Dynamic programming based time-delay estimation technique for analysis of time-varying time-delay

被引:12
|
作者
Gupta, Deepak K. [1 ]
McKee, George R. [1 ]
Fonck, Raymond J. [1 ]
机构
[1] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA
来源
REVIEW OF SCIENTIFIC INSTRUMENTS | 2010年 / 81卷 / 01期
关键词
delays; dynamic programming; estimation theory; plasma diagnostics; plasma flow; plasma toroidal confinement; Tokamak devices; transfer functions; BEAM EMISSION-SPECTROSCOPY; PLASMA FLUCTUATION MEASUREMENTS; ZONAL FLOWS; TOKAMAK;
D O I
10.1063/1.3280161
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A new time-delay estimation (TDE) technique based on dynamic programming is developed to measure the time-varying time-delay between two signals. The dynamic programming based TDE technique provides a frequency response five to ten times better than previously known TDE techniques, namely, those based on time-lag cross-correlation or wavelet analysis. Effects of frequency spectrum, signal-to-noise ratio, and amplitude of time-delay on response of the TDE technique (represented as transfer function) are studied using simulated data signals. The transfer function for the technique decreases with increase in noise in signal; however it is independent of signal spectrum shape. The dynamic programming based TDE technique is applied to the beam emission spectroscopy diagnostic data to measure poloidal velocity fluctuations, which led to the observation of theoretically predicted zonal flows in high-temperature tokamak plasmas.
引用
收藏
页数:8
相关论文
共 50 条
  • [1] Time-delay systems with a controlled time-varying delay: stability analysis and applications
    Michiels, W
    Van Assche, V
    Niculescu, SI
    2004 43RD IEEE CONFERENCE ON DECISION AND CONTROL (CDC), VOLS 1-5, 2004, : 4521 - 4526
  • [2] Stability Analysis of Time-Varying Neutral Time-Delay Systems
    Mazenc, Frederic
    IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 2015, 60 (02) : 540 - 546
  • [3] Model Quality Estimation in Systems with Time-Varying Time-delay Uncertainty
    Salehpour, Soheil
    Johansson, Andreas
    2008 IEEE INTERNATIONAL SYMPOSIUM ON COMPUTER-AIDED CONTROL SYSTEM DESIGN, 2008, : 99 - 104
  • [4] Stabilization of time-delay systems with a controlled time-varying delay and applications
    Michiels, W
    Van Assche, V
    Niculescu, SI
    IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 2005, 50 (04) : 493 - 504
  • [5] A PARAMETRIC TECHNIQUE FOR TIME-DELAY ESTIMATION
    FRIEDLANDER, B
    PORAT, B
    IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1984, 20 (06) : 729 - 735
  • [6] H∞ performance analysis of Time-varying Time-delay Nonlinear Systems
    Kong, Feng
    Lu, Hongqian
    Li, Qijia
    2024 14TH ASIAN CONTROL CONFERENCE, ASCC 2024, 2024, : 2202 - 2206
  • [7] Robust stability of nonlinear time-delay systems with interval time-varying delay
    Orihuela, L.
    Millan, P.
    Vivas, C.
    Rubio, F. R.
    INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL, 2011, 21 (07) : 709 - 724
  • [8] ADAPTIVE PREDICTIVE CONTROL OF SYSTEMS WITH TIME-VARYING TIME-DELAY
    DUMONT, GA
    ELNAGGAR, A
    ELSHAFEI, A
    INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING, 1993, 7 (02) : 91 - 101
  • [9] ISS and iISS for discontinuously time-varying time-delay systems
    Mancilla-Aguilar, Jose L.
    Haimovich, Hernan
    IFAC PAPERSONLINE, 2023, 56 (02): : 3893 - 3898
  • [10] OBSERVER-BASED CONTROLLER DESIGN OF TIME-DELAY SYSTEMS WITH AN INTERVAL TIME-VARYING DELAY
    Mai Viet Thuan
    Vu Ngoc Phat
    Hieu Trinh
    INTERNATIONAL JOURNAL OF APPLIED MATHEMATICS AND COMPUTER SCIENCE, 2012, 22 (04) : 921 - 927