Browsing by Subject "Nonlinear systems"

Now showing items 1-20 of 22

    • Conference Object  

      Abrupt and incipient fault isolation of nonlinear uncertain systems 

      Zhang, Xiaodong; Polycarpou, Marios M.; Parisini, T. (2000)
      This paper presents a robust fault diagnosis scheme for abrupt and incipient faults in nonlinear uncertain dynamical systems. A detection and approximation estimator is used for online health monitoring. Once a fault is ...
    • Article  

      Adaptive control for a class of large scale non-linear systems 

      Xu, H.; Ioannou, Petros A.; Mirmirani, M. D. (2005)
      The design of stabilizing controllers for multi-input multi-output (MIMO) non-linear plants with unknown non-linearities is a challenging problem. The inability to identify the non-linearities on-line or off-line accurately ...
    • Article  

      Conditional moment generating functions for integrals and stochastic integrals 

      Charalambous, Charalambos D.; Elliott, R. J.; Krishnamurthy, V. (2003)
      In this paper we present two methods for computing filtered estimates for moments of integrals and stochastic integrals of continuous-time nonlinear systems. The first method utilizes recursive stochastic partial differential ...
    • Article  

      Convex design control for practical nonlinear systems 

      Baldi, S.; Michailidis, I.; Kosmatopoulos, E. B.; Papachristodoulou, A.; Ioannou, Petros A. (2014)
      This paper describes a new control scheme for approximately optimal control (AOC) of nonlinear systems, convex control design (ConvCD). The key idea of ConvCD is to transform the approximate optimal control problem into a ...
    • Conference Object  

      Decentralized fault accommodation of a class of interconnected nonlinear systems using an adaptive approximation approach 

      Panagi, P.; Polycarpou, Marios M. (2009)
      This paper presents a decentralized adaptive approximation design for the fault tolerant control of interconnected subsystems. We consider faults that occur in the subsystems local dynamics as well as in the interconnection ...
    • Article  

      Energy-based model reduction methodology for automated modeling 

      Louca, Loucas S.; Stein, J. L.; Hulbert, G. M. (2010)
      In recent years, algorithms have been developed to help automate the production of dynamic system models. Part of this effort has been the development of algorithms that use modeling metrics for generating minimum complexity ...
    • Doctoral Thesis  Open Access

      A filtering approach for fault diagnosis of nonlinear uncertain systems 

      Keliris, Christodoulos K. (Πανεπιστήμιο Κύπρου, Πολυτεχνική Σχολή / University of Cyprus, Faculty of Engineering, 2015-04)
      Αυτή η διατριβή προτείνει μια καινοτόμα μέθοδο διάγνωσης σφαλμάτων, μέσω γραμμικών φίλτρων, για μη γραμμικά συστήματα με μη ακριβή μοντελοποίηση και κάτω από την ύπαρξη θορύβου στις μετρήσεις. Στις περισσότερες πρακτικές ...
    • Article  

      Frequency domain and dynamic game methods for actuator/sensor selection in systems with sector nonlinearities 

      Demetriou, M. A.; Charalambous, Charalambos D. (2001)
      The purpose of this note is to provide a method for placing actuators and sensors in systems with nonlinear dynamics wherein the choices for actuator and sensor locations are such that the resulting system is rendered ...
    • Conference Object  

      Identification of hysteretic systems using the differential evolution algorithm 

      Kyprianou, Andreas; Worden, K. (Affiliation: Dept. of Mechanichal Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United KingdomCorrespondence Address: Kyprianou, A.Dept. of Mechanichal Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdomemail: [email protected], 1998)
      In system identification, it is well-known that any non-linear in the parameters system, possesses a complicated error surface with many local minima. In this case the conventional algorithms, such as those based on least ...
    • Conference Object  

      Least-Square estimation for nonlinear systems with applications to phase and envelope estimation in wireless fading channels 

      Socratous, Y.; Charalambous, Charalambos D.; Georghiades, C. N. (2008)
      This paper addresses the problem of nonlinear Least-Square estimation. A new approach is presented which employees a change of probability measure technique to derive recursive equations for conditional means of nonlinear ...
    • Conference Object  

      Modeling and control design for a computer controlled brake system 

      Raza, H.; Xu, Z.; Yang, B.; Ioannou, Petros A. (IEEE, 1996)
      In this paper we consider the problem of modeling and control of a computer controlled brake system. The brake model is developed using a series of experiments conducted on a test bench which contains the full scale brake ...
    • Conference Object  

      Neural networks as on-line approximators of nonlinear systems 

      Polycarpou, Marios M.; Ioannou, P. A. (1992)
    • Article  

      Robust adaptive control for a class of MIMO nonlinear systems with guaranteed error bounds 

      Xu, H.; Ioannou, Petros A. (2003)
      The design of stabilizing controllers for multiple-input-multiple-output (MIMO) nonlinear plants with unknown nonlinearities is a challenging problem. The high dimensionality coupled with the inability to identify the ...
    • Article  

      Robust adaptive control of linearizable nonlinear single input systems with guaranteed error bounds 

      Xu, H.; Ioannou, Petros A. (2004)
      In this paper, a nonlinear robust adaptive control algorithm is designed and analyzed for a class of single-input nonlinear systems with unknown nonlinearities. The controller employs a single layer neural network to ...
    • 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 ...
    • Conference Object  

      Robust adaptive nonlinear control design 

      Polycarpou, Marios M.; Ioannou, Petros A. (Publ by IEEE, 1993)
      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 ...
    • 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 adaptive sliding control of linearizable systems 

      Xu, H.; Mirmirani, M.; Ioannou, Petros A.; Boussalis, Helen R. (2001)
      A switching adaptive control algorithm based on a sliding mode method is proposed for a class of single-input, single-output nonlinear systems with unknown dynamics. The plant is assumed to be linear-in-the-control input ...
    • Article  

      Robust switching adaptive control of multi-input nonlinear systems 

      Kosmatopoulos, E. B.; Ioannou, Petros A. (2002)
      During the last decade a considerable progress has been made in the design of stabilizing controllers for nonlinear systems with known and unknown constant parameters. New design tools such as adaptive feedback linearization, ...
    • Conference Object  

      A scalable iterative convex design for nonlinear systems 

      Baldi, S.; Ioannou, Petros A.; Kosmatopoulos, E. B. (2012)
      A recently developed control scheme for approximately optimal control of nonlinear systems is the so-called Convex Control Design (ConvCD) methodology, that transforms the control problem of generic nonlinear systems into ...