G - Physics – 05 – B
Patent
G - Physics
05
B
G05B 11/01 (2006.01) B01D 3/42 (2006.01) B01J 19/00 (2006.01) G05B 13/02 (2006.01)
Patent
CA 2106049
47 ABSTRACT OF THE DISCLOSURE A control system having four major components: a target optimizer, a path optimizer, a neural network adaptation controller and a neural network. In the target optimizer, the controlled variables are optimized to provide the most economically desirable outputs, subject to operating constraints. Various manipulated variable and disturbance values are provided for modeling purposes. The neural network receives as inputs a plurality of settings for each manipulated and disturbance variable. For target optimization all the neural network input values are set equal to produce a steady state controlled variable value. The entire process is repeated with differing manipulated variable values until an optimal solution develops. The resulting target controlled and manipulated variable values are provided to the path optimizer to allow the manipulated variables to be adjusted to obtain the target output. Various manipulated variable values are developed to model moves from current to desired values. In this case trend indicating values of the manipulated and disturbance variables are provided to produce time varying values of the controlled variables. The process is repeated until an optimal path is obtained, at which time the manipulated variable values are applied to the actual process. On a periodic basis all of the disturbance, manipulated and controlled variables are sampled to find areas where the training of the neural network is sparse or where high dynamic conditions are indicated. These values are added to the set of values used to train the neural network.
Bhat Naveen V.
Braden William B.
Dubose Paul A.
Federowicz Alexander J.
Graettinger Timothy J.
Kirby Eades Gale Baker
Neuralware Inc.
Texaco Inc.
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