US 6,650,986 B1Granted

Automotive vehicle control system

AssigneeContinental Teves AG & Co. oHG

InventorsJochen Burgdorf, Helmut Fennel, Peter Lohberg

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Abstract

The present invention relates to an automotive vehicle control system, preferably comprising a control logic with at least two control functions, such as ABS and YTC functions, with a tire sensor (tire wall torsion sensor or SWT), i.e., with at least one pick-up for measuring data fitted stationarily on the vehicle body, e.g. a spring strut of a vehicle wheel, and cooperating with at least one encoder applied to the tire wall and co-rotating with the wheel or tire, and with at least one conventional rotational speed sensor that is mounted on the wheel, for example, on the wheel bearing, and includes a measuring data emitter and a pick-up for measuring data, wherein the output information or output signals of the tire sensor and the at least one conventional sensor are correlated and evaluated in an electronic evaluating circuit of the control system to determine vehicle condition variables by means of forces that act on the individual wheels and tires.

Claims12

Dependent claims

A method of operating an automotive vehicle control system, said vehicle control system of the type including an electronic evaluating circuit with at least two control functions, a plurality of tires, wherein each tire includes a tire sensor with at least one corresponding pick-up and wherein each tire also includes at least one encoder applied to a wall of the tire, and at least one conventional rotational speed sensor mounted on each wheel of each tire, wherein an output signal of the tire sensor and an output signal of the at least one conventional sensor are correlated and evaluated in said electronic evaluating circuit to determine vehicle condition variables by the forces that act on the individual wheels and tires, comprising the steps of:

A) collecting the output signals of at least one of the tire sensors and of at least one of the conventional wheel speed sensors,
B) testing the output signals of the at least one tire sensor and of the at least one conventional sensor for correctness with respect to the output signals of one or more of the remaining conventional sensors and tire sensors in order to determine an accurate representation of the actual vehicle's wheel rotational speeds, and
C) detecting, within a predetermined period, a deviation beyond a predetermined threshold between the at least one tire sensor signal and the at least one conventional sensor signal,
D) using the at least one tire sensor signal or the at least one conventional sensor signal to generate one or more correction factors for correcting the output signals of one or more of the remaining conventional sensors and time sensors or for correcting vehicle condition variables derived therefrom, and
adapting a control logic based upon the corrected output signals.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/890,707Filed 2 Nov 2001
Priority: DE 199 04 8185 Feb 1999
Granted: 18 Nov 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B60T 8/1755
Using electrical or electronic regulation means to control braking: brake regulation specially adapted to control the stability of the vehicle,…
B60T 8/1725
Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters: using tyre sensors, e.g.…
B60T 8/329
Deceleration: systems characterised by their speed sensor arrangements
B60T 8/56
Responsive to a speed condition, e.g. acceleration or deceleration: having means for changing the coefficient of friction