System, method, vehicle, ECU, computer program and computer program product
First Claim
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1. A system for estimating the speed of a vehicle, wherein the vehicle comprises a vehicle assembly, a first wheel and a second wheel on the assembly;
- the system comprising;
a first measuring device operable to determine a first parameter based on a rotational speed of the first wheel, and an estimating device operable to estimate the speed of the vehicle (vestimate) using the first parameter;
a second measuring device operable to determine a second parameter based on a rotational speed of the second wheel; and
a difference detector to identify any difference between the first and second parameters and to adjust the estimate of the speed of the vehicle based on the difference identified.
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Abstract
System for estimating the speed of a vehicle by determining a first parameter based on the rotational speed of a first set of wheels of the vehicle, such as its drive wheels, and to estimate the speed of the vehicle (vestimate) using the first parameter, determining a second parameter based on the rotational speed of a second set of wheels of the vehicle, identifying any difference between the first and second parameters and from that determining the actual speed, indicating the actual speed and controlling the actual speed to a maximum.
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Citations
29 Claims
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1. A system for estimating the speed of a vehicle, wherein the vehicle comprises a vehicle assembly, a first wheel and a second wheel on the assembly;
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the system comprising;
a first measuring device operable to determine a first parameter based on a rotational speed of the first wheel, and an estimating device operable to estimate the speed of the vehicle (vestimate) using the first parameter;
a second measuring device operable to determine a second parameter based on a rotational speed of the second wheel; and
a difference detector to identify any difference between the first and second parameters and to adjust the estimate of the speed of the vehicle based on the difference identified. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 29)
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13. A method for estimating the speed of a vehicle comprising:
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determining a first parameter based on a rotational speed of a first wheel of a vehicle, and estimating the speed of the vehicle (vestimate) using the first parameter, determining a second parameter based on a rotational speed of a second wheel of the vehicle, identifying any difference between the first and the second parameters and adjusting the estimate of the speed of the vehicle based on the difference identified. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 28)
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22. A software application for estimating a vehicle speed comprising:
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first program code operable to estimate a first parameter based on a rotational speed of a first wheel, to enable a vehicle speed estimate (vestimate) to be obtained;
second program code operable to estimate a second parameter based on the rotational speed of a second wheel of the vehicle; and
third program code operable to identify any difference between the first and the second parameters and to adjust the vehicle speed estimate based on the difference identified. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification