), Bradley et al.
patent: 5568048 (1996-10-01), Schroeder et al.
patent: 5646523 (1997-07-01), Kaiser et al.
patent: 5825178 (1998-10-01), Hipp et al.
patent: 5880586 (1999-03-01), Dukart et al.
Patent Abstract of Japan vol. 012, No. 411 (P-779), Oct. 31, 1988 & JP 63 148102 A (Matsushita Electric Ind Co. Ltd), Jun. 21, 1988.

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