Simulation Research on Networked Control System Based on NS-2

2012 ◽  
Vol 490-495 ◽  
pp. 608-612
Author(s):  
Xiao Hui Zhang ◽  
Mu Li ◽  
Na Li
Keyword(s):  
Time Delay ◽  
Data Transmission ◽  
Networked Control System ◽  
Network Control ◽  
Delay Compensation ◽  
Simulation Research ◽  
Compensation Methods ◽  
Environment Simulation ◽  
Network Transmission ◽  
Time Delay Compensation

A key issue in NCS is network transmission. In the research of network control, in some special fields, the system performance could be evaluated based on the real-time character of data transmission in the LAN, but the result gotten in this kind of method isn’t representative. In this paper, a simulation model is firstly established via the NS-2 software under research of network transmission, and then the interval segmentation time-delay and the constant time-delay compensation methods of network control are investigated under this environment. Simulation result validates the effectiveness of the model.

Designing Time Delay Compensation Methods for Functional Modes Using Sensory Evaluation

2015 ◽  
Vol 135 (7) ◽  
pp. 755-764 ◽  
Author(s):  
Shuhei Shimizu ◽  
Yoshiki Ohno ◽  
Takahiro Nozaki ◽  
Kouhei Ohnishi
Keyword(s):  
Time Delay ◽  
Sensory Evaluation ◽  
Delay Compensation ◽  
Compensation Methods ◽  
Time Delay Compensation

Networked control system time-delay compensation based on PI-based dynamic matrix control

2021 ◽  
Vol 69 (1) ◽  
pp. 41-51
Author(s):  
Zhongda Tian
Keyword(s):  
Control System ◽  
Time Delay ◽  
Networked Control System ◽  
Compensation Method ◽  
Networked Control ◽  
Dynamic Matrix Control ◽  
Delay Compensation ◽  
Dynamic Matrix ◽  
Time Delay Compensation ◽  
Matrix Control

AbstractThe network-induced time-delay caused by the introduction of the communication network in a networked control system has a great negative impact on the stability and performance of the system. In order to compensate for the performance degradation of the networked control system caused by time-delay, a time-delay compensation method based on PI-based dynamic matrix control for networked control system is proposed. In this study, autoregressive integrated moving average model is used to predict the future time-delay. The predictive time-delay replaces the actual time-delay as a parameter of the controller. In order to improve the compensation effect of dynamic matrix control, the feedback structure of the PI control and the predictive ability of dynamic matrix control are combined. The new objective function of dynamic matrix control is combined with PI structure to obtain the optimal control increment value. The PI controller can correct the output of dynamic matrix control and reduce the deviation between the actual output and the predicted output. The effect of the model mismatch and interference on the system is reduced. The robustness and anti-interference performance of the system is improved. The controller can select the appropriate control value to transmit to the actuator to compensate for the effect of the random time-delay in the networked control system. The stability of the compensation method is proved. Through the simulation results, the effectiveness of the proposed time-delay compensation method is verified.

scholarly journals Networked Control System in Quadrotor Altitude Control with Time Delay Compensation

2020 ◽  
Vol 1577 ◽  
pp. 012031
Author(s):  
R Panuntun ◽  
O Wahyunggoro ◽  
S Herdjunanto ◽  
A R Rafsanzani ◽  
N Setiawan
Keyword(s):  
Control System ◽  
Time Delay ◽  
Networked Control System ◽  
Networked Control ◽  
Delay Compensation ◽  
Altitude Control ◽  
Time Delay Compensation
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