Online integration of model-based optimization and model-less control
AssigneeRockwell Automation Technologies, Inc.
InventorsBijan Sayyarrodsari, Kadir Liano, Alexander B. Smith
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Abstract
In certain embodiments, a control system includes a model-less controller configured to control operation of a plant or process. The control system also includes a model-based controller that includes a model of the plant or process being controlled by the model-less controller. The model-based controller is configured to modify parameters of the model-less controller.
Claims20
A control system comprising:
- a model-less controller configured to determine a manipulated variable of an industrial plant or process based at least in part on a tuning parameter of the model-less controller without use of any models that model operation of the industrial plant or process;
- and
- an automation controller communicatively coupled to the model-less controller, wherein the automation controller is configured to:
- determine a model configured to model operation of the industrial plant or process;
- and
- execute an explicit optimization procedure to determine a trajectory of the tuning parameter over a prediction horizon based at least in part on the model.
An industrial system comprising:
- a model-based controller configured to:
- determine a model configured to model operation of the industrial system;
- and
- perform an explicit optimization procedure during the operation of the industrial system based at least in part on the model to determine a trajectory of a tuning parameter over a prediction horizon;
- and
- a model-less controller communicatively coupled to the model-based controller, wherein the model-less controller is configured to:
- determine a manipulated variable of the industrial system based at least in part on the trajectory of the tuning parameter without using the model;
- and
- instruct the industrial system to implement the manipulated variable during a single time step in the prediction horizon to control operation of the industrial system.
A tangible, non-transitory, computer-readable medium configured to store instructions executable by one or more processors communicatively coupled to an industrial system, wherein the instructions comprise instructions to:
- determine, using the one or more processors, a first trajectory of a tuning parameter over a first prediction horizon by performing a first explicit optimization procedure based at least in part on a model that describes operation of the industrial system;
- determine, using the one or more processors, a first value of a manipulated variable based at least in part on the first trajectory of the tuning parameter without explicitly using the model;
- and
- instruct, using the one or more processors, the industrial system to implement the first value of the manipulated variable during a first time step in the first prediction horizon to control operation of the industrial system.
Dependencies are inferred from the claim text.