Performance comparison and robustness studies of robust bode and IMC based controllers for plants with large time delay

2014 ◽  
Author(s):  
Sudeshna Dasgupta ◽  
Smita Sadhu ◽  
T. K. Ghoshal
Keyword(s):  
Time Delay ◽  
Large Time ◽  
Performance Comparison

scholarly journals Linear time-delay circuit and stabilizing controller

2021 ◽  
Vol 2091 (1) ◽  
pp. 012005
Author(s):  
Yuhao Cong ◽  
Yong Zhang ◽  
Guang-Da Hu
Keyword(s):  
Time Delay ◽  
Large Time ◽  
Linear Time ◽  
Least Square Method ◽  
Optimization Method ◽  
Delay System ◽  
Least Square ◽  
Single Chip ◽  
Stabilizing Controller ◽  
Delay Circuit

Abstract This paper is concerned with a linear time-delay circuit and its feedback control. We use electronic components such as resistors and capacitors to realize a linear time-delay system. The time-delays are generated by operational amplifiers and single-chip microcomputers. Based on the actual data measured by the oscilloscope, the parameters of the system are estimated using the least square method. Then a comparison study between the waveform image measured by the oscilloscope and the numerical simulation obtained by MATLAB verifies the effectiveness of the parameters estimations of the circuit system. Furthermore, the circuit system is unstable with a large time-delay, a feedback controller is designed to stabilize the circuit system using the optimization method in the literature. Finally, the experimental results in the linear time-delay circuit show the effectiveness of the optimization method.

A Design Method for Modified Smith Predictors for Non-Minimum-Phase Time-Delay Plants with Multiple Feedback-Connected Time-Delays

2010 ◽  
Vol 36 ◽  
pp. 253-262 ◽  
Author(s):  
Iwanori Murakami ◽  
Nghia Thi Mai ◽  
Kou Yamada ◽  
Takaaki Hagiwara ◽  
Yoshinori Ando ◽  
...  
Keyword(s):  
Steady State ◽  
Time Delay ◽  
Time Delays ◽  
Large Time ◽  
Design Method ◽  
Smith Predictor ◽  
Minimum Phase ◽  
Effective Time ◽  
Phase Time ◽  
Step Disturbance

In this paper, we examine a design method for modified Smith predictors for non-minimum-phase time-delay plants with multiple feedback-connected time-delays. The Smith predictor is proposed by Smith to overcome time-delay and known as an effective time-delay compensator for a plant with large time-delay. The Smith predictor by Smith cannot be used for plants having an integral mode, because a step disturbance will result in a steady state error. Several papers considered the problem to design modified Smith predictors for unstable plants. However, no paper examines a design method for modified Smith predictors for non-minimum-phase time-delay plants with multiple feedback-connected time-delays. In this paper, we examine a design method for modified Smith predictors for non-minimum-phase time-delay plants with multiple feedback-connected time-delays.

scholarly journals Large time‐delay decoupling and correction in synchronous complex‐vector frame

2019 ◽  
Vol 12 (2) ◽  
pp. 254-266 ◽  
Author(s):  
Qi Xiao ◽  
Fen Tang ◽  
Zhen Xin ◽  
Jiayu Zhou ◽  
Pengfei Chen ◽  
...  
Keyword(s):  
Time Delay ◽  
Large Time ◽  
Complex Vector

Observer–PID Stabilization Strategy for Unstable First-Order Linear Systems with Large Time Delay

2012 ◽  
Vol 51 (25) ◽  
pp. 8477-8487 ◽  
Author(s):  
J. F. Márquez-Rubio ◽  
B. del-Muro-Cuéllar ◽  
M. Velasco-Villa ◽  
D. F. Novella-Rodríguez
Keyword(s):  
Time Delay ◽  
Linear Systems ◽  
Large Time ◽  
Order Linear ◽  
First Order

Stabilization strategy for unstable first order linear systems with large time-delay

2011 ◽  
Vol 14 (5) ◽  
pp. 1171-1179 ◽  
Author(s):  
J. F. Márquez-Rubio ◽  
B. del Muro-Cuéllar ◽  
M. Velasco-Villa ◽  
J. Álvarez-Ramírez
Keyword(s):  
Time Delay ◽  
Linear Systems ◽  
Large Time ◽  
Order Linear ◽  
First Order
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