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Neural networks for self-learning control systems

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2 Author(s)
Nguyen, D.H. ; Dept. of Electr. Eng., Stanford Univ., CA, USA ; Widrow, B.

It is shown that a neural network can learn of its own accord to control a nonlinear dynamic system. An emulator, a multilayered neural network, learns to identify the system's dynamic characteristics. The controller, another multilayered neural network, next learns to control the emulator. The self-trained controller is then used to control the actual dynamic system. The learning process continues as the emulator and controller improve and track the physical process. An example is given to illustrate these ideas. The 'truck backer-upper', a neural network controller that steers a trailer truck while the truck is backing up to a loading dock, is demonstrated. The controller is able to guide the truck to the dock from almost any initial position. The technique explored should be applicable to a wide variety of nonlinear control problems.<>

Published in:

Control Systems Magazine, IEEE  (Volume:10 ,  Issue: 3 )