Proceedings of the Korean Nuclear Society Conference (한국원자력학회:학술대회논문집)
- 1998.05a
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- Pages.321-328
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- 1998
Design of Fault Tolerant Control System for Steam Generator Using Fuzzy Logic
- Kim, Myung-Ki (Korea Electronic Power Research Institute, Nuclear Power generation Research Laboratory) ;
- Seo, Mi-Ro (Korea Electronic Power Research Institute, Nuclear Power generation Research Laboratory)
- Published : 1998.05.01
Abstract
A controller and sensor fault tolerant system jot a steam generator is designed with fuzzy logic. A structure of the : proposed fault tolerant redundant system is composed of a supervisor and two fuzzy weighting modulators. A supervisor alternatively checks a controlled and a sensor induced performances to identify Which Part, a controller or a sensor, is faulty. In order to analyze controller induced performance both an error and a charge in error of the system output an chosen as fuzzy variables. The fuzzy logic jot a sensor induced performance uses two variables : a deviation between two sensor outputs and its frequency, Fuzzy weighting modulator generates an output signal compensated for faulty input signal. Simulations show that the : proposed fault tolerant control scheme jot a steam generator regulates welt water level by suppressing fault effect of either controllers or sensors. Therefore through duplicating sensors and controllers with the proposed fault tolerant scheme, both a reliability of a steam generator control and sensor system and that of a power plant increase even mote.
Keywords