Browsing by Subject "Control system analysis"

Now showing items 21-36 of 36

    • Article  

      A new linear adaptive controller: Design, analysis and performance 

      Zhang, Y.; Ioannou, Petros A. (2000)
      The certainty equivalence and polynomial approach, widely used for designing adaptive controllers, leads to "simple" adaptive control designs that guarantee stability, asymptotic error convergence, and robustness, but not ...
    • Article  

      Performance analysis for a changepoint problem 

      Hibey, J. L.; Charalambous, Charalambos D. (1999)
      Nonlinear stochastic differential equations are used to model a version of the changepoint problem. State estimates of the minimum mean-square-error-type are used in likelihood-ratio tests to detect the time of change. ...
    • Article  

      A review of proper modeling techniques 

      Ersal, T.; Fathy, H. K.; Rideout, D. G.; Louca, Loucas S.; Stein, J. L. (2008)
      A dynamic system model is proper for a particular application if it achieves the accuracy required by the application with minimal complexity. Because model complexity often-but not always-correlates inversely with simulation ...
    • Conference Object  

      A review of proper modeling techniques 

      Ersal, T.; Fathy, H. K.; Louca, Loucas S.; Rideout, D. G.; Stein, J. L. (Affiliation: University of Michigan, Department of Mechanical Engineering, Ann Arbor, MI, United StatesAffiliation: University of Cyprus, Department of Mechanical and Manufacturing Engineering, Nicosia, CyprusAffiliation: Memorial University of Newfoundland, Department of Engineering and Applied Science, St. John's, NL, CanadaCorrespondence Address: Ersal, T.University of Michigan, Department of Mechanical Engineering, Ann Arbor, MI, United Statesemail: tersal@umich.edu, 2008)
      A dynamic system model is proper for a particular application if it achieves the accuracy required by the application with minimal complexity. Because model complexity often - but not always - correlates inversely with ...
    • Conference Object  

      Robust adaptive control for a class of mimo nonlinear systems 

      Xu, H.; Ioannou, Petros A. (2002)
      The design of stabilizing controllers for nonlinear plants with unknown nonlinearities is a challenging problem. The inability to identify the nonlinearities on-line or off-line accurately motivates the design of stabilizing ...
    • Article  

      Robust adaptive control of minimum phase non-linear systems 

      Johansen, T. A.; Ioannou, Petros A. (1996)
      We show that an adaptive input/output feedback linearization control scheme for minimum phase nonlinear systems is robust with respect to unstructured plant uncertainties such as unmodelled dynamics and disturbances provided ...
    • Article  

      A robust adaptive nonlinear control design 

      Polycarpou, Marios M.; Ioannou, Petros A. (1996)
      An adaptive control design procedure for a class of nonlinear systems with both parametric uncertainty and unknown nonlinearities is presented. The unknown nonlinearities lie within some 'bounding functions', which are ...
    • Conference Object  

      Robust modification of a new class of adaptive controllers 

      Zhang, Youping; Ioannou, Petros A. (1995)
      Recently, a new class of adaptive control schemes, motivated from nonlinear systems theory, has been proposed for minimum phase linear time invariant plants. Under certain assumptions on the plant transfer function, these ...
    • Conference Object  

      Robust platoon-stable controller design for autonomous intelligent vehicles 

      Stotsky, A.; Chien, C. C.; Ioannou, Petros A. (IEEE, 1994)
      A new variable structure longitudinal controller is designed and analyzed for an autonomous intelligent vehicle. The proposed controller not only guarantees individual vehicle stability but also platoon stability. Moreover, ...
    • Conference Object  

      Robustness of nonlinear control systems with respect to unmodeled dynamics 

      Zhang, Youping; Ioannou, Petros A. (1996)
      In this paper, we examine the global stability properties of nonlinear controllers in the presence of high frequency unmodeled dynamics. We develop necessary and sufficient conditions for a general class of nonlinear control ...
    • Conference Object  

      Robustness of the adaptive backstepping controllers for linear systems 

      Zhang, Youping; Ioannou, Petros A. (IEEE, 1997)
      In this paper, we present a unified procedure for designing and analyzing robust adaptive backstepping controllers for linear systems. Both the modular design and tuning functions design are considered. These controllers ...
    • Conference Object  

      Servo Control Design for a Hard Disk Drive Based on Estimated Head Position at High Sampling Rates 

      Ioannou, Petros A.; Xu, H.; Fidan, B. (2003)
      In this paper we use the ACORN estimator that generates estimates of the head position by processing servo burst and data sector measurements of the mean square error (MSE), to provide head position error measurements at ...
    • Conference Object  

      A simple roadway control system for freeway traffic 

      Zhang, J.; Chang, H.; Ioannou, Petros A. (2006)
      In this paper, a roadway control system that regulates variable speed limits along the freeway in addition to ramp metering is proposed to counteract traffic congestion and improve freeway efficiency. It treats the speed ...
    • Article  

      Stochastic testing of finite state machines 

      Hadjicostis, Christoforos N. (2001)
      This paper discusses an approach that uses statistical observations about the steady-state behavior of a finite state machine (FSM) in order to detect and identify permanent failures in its state transition mechanism. The ...
    • Conference Object  

      A switching controller for multivariable LTI systems with known and unknown parameters 

      Fidan, B.; Kosmatopoulos, E. B.; Ioannou, Petros A. (2002)
      The design of adaptive controllers for multi-input multi-output (MIMO) linear time invariant (LTI) systems is challenging due to the high dimension and parameterization issues associated with MIMO systems. In this paper ...
    • Article  

      Traffic Density Control for Automated Highway Systems 

      Chien, C. -C; Zhang, Y.; Ioannou, Petros A. (1997)
      Traffic flow instabilities such as traffic congestion are often caused by ad hoc and inappropriate speeds and headways that humans choose when they operate their vehicles. In an automated highway system (AHS) environment, ...