Process model error correction method and system
First Claim
1. A computer-implemented method for a virtual sensor system, comprising:
- establishing a first process model indicative of interrelationships between a plurality of input parameters and a plurality of output parameters;
establishing a second process model indicative of interrelationships between at least the plurality of input parameters and modeling errors of the first process model;
operating the first process model to generate values of the plurality of output parameters based on the interrelationships between the plurality of input parameters and the plurality of output parameters;
simultaneously operating the second model to generate estimated deviations between the values of the plurality of output parameters and desired values of the plurality of output parameters based on the interrelationships between at least the plurality of input parameters and the modeling errors of the first process model;
compensating the values of the plurality of output parameters from the first process model with the estimated deviations from the second process model to generate the desired values of the plurality of output parameters; and
providing the desired values of the plurality of output parameters to a control system to control a machine.
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Abstract
A method is provided for a virtual sensor system. The method may include establishing a first process model indicative of interrelationships between a plurality of input parameters and a plurality of output parameters and establishing a second process model indicative of interrelationships between at least the plurality of input parameters and modeling errors of the first process model. The method may also include operating the first process model to generate values of the plurality of output parameters and simultaneously operating the second model to generate estimated deviations between the values of the plurality of output parameters and desired values of the plurality of output parameters. Further, the method may include compensating the values of the plurality of output parameters with the estimated deviations to generate the desired values of the plurality of output parameters.
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Citations
21 Claims
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1. A computer-implemented method for a virtual sensor system, comprising:
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establishing a first process model indicative of interrelationships between a plurality of input parameters and a plurality of output parameters; establishing a second process model indicative of interrelationships between at least the plurality of input parameters and modeling errors of the first process model; operating the first process model to generate values of the plurality of output parameters based on the interrelationships between the plurality of input parameters and the plurality of output parameters; simultaneously operating the second model to generate estimated deviations between the values of the plurality of output parameters and desired values of the plurality of output parameters based on the interrelationships between at least the plurality of input parameters and the modeling errors of the first process model; compensating the values of the plurality of output parameters from the first process model with the estimated deviations from the second process model to generate the desired values of the plurality of output parameters; and providing the desired values of the plurality of output parameters to a control system to control a machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer system, comprising:
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a database configured to store information relevant to a virtual sensor system; and a processor configured to; operate a first process model to generate values of a plurality of output parameters based on the interrelationships between a plurality of input parameters and the plurality of output parameters; simultaneously operate a second model to generate estimated deviations between the values of the plurality of output parameters and desired values of the plurality of output parameters based on the interrelationships between at least the plurality of input parameters and modeling errors of the first process model; compensate the values of the plurality of output parameters from the first process model with the estimated deviations from the second process model to generate the desired values of the plurality of output parameters; and provide the desired values of the plurality of output parameters to a control system to control a machine. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A computer-readable medium for use on a computer system, the computer-readable medium having computer-executable instructions for performing a method comprising:
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establishing a first process model indicative of interrelationships between a plurality of input parameters and a plurality of output parameters; establishing a second process model indicative of interrelationships between at least the plurality of input parameters and modeling errors of the first process model; operating the first process model to generate values of the plurality of output parameters based on the interrelationships between the plurality of input parameters and the plurality of output parameters; simultaneously operating the second model to generate estimated deviations between the values of the plurality of output parameters and desired values of the plurality of output parameters based on the interrelationships between at least the plurality of input parameters and the modeling errors of the first process model; compensating the values of the plurality of output parameters from the first process model with the estimated deviations from the second process model to generate the desired values of the plurality of output parameters; and providing the desired values of the plurality of output parameters to a control system to control a machine. - View Dependent Claims (19, 20, 21)
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Specification