Residual activation neural network

  • US 5,353,207 A
  • Filed: 06/10/1992
  • Issued: 10/04/1994
  • Est. Priority Date: 06/10/1992
  • Status: Expired due to Term
First Claim
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1. A control network for controlling a plant having plant control inputs for receiving plant control variables and desired plant outputs, the plant outputs being a function of the plant control variables and external influences on the plant, comprising:

  • a control network input for receiving as network inputs the current plant control variables and desired plant outputs;

    a control network output for outputting predicted plant control variables necessary to achieve the desired plant outputs;

    a processing system for processing the received plant control variables through an inverse representation of the plant that represents the dependencies of the plant output on the plant control variables parameterized by an estimation of the external influences to provide the predicted plant control variables to achieve the desired plant outputs, said processing system having;

    an estimation network for estimating the external influences on the plant and output estimated external influences,means for parameterizing the inverse representation of the plant with the estimated influences.a first intermediate output for providing a predicted plant output,a first intermediate processing system for receiving the plant control variables from said control network input and the estimated external influences from said estimation network for processing through a predictive model of the plant to generate the predicted plant outputs for output from said intermediate output,an error generation device for comparing the predicted plant outputs to the desired plant outputs and generating an error representing the difference therebetween,a second intermediate processing system for processing the error through the inverse representation of the plant that represents the dependencies of the plant output on the plant control variables parameterized by the estimated external influences to output predicted control variable change values,a control system for inputting said predicted control variable change values to the input of said first intermediate processing system for summing with the control variable input to provide a summed control variable value, and processing the summed control variable through said first processing system to minimize said error and output the summed control variable value as the predicted control variables; and

    an interface device for inputting the predicted plant control variables that are output by said control network output to the plant as plant control variables to achieve the desired plant outputs.

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