15th Triennial World Congress of the International Federation of Automatic Control
  Barcelona, 21–26 July 2002 
STABILITY OF FEEDBACK ERROR LEARNING METHOD FOR GENERAL PLANTS WITH TIME DELAY
Aiko Miyamura* Hidenori Kimura*
* Department of Complexity Science and Engineering
Graduate School of Frontier Science,
The University of Tokyo, Japan

Feedback error learning method was recently proposed by Kawato et.al. as a possible architecture of brain motor control which is supported by experimental results in neurophysiology. In this paper, we analyze it as a two-degree-of-freedom adaptive control for general time invariant linear plant with adaptive controller in the feedforward path. A time delay is allowed in the feedback loop as in the neuronal pathways of motor control. We derive stability condition of the feedback error learning method based on the strict positiveness of the closed loop system. The control performance of the feedback error learning method as a design strategy of adaptive control has been demonstrated by simulation results.
Keywords: time delay; motor control; adaptive control; feedforward systems; inverse system
Session slot T-Th-M02: Time Delay and PID Adaptive Control/Area code 3b : Adaptive Control and Tuning