Method and device for recognizing cornering and for stabilizing a vehicle in case of over-steered cornering
AssigneeContinental Teves AG & Co. oHG
InventorsIvica Batistic, Holger Schmidt
Life of this patent
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Abstract
Methods and devices for detecting cornering and in particular over-steered cornering as well as a method and a device for stabilising a vehicle in case of an over-steered cornering manoeuvre are described. The detection can be carried out with reference to wheel slip values and/or transverse acceleration values. The stabilisation is carried out upon detection of the over-steered cornering manoeuvre by means of suitable interventions in the brake system.
Claims59
Method for detecting cornering which includes the following steps
- determination of the wheel speeds of several wheels and
- determination of the slip of these wheels,
- characterised by
- detecting a cornering manoeuvre with reference to several of the determined slip values.
Method according to anyone of the preceding claims, characterised by that a left curve is detected if one or more of the following conditions are met:
- Shl−S0>=shr−S0,
- Svl−S0>0,
- Svr−S0=0,
- and that a right curve is detected if one or more of the following conditions are met at the same time:
- Shr−S0>=Shl−S0,
- Svr−S0>0,
- Svl−S0=0,
- Shl being the slip on the left rear wheel,
- Shr being the slip on the right rear wheel
- Svl being the slip on the left front wheel
- Svr being the slip on the right front wheel, and
- S0 being the slip correction value.
Method according to any one of the preceding claims, characterised by that a left curve is considered as completed, if at least one of the following conditions is met:
- Shl−S0<Shr−S0,
- Shl−S0>0,
- and that a right curve is considered as completed, if at least one of the following conditions is met:
- Shr−S0<Shl−S0,
- Shr−S0=0,
- Shl being the slip on the left rear wheel,
- Shr being the slip on the right rear wheel, and
- S0 being the slip correction value.
Method for detecting an over-steered cornering manoeuvre including the following steps
- determination of the wheel speeds of several wheels and
- determination of the slip of these wheels,
- characterised by
- detecting an over-steered cornering manoeuvre with reference to several of the determined slip values.
Method for detecting an over-steered cornering manoeuvre including the following steps
- determination of the wheel speed of several wheels,
- characterised by
- determination of the transverse acceleration for the front and the rear axle, and
- determination of an over-steered cornering with reference to the determined transverse accelerations.
Device for detecting cornering with a first detecting device (111-114) to determine the wheel speeds of several wheels, and a second detecting device (302a-d) to determine the slip of said wheels,
- characterised by
- a first detecting device (300) for detecting cornering with reference to several of the determined slip values.
Device according to any one of the preceding claims, characterised by that the first detection device (300) detects a left-hand curve, if one or more of the following conditions are met:
- Shl−S0>=Shr−S0,
- Svl−S0>0,
- Svr−S0=0,
- and a right-hand curve, if one or (more of the following conditions are met at the same time:
- Shr−S0>=Shl−S0,
- Svr−S0>0,
- Svl−S0=0
- Shl being the slip on the left rear wheel,
- Shr being the slip on the right rear wheel,
- Svl being the slip on the left front wheel,
- Svr being the slip on the right front wheel, and
- S0 being a slip correction value.
Device according to anyone of the precedent claims, characterised by that the first detection device (300) considers a left-hand curve as completed, if at least one of the following conditions is met:
- Shl−S0<Shr−S0;
- Shl−S0=0
- and considers a right-hand curve as completed, if at least one of the following conditions is met:
- Shr−S0<Shl−S0
- Shr−S0=0,
- Shl being the slip on the left rear wheel,
- Shr being the slip on the right rear wheel, and
- S0 being the slip correction value.
Device for detecting an over-steered cornering manoeuvre including
- a first detecting device (111-114) for detecting the wheel speeds of several wheels, and
- a second detecting device (302a-d) for detecting the slip of said wheels,
- characterised by
- a second detecting device (400) for detecting an over-steered cornering with reference to several of the determined slip values.
Device for detecting an over-steered cornering including at least one detecting device (111-114) for detecting the wheel speeds of several wheels,
- characterised by
- a fourth detecting device (501, 502) for detecting the transverse acceleration for the front and the rear axle, and
- a third detecting device (500) for detecting an over-steered cornering with reference to the determined transverse accelerations.
Device according to claim 81, characterised by a selection device (600) selecting the output of the second detecting device (400), if relatively low transverse accelerations or wheel slip values are determined, and failing this, selecting the output of the third detecting device (500).
Device according to claim 82, characterised by a device (604) producing a test value according to one or several transverse acceleration values or one or several wheel slip values, the test value being compared with a threshold value.
Device according to any one of the claims 81 to 84, characterised by that the device according to any one of the claims 39 to 47 and the device according to any one of the claims 48 to 54 are combined in such a way that identical components are foreseen only once and used in common.
Dependencies are inferred from the claim text.