Machine learning method and machine learning device for learning fault conditions, and fault prediction device and fault prediction system including the machine learning device
First Claim
1. A machine learning device configured to learn a condition associated with a fault of an industrial machine, the machine learning device comprising:
- a memory; and
at least one processor coupled to the memory, the at least one processor being configured to;
while the industrial machine is in operation or at rest, obtain a state variable including at least one ofoutput data from a sensor configured to detect a state of one of the industrial machine and a surrounding environment,internal data of control software controlling the industrial machine, andcomputational data obtained based on one of the output data and the internal data;
obtain determination data indicating a fault of the industrial machine, andlearn the condition associated with the fault of the industrial machine in accordance with a training data set including a combination of the state variable and the determination data, whereinthe fault of the industrial machine is predicted in accordance with the learned condition, andthe at least one processor is further configured to update the condition by weighting each of the determination data comprised in the training data set, in accordance with a length of time from when each of the determination data is obtained until the fault actually occurs.
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Accused Products
Abstract
A fault prediction system includes a machine learning device that learns conditions associated with a fault of an industrial machine. The machine learning device includes a state observation unit that, while the industrial machine is in operation or at rest, observes a state variable including, e.g., data output from a sensor, internal data of control software, or computational data obtained based on these data, a determination data obtaining unit that obtains determination data used to determine whether a fault has occurred in the industrial machine or the degree of fault, and a learning unit that learns the conditions associated with the fault of the industrial machine in accordance with a training data set generated based on a combination of the state variable and the determination data.
21 Citations
17 Claims
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1. A machine learning device configured to learn a condition associated with a fault of an industrial machine, the machine learning device comprising:
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a memory; and at least one processor coupled to the memory, the at least one processor being configured to; while the industrial machine is in operation or at rest, obtain a state variable including at least one of output data from a sensor configured to detect a state of one of the industrial machine and a surrounding environment, internal data of control software controlling the industrial machine, and computational data obtained based on one of the output data and the internal data; obtain determination data indicating a fault of the industrial machine, and learn the condition associated with the fault of the industrial machine in accordance with a training data set including a combination of the state variable and the determination data, wherein the fault of the industrial machine is predicted in accordance with the learned condition, and the at least one processor is further configured to update the condition by weighting each of the determination data comprised in the training data set, in accordance with a length of time from when each of the determination data is obtained until the fault actually occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A machine learning method of learning a condition associated with a fault of an industrial machine, the method comprising:
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while the industrial machine is in operation or at rest, obtaining a state variable including at least one of output data from a sensor configured to detect a state of one of the industrial machine and a surrounding environment, internal data of control software controlling the industrial machine, and computational data obtained based on one of the output data and the internal data; obtaining determination data indicating a fault of the industrial machine; and learning the condition associated with the fault of the industrial machine in accordance with a training data set including a combination of the state variable and the determination data, wherein the fault of the industrial machine is predicted in accordance with the learned condition, and the learning the condition associated with the fault of the industrial machine further comprises; updating the condition by weighting each of the determination data comprised in the training data set, in accordance with a length of time from when each of the determination data is obtained until the fault actually occurs. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification