A multi-threaded communication architecture for networked control systems
NUST Journal of Engineering Sciences(2019)
摘要
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.
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关键词
Adaptive controls,Client-server systems,Communication architecture,Distributed system,Multithreading,Network delay
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