Digital Control Process Automation in Temperature Reactor System

摘要

This paper presents a smart digital control technique applied in remote monitoring of mission critical process facility using Very High Temperature Reactor (VHTR) as case context. The work provides design architecture, its mechanism/algorithm for maintaining the output of temperature reactor and its specific processes within a desired range. Protus ISIS Virtual Simulation Module (PVSM) is used to develop the process control system. The paper introduced Control Flow Algorithm (CFA), ASM Chart for Temperature Control System (ATCS), Temperature Process Control Communication Interface (TPCI) and a Fully Expanded State Transition Table (FESTT) to enhance system performance. In the implementation, embedded AT processor, GSM-Modem, Temperature sensor (LM35), Analog to Digital converter (ADC0804), Crystal oscillator (11.0592MHz), auto/manual, command button controls, and server-sink, served as the main test-hardware elements. The result shows that digital communication of measured temperature thresholds operate with coded signals over a GSM communication channel, providing feedback to the process control facility. In the system validation, MATLAB driven feed-forward and feedback control responses for the plant disturbance are shown as significant control components in design. System optimality is achieved by combining the feedback and the feed-forward control elements. The automated digital system satisfactorily reported its control states in real-time. Finally, the design proof-of-concept ready for end-market is presented for further improvements.