Now showing items 1-8 of 8

  • Adaptive estimation of time-varying parameters with application to roto-magnet plant 

    Na, Jing; Xing, Yashan; Costa Castelló, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2018-12-10)
    Article
    Open Access
    This paper presents an alternative adaptive parameter estimation framework for nonlinear systems with time-varying parameters. Unlike existing techniques that rely on the polynomial approximation of time-varying parameters, ...
  • Adaptive neural network state predictor and tracking control for nonlinear time-delay systems 

    Na, Jing; Ren, Xuemei; Gao, Yan; Griñó Cubero, Robert; Costa Castelló, Ramon (2010-02)
    Article
    Restricted access - publisher's policy
    A new adaptive nonlinear state predictor (ANSP) is presented for a class of unknown nonlinear systems with input time-delay. A dynamical identification with neu- ral network (NN) is constructed to obtain NN weights and ...
  • Composite PID control with unknown dynamics estimator for rotomagnet plant 

    Xing, Yashan; Na, Jing; Costa Castelló, Ramon (2018-01-01)
    Article
    Open Access
    Although PID con trol has b een widely used in practical engineering, its abilit y to reject external disturbance and to handle severe nonlinearities should b e further enhanced. In this pap er, we presen t a simple robust ...
  • Composite PID control with unknown dynamics estimator for rotomagnet plant 

    Xing, Yashan; Na, Jing; Costa Castelló, Ramon (2018)
    Conference report
    Open Access
    Although PID control has been widely used in practical engineering, its ability to reject external disturbance and to handle severe nonlinearities should be further enhanced. In this paper, we present a simple robust unknown ...
  • Disturbance Observer based Repetitive Controller for Time-Delay Systems 

    Na, Jing; Costa Castelló, Ramon; Griñó Cubero, Robert; Xuemei, Ren (2009-09-22)
    Conference report
    Open Access
    This paper presents a discrete control design for time-delay systems subjected to the periodical command signal or exogenous disturbances. Unlike other deadtime compensators (DTC), we take profit of the system components ...
  • Repetitive control for systems with time-delays and application to robotic servo motor 

    Na, Jing; Ren, Xuemei; Costa Castelló, Ramon; Griñó Cubero, Robert; Guo, Yu (2012-08-20)
    Article
    Restricted access - publisher's policy
    In many industrial robotic applications there is a need to track periodic reference signals and/or reject periodic disturbances. This paper presents a novel repetitive control design for systems with constant time-delays ...
  • Repetitive control for systems with time-delays and application to robotic servo motor 

    Na, Jing; Ren, Xuemei; Costa Castelló, Ramon; Griñó Cubero, Robert; Guo, Y. (2012)
    Conference lecture
    Restricted access - publisher's policy
    In many industrial robotic applications there is a need to track periodic reference signals and/or reject periodic disturbances. This paper presents a novel repetitive control design for systems with constant time-delays ...
  • Repetitive control of servo systems with time delays 

    Na, Jing; Ren, Xuemei; Costa Castelló, Ramon; Guo, yu (2014-03)
    Article
    Restricted access - publisher's policy
    In many industrial robotic servo applications there is a need to track periodic reference signals and/or reject periodic disturbances. Moreover, time-delays are usually unavoidable in control systems due to the sensoring ...