Open AccessA multi-threaded communication architecture for networked control systems
Author(s) -
Raazi Muhammad Khaliq-ur-Rahman. Muhammad B. Kadri Syed
Publication year - 2019
Publication title -
nust journal of engineering sciences
Language(s) - English
Resource type - Journals
eISSN - 2411-6319
pISSN - 2070-9900
DOI - 10.24949/njes.v12i1.403
Subject(s) - computer science , controller (irrigation) , telecommunications network , control system , networked control system , control engineering , communications system , software , network architecture , architecture , component (thermodynamics) , embedded system , control (management) , distributed computing , computer network , engineering , operating system , physics , thermodynamics , electrical engineering , artificial intelligence , agronomy , biology , art , visual arts
Advancement in communication technology has paved the way for geographically dislocating controllers from the plants they are controlling. Establishing a secure and reliable communication is an essential component to achieve robust control performance. Myriad network control schemes have been proposed but they are incapacitated due to a lack of reliable software paradigm. This highlights the need of a distributed system, which provides platform for smooth communication between a plant and its controller. In this work, we propose CASAPAC, which is a multi-threaded communication architecture designed to ensure reliable and in-order delivery of information between different modules of a network control system. Any control algorithm can be tested and employed over any network using CASAPAC. An adaptive fuzzy controller and a network based gain scheduled PI (Proportional Integral) controller have been tested on different networks using CASAPAC. In both cases, tests were carried out on a real plant of a coupled tank system. CASAPAC was able to handle all the communication efficiently in different scenarios and good control performance was achieved in both cases.