Browsing Τμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics by Author "Tsakalis, Kostas S."

Now showing items 1-12 of 12

    • 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 ...
    • Conference Object  

      ADAPTIVE CONTROL OF LINEAR TIME-VARYING PLANTS: A NEW CONTROLLER STRUCTURE. 

      Tsakalis, Kostas S.; Ioannou, Petros A. (American Automatic Control Council, 1987)
      The model reference control and model reference adaptive control problems are considered for a class of linear time-varying plants with bounded, piecewise smooth parameters. A controller structure that solves the model ...
    • Article  

      Adaptive Control of Linear Time-Varying Plants: A New Model Reference Controller Structure 

      Tsakalis, Kostas S.; Ioannou, Petros A. (1989)
      In this paper we study the problem of developing a control law which can force the output of a linear time-varying plant to track the output of a stable linear time-invariant reference model. We first show that the standard ...
    • Article  

      Adaptive control of time‐varying plants: Simple examples 

      Tsakalis, Kostas S.; Ioannou, Petros A. (1988)
      The design and properties of an adaptive model reference scheme and an adaptive pole placement control scheme for linear time‐varying plants are demonstrated via two simple examples. The two new schemes combine new control ...
    • Conference Object  

      Class of unmodeled dynamics in robust adaptive control. 

      Ioannou, Petros A.; Tsakalis, Kostas S. (Publ by American Automatic Control Council, 1988)
      The authors use time-domain and frequency-domain bounds to characterize the class of allowable unmodeled dynamics in robust adaptive control. This class is a general one and includes time delays, distributed systems, etc. ...
    • Conference Object  

      New indirect adaptive control scheme for time-varying plants 

      Tsakalis, Kostas S.; Ioannou, Petros A. (Publ by IEEE, 1988)
      An indirect adaptive control scheme for linear time-varying plants is presented which guarantees the closed-loop stability and exact tracking of a class of reference input signals. By incorporating any a priori available ...
    • Article  

      A New Indirect Adaptive Control Scheme for Time-Varying Plants 

      Tsakalis, Kostas S.; Ioannou, Petros A. (1990)
      An indirect robust adaptive controller designed for linear time-invariant plants may also meet its control objective approximately for slowly time-varying plants. The plant parameter variations act as a disturbance in the ...
    • Conference Object  

      ON THE MODEL REFERENCE ADAPTIVE CONTROL OF TIME-VARYING PLANTS. 

      Tsakalis, Kostas S.; Ioannou, Petros A. (IEEE, 1987)
      The authors have studied the problem of developing an adaptive control law that can force the output of a linear time-varying plant to track the output of a linear time-varying reference model and at the same time guarantee ...
    • Conference Object  

      Parameter estimation and pole-placement control of time-varying plants. 

      Tsakalis, Kostas S.; Ioannou, Petros A. (Publ by American Automatic Control Council, 1988)
      The pole placement and adaptive pole placement control problem of linear time-varying plants with smooth parameters is considered. A controller structure is proposed which guarantees the closed-loop stability and meets the ...
    • Article  

      A Robust Direct Adaptive Controller 

      Ioannou, Petros A.; Tsakalis, Kostas S. (1986)
      This paper proposes a new direct adaptive control algorithm which is robust with respect to additive and multiplicative plant unmodeled dynamics. The algorithm is designed based on the reduced-order plant, which is assumed ...
    • Conference Object  

      ROBUST DISCRETE-TIME ADAPTIVE CONTROL. 

      Ioannou, Petros A.; Tsakalis, Kostas S. (Plenum Press, 1986)
      This paper proposes a discrete-time model reference adaptive control algorithm which is robust with respect to additive plant uncertainties. The algorithm employs an adaptive law for adjusting the controller parameters. ...
    • Conference Object  

      ROBUST DISCRETE-TIME ADAPTIVE CONTROLLER. 

      Ioannou, Petros A.; Tsakalis, Kostas S. (IEEE, 1986)
      The authors propose a discrete-time model-reference adaptive control algorithm which is robust with respect to stable additive and multiplicative plant uncertainties. The algorithm uses the same controller structure as the ...