US 5,494,344 A · Cornering identification method

Abstract

In a cornering identification method which, in particular, is provided for automotive vehicles with anti-lock control or traction slip control, the rotating velocities of the two wheels of the one (non-driven) axle are measured and a correction value is continuously determined for the difference in the rolling circumferences of the tires of the two wheels. A reference value (THR) is developed which is representative of a straight-line course and, in accordance with a predetermined time pattern, this reference value is continuously corrected in dependence on the velocity difference of the two wheels. For cornering identification, a velocity difference value (DIF) is compared with the reference value (THR). At the beginning, i.e., after the start of cornering identification, the reference value (THR) will be corrected in relatively short periods which will be prolonged as the ride goes on. The rate of change (.DELTA. THR) of the reference value (THR) is likewise high at the beginning, decreasing thereafter.

Claims38

Dependent claims

A method for evaluating signals representative of wheel rotational behavior to identify cornering of an automotive vehicle with anti-lock and/or traction slip control, said method comprising the steps of measuring rotating velocities of two wheels of one axle;

continuously detecting a correction value which depends on a difference in the rotating velocities of the wheels;
where with the correction value being taken into account, a velocity difference of the two wheels is detected, and where the velocity difference is evaluated for cornering identification, characterized in that a reference value is formed which is representative of a straight-line course;
in that, in accordance with a predetermined time pattern or time grid, the reference value is continuously corrected in dependence on the velocity difference;
in that, for cornering identification, the velocity difference or a difference value representative of the velocity difference is compared with a momentary value of the reference value;
and the identification of cornering is used by the anti-lock and/or traction slip control to influence wheel rotational behavior.

2 more elements

Dependencies are inferred from the claim text.

Cornering identification method

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Cornering identification method

Life of this patent

Abstract

Claims38