• Article  

      Adaptive control of linear time-varying plants 

      Tsakalis, Kostas S.; Ioannou, Petros A. (1987)
      In this paper the model reference adaptive control (MRAC) problem of a class of linear time-varying (LTV) plants is considered. The plant parameters are assumed to be smooth, bounded functions of time which satisfy the ...
    • Article  

      Instability analysis and improvement of robustness of adaptive control 

      Ioannou, Petros A.; Kokotovic, P. V. (1984)
      The effects of unmodeled high frequency dynamics and bounded disturbances on stability and performance of adaptive control schemes are analyzed. Five possible types of instability mechanisms-parameter drift, 'linear' ...