Method and apparatus of predicting a fault condition
First Claim
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1. An apparatus for predicting a fault condition, comprising:
- a machine having a plurality of parameters being dependent upon machine performance;
a sensor connected to the machine and adapted to produce an electrical signal in response to one of the plurality of machine parameters;
means for producing a data trend of the parameter in response to the electrical signal;
means for calculating a confidence value of the machine parameter, the confidence value representing the degree of certainty that a failure has been detected;
means for assigning a weight to the machine parameter, the weight representing the degree of certainty that the machine parameter is the root cause of the failure;
means for multiplying the confidence value by the associated weight of the parameter value; and
means for comparing the overall confidence value to a plurality of limit values where each limit value is associated with a particular parameter, and determining the cause of the failure in response to the overall confidence value corresponding to a particular set of limit values.
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Abstract
An apparatus for predicting a fault condition for a machine is disclosed. The machine has a plurality of parameters being dependent upon machine performance. A sensor connected to the machine produces an electrical signal in response to one of the plurality of machine parameters. A computer produces a data trend of the parameter in response to the electrical signal, calculates the duration and slope of the trend, and predicts the time period in which the trend will exceed the warning level.
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6 Claims
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1. An apparatus for predicting a fault condition, comprising:
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a machine having a plurality of parameters being dependent upon machine performance; a sensor connected to the machine and adapted to produce an electrical signal in response to one of the plurality of machine parameters; means for producing a data trend of the parameter in response to the electrical signal; means for calculating a confidence value of the machine parameter, the confidence value representing the degree of certainty that a failure has been detected; means for assigning a weight to the machine parameter, the weight representing the degree of certainty that the machine parameter is the root cause of the failure; means for multiplying the confidence value by the associated weight of the parameter value; and means for comparing the overall confidence value to a plurality of limit values where each limit value is associated with a particular parameter, and determining the cause of the failure in response to the overall confidence value corresponding to a particular set of limit values. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification