METHOD FOR PERFORMING A PLAUSIBILITY CHECK FOR DETECTING A LOSS OF LOAD BEARING CAPACITY IN A SUSPENSION SYSTEM OF A VEHICLE
First Claim
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1. A computer-implemented method for performing a plausibility check for detecting a loss of load bearing capacity in at least one suspension strut of a suspension system of a chassis during its operation, wherein target-actual value comparisons are carried out between measured suspension displacements and evaluation variables calculated from the suspension displacements with predefined critical threshold variables, wherein the evaluation variables calculated from the suspension displacements include:
- a sum of the suspension displacements,an average value of the suspension displacements,a roll angle of a front axle of the chassis,a roll angle of a rear axle of the chassis,an average value of said roll angles,a pitch angle on the right side of the chassis,a pitch angle on the left side of the chassis,an average value of said pitch angles,an angle of rotation of the chassis about a diagonal axis formed by a left front wheel and a right rear wheel of the chassis,an angle of rotation of the chassis about a diagonal axis formed by a right front wheel and a left rear wheel of the chassis,or an average value of the angle of rotation about the diagonal axes,and wherein an identification signal for the possible existence of a loss of load bearing capacity is set in the case in which the predefined critical threshold values are exceeded or not attained.
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Abstract
The invention relates to a computer-implemented method for carrying out a plausibility check for recognizing a loss in load-bearing capacity in at least one suspension strut of a suspension system of a motor vehicle chassis during the operation of the chassis, wherein target-actual comparisons of measured suspension paths with evaluation parameters having predetermined critical threshold values calculated trom the suspension paths are performed, and wherein in the event that the predetermined critical threshold values are exceeded or not attained, a recognition signal is set for a possible loss in load-bearing capacity.
4 Citations
9 Claims
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1. A computer-implemented method for performing a plausibility check for detecting a loss of load bearing capacity in at least one suspension strut of a suspension system of a chassis during its operation, wherein target-actual value comparisons are carried out between measured suspension displacements and evaluation variables calculated from the suspension displacements with predefined critical threshold variables, wherein the evaluation variables calculated from the suspension displacements include:
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a sum of the suspension displacements, an average value of the suspension displacements, a roll angle of a front axle of the chassis, a roll angle of a rear axle of the chassis, an average value of said roll angles, a pitch angle on the right side of the chassis, a pitch angle on the left side of the chassis, an average value of said pitch angles, an angle of rotation of the chassis about a diagonal axis formed by a left front wheel and a right rear wheel of the chassis, an angle of rotation of the chassis about a diagonal axis formed by a right front wheel and a left rear wheel of the chassis, or an average value of the angle of rotation about the diagonal axes, and wherein an identification signal for the possible existence of a loss of load bearing capacity is set in the case in which the predefined critical threshold values are exceeded or not attained. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A checking device for performing a plausibility check for detecting a loss of load bearing capacity in at least one suspension strut of a suspension system of a chassis during its operation, which is designed to carry out target-actual value comparisons between measured suspension displacements and evaluation variables calculated from the suspension displacements (100, 102, 104, 106) with predefined critical threshold variables, wherein the evaluation variables calculated by the suspension displacements include:
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a sum of the suspension displacements, an average value of the suspension displacements, a roll angle of a front axle of the chassis, a roll angle of a rear axle of the chassis, an average value of said roll angles, a pitch angle on the right side of the chassis, a pitch angle on the left side of the chassis, an average value of said pitch angles, an angle of rotation of the chassis about a diagonal axis formed by a left front wheel and a right rear wheel of the chassis, an angle of rotation of the car plant about a diagonal axis formed by a right front wheel and a left rear wheel of the chassis, or an average value of the angle of rotation about the diagonal axes, and wherein an identification signal for the possible existence of a loss of load bearing capacity is set in the case in which the predefined critical threshold values are exceeded or not attained.
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Specification
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Current AssigneeContinental Teves AG & Co. OHG (Continental AG)
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Original AssigneeContinental Teves AG & Co. OHG (Continental AG)
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InventorsHoinkhaus, Hermann
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current701/34.4
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CPC Class CodesB60G 17/0155 pneumatic unitB60G 17/016 characterised by their resp...B60G 17/0185 for failure detectionB60G 17/0521 the spring having a flexibl...B60G 2400/0511 Roll angleB60G 2400/0512 Pitch angleB60G 2400/0513 Yaw angleB60G 2400/252 verticalB60G 2400/5122 Fluid springB60G 2400/61 Load distributionB60G 2600/02 Retarders, delaying means, ...B60G 2600/04 Means for informing, instru...B60G 2600/08 Failure or malfunction dete...B60G 2600/12 Sampling or average detecti...B60G 2800/702 Improving accuracy of a sen...B60G 2800/80 Detection or control after ...
