• 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  

      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 ...
    • 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: Mep96Gak@sheffield.ac.uk, 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  

      Neural networks as on-line approximators of nonlinear systems 

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