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In this paper, MASCONTROL, a multiagent system (MAS) for system identification and process control, is presented. This MAS implements a self-tuning regulator (STR) scheme. In this work, an ontology agent (OA) is included, using DAML+OIL as ontology language. From their experience, the authors consider this architecture highly useful for identification and control processes
The current situation in automation is characterised by an ongoing trend towards distributed systems based on intelligent devices, the application of Web services and the usage of Ethernet as the main communication media. The most important standard to deal with distributed control systems (DCSs) is the IEC 61499 whose industrial application is still at the beginning. Within this paper, a platform...
The Bluetooth (BT) standard, originally designed as a cable replacement technology for low-cost, effortless connection of electronic devices, is becoming quite an attractive option even in industrial communication, as it allows low-power, cheap and easy-to-build solutions to be obtained using the available BT modules and application profiles. The great recent interest in using Bluetooth in distributed...
Today communication networks are more and more used to implement distributed applications concerned by closed loop process controls. These applications require a timeliness service in order to guarantee performances (stability, ...). The goal of this paper is, by considering a closed loop process control application with an open loop transfer function of the type G(s)=K/s(1+taus) (both no position...
The degree of sophistication of operating systems involved in factory automation has increased steadily in recent years, leading to products that provide the concurrent execution of process control functions and general-purpose applications. This paper gives some insights on the use of virtualization techniques on an ARM processor, in order to support the coexistence of multiple operating systems...
In many digital control applications, data acquisition and process control are time-critical actions, assumed to be instantaneous and strictly periodic. However, aspects related to real-time scheduling algorithms may postpone the task execution and, consequently, delay the data acquisition and process control. We consider the acquired data from sensors as valid if acquired inside a time-interval that...
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