Method for diagnosing a component of a vehicle
First Claim
1. A method for diagnosing a component of a vehicle and comprising the steps of:
- identifying a series of classes, each of which is associated to a given mode of operation of the component;
identifying at least one control signal of the component;
providing a mathematical model of the component designed to classify an evolution in time of the control signal, assigning a respective class to the evolution in time of the control signal itself;
detecting a number of evolutions in time of the control signal;
classifying each evolution in time of the control signal by means of the mathematical model of the component; and
determining a diagnosis of the component on the basis of the classification of the evolutions in time of the control signal.
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Abstract
A method for diagnosing a component of a vehicle, which presents the steps of: identifying a series of classes, each of which is associated to a given mode of operation of the component; identifying at least one control signal of the component; providing a mathematical model of the component designed to classify an evolution in time of the control signal, assigning a respective class to the evolution in time of the control signal itself; detecting a number of evolutions in time of the control signal; classifying each evolution in time of the control signal by the mathematical model of the component; and determining a diagnosis of the component on the basis of the classification of the evolutions in time of the control signal.
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Citations
39 Claims
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1. A method for diagnosing a component of a vehicle and comprising the steps of:
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identifying a series of classes, each of which is associated to a given mode of operation of the component; identifying at least one control signal of the component; providing a mathematical model of the component designed to classify an evolution in time of the control signal, assigning a respective class to the evolution in time of the control signal itself; detecting a number of evolutions in time of the control signal; classifying each evolution in time of the control signal by means of the mathematical model of the component; and determining a diagnosis of the component on the basis of the classification of the evolutions in time of the control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for diagnosing a component of a vehicle and comprising the steps of:
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identifying a number of input signals of the component and a number of output signals of the component; providing a mathematical model of the component in normal operation, which, as a function of the values of the input signals, is able to supply the values of the output signals; measuring the actual values of the input signals; measuring the actual values of the output signals; determining the estimated values of the output signals using the mathematical model of the component and the actual values of the input signals; comparing the estimated values of the output signals with the respective actual values of the output signals; and determining a diagnosis of the component on the basis of the comparison between the estimated values of the output signals and the actual values of the output signals. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method for diagnosing a clutch of a vehicle, which mechanically connects a crankshaft (6) of an internal-combustion engine (5) to a primary shaft (13) of a gear change (12);
- the diagnostic method comprising the steps of;
detecting the velocity (ω
m) of rotation of the crankshaft (6);detecting the velocity (ω
1) of rotation of the primary shaft (13) of the gear change (12);determining the difference (Δ
ω
) of velocity between the velocity (ω
m) of rotation of the crankshaft (6) and the velocity (ω
1) of rotation of the primary shaft (13) of the gear change (12) when the velocity (ω
m) of rotation of the crankshaft (6) is higher than a first threshold value and the torque supplied by the internal-combustion engine (5) is higher than a second threshold value; anddetermining a diagnosis of the clutch (15) on the basis of the difference (Δ
ω
) of velocity. - View Dependent Claims (38, 39)
- the diagnostic method comprising the steps of;
Specification