Open AccessAnalysis on positive effect of time-delay on a class of second-order oscillatory systems with unit negative feedback
Author(s) -
Yong Zhang
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.230202
Subject(s) - control theory (sociology) , nyquist stability criterion , stability (learning theory) , nyquist plot , computer science , class (philosophy) , transmission (telecommunications) , unit (ring theory) , nyquist–shannon sampling theorem , small gain theorem , control system , mathematics , control (management) , physics , mathematical analysis , statistics , telecommunications , parametric statistics , mathematics education , electrode , electrical engineering , quantum mechanics , machine learning , dielectric spectroscopy , electrochemistry , artificial intelligence , engineering
The stability analysis on a class of oscillatory systems whose controlled object has a standard form of second-order systems is presented. The effect of the signal transmission delay on the performance of the closed loop control system with unit negative feedback is discussed. The relationship between the time-delay and the stability of closed loop control system is obtained via drawing and analyzing the Nyquist plots in the different regions of the relative damping coefficient. The simulation example of unit step response for each case is processed and the simulation results show that the analysis is correct.