Kiln control and upset recovery using a model predictive control in series with forward chaining
First Claim
1. A method for controlling a non-linear process, comprising the steps of:
- providing a controller that is operable to receive inputs representing measured variables of the process and predicting on an output of the controller predicted control values for manipulatible variables that control the process, which controller defines the parameters of operation for the prediction operation;
providing an expert system that models the actions of an operator of the process over an operating region of the process that represents a set of rules for actions to be taken by an operator upon the occurrence of one of a plurality of predetermined conditions in the operation of the process, which predetermined conditions each represent an upset in the operation of the process; and
modifying the operation of the controller with the expert system when one of the predetermined conditions exists such that the controller is re parameterized to take account of the upset to the non-linear process.
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Accused Products
Abstract
A method for controlling a non-linear process includes the steps of first providing a controller that is operable to receive inputs representing measured variables of the process and predicting on an output of the controller predicted control values for manipulatible variables that control the process. An expert system is provided that models the actions of an operator of the process over an operating region of the process that represents a set of rules for actions to be taken by an operator upon the occurrence of predetermined conditions in the operation of the process. The operation of the controller is modified with the expert system when one of the predetermined conditions exists.
36 Citations
19 Claims
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1. A method for controlling a non-linear process, comprising the steps of:
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providing a controller that is operable to receive inputs representing measured variables of the process and predicting on an output of the controller predicted control values for manipulatible variables that control the process, which controller defines the parameters of operation for the prediction operation;
providing an expert system that models the actions of an operator of the process over an operating region of the process that represents a set of rules for actions to be taken by an operator upon the occurrence of one of a plurality of predetermined conditions in the operation of the process, which predetermined conditions each represent an upset in the operation of the process; and
modifying the operation of the controller with the expert system when one of the predetermined conditions exists such that the controller is re parameterized to take account of the upset to the non-linear process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for controlling a non-linear cement kiln process that is operated on one of multiple fuel types, comprising the steps of:
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providing a controller that is operable to receive inputs representing measured variables of the process and predicting on an output of the controller predicted control values for manipulatible variables that control the process, which controller defines the parameters of operation for the prediction operation;
providing an expert system that models the actions of an operator of the process over an operating region of the process that represents a set of rules for actions to be taken by an operator upon the occurrence of termination of one type of fuel and substitution of another fuel type, which substitution represents an upset in the operation of the process; and
modifying the operation of the controller with the expert system when the substitution occurs such that the controller is re parameterized to take account of the substitution to the non-linear process. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification