Application of backpropagation neural architectures to the realization of control transfer functions and compensators

Regino R. Diaz-Robainas; Abhijit S. Pandya; Ming Z. Huang

doi:10.1117/12.169985

2 March 1994 Application of backpropagation neural architectures to the realization of control transfer functions and compensators

Regino R. Diaz-Robainas, Abhijit S. Pandya, Ming Z. Huang

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Proceedings Volume 2243, Applications of Artificial Neural Networks V; (1994) https://doi.org/10.1117/12.169985
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

A method is developed to design simulations of neural-network based transfer functions, applicable to both linear and nonlinear structures. The algorithm used to implement the trainable neural mechanism is backpropagation. Using the trained structures as building blocks, a neural architecture is constructed in order to drive systems from expected inputs to satisfactory transient and steady-state output performance, in effect, the scope of control compensation; this method results in the design of neural-net control compensators. The algorithms are coded in a PC-based prolog, traditionally used for rule-based logic and Artificial Intelligence, rather than for Neural or Fuzzy models. Given a sequence representing the time-sample of a desired control input trajectory that will drive the plant to a desired output response, such a control input will be modelled as the desired output layer of an antecedent network driven by an error vector consistent with the closed-loop system's commanded behavior. This Controller network is trained to provide such an output profile for all expected inputs, in accordance with arbitrary specifications of rise-time, permitted overshoot, settling time, etc. The control vectors are generated as a by-product of this training. Additionally, a correlation is investigated between classical control parameters and the characteristics of the weight matrices, threshold vectors, and representation traits of the converged neural nets.

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Regino R. Diaz-Robainas, Abhijit S. Pandya, and Ming Z. Huang "Application of backpropagation neural architectures to the realization of control transfer functions and compensators", Proc. SPIE 2243, Applications of Artificial Neural Networks V, (2 March 1994); https://doi.org/10.1117/12.169985

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KEYWORDS

Neural networks

Control systems

Matrices

Neurons

Process modeling

Network architectures

Systems modeling

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