Title :
Study on improved mixed traffic scheduler and feedback scheduling applied for network control systems
Author :
Qi, Liu ; Feng, Kong
Author_Institution :
Dept. of Comput. Eng., Guangxi Univ. of Technol., Liuzhou, China
Abstract :
Time-delay of message-transmission in the network is one of the main causes for bad control performance in multi-processor networked control system (NCS). Improved mixed traffic scheduler can shorten deadline of message-transmission and cut much time-delay by increasing number 1 of sampling. In the meantime, feedback scheduling control model for NCS can schedule instantly message-transmission and always keep reasonable leisure-time by regulating the basic sampling-period of NCS. As a result, the congestion and time-delay for message in the network were decreased, and an utilization rate for network was raised. According to the simulation experiment, dynamic performance of NCS has also been greatly improved. The effect of the researches on message scheduling has been confirmed.
Keywords :
control engineering computing; data communication; delays; distributed control; feedback; message passing; multiprocessing systems; processor scheduling; telecommunication congestion control; congestion; control performance; feedback scheduling control; improved mixed traffic scheduler; message scheduling; message-transmission; multiprocessor networked control system; sampling; time-delay; Dynamic scheduling; Networked control systems; Processor scheduling; Real time systems; Regulators; Simulation; Feedback scheduling control model; Improved mixed traffic scheduler; Networked control system;
Conference_Titel :
Intelligent Control and Automation (WCICA), 2010 8th World Congress on
Conference_Location :
Jinan
Print_ISBN :
978-1-4244-6712-9
DOI :
10.1109/WCICA.2010.5554031
