An on-line information processing method for intelligent control systems

An on-line information processing method, called characteristics recognition (CR), which is based on symbolic manipulation, phase-plane analysis and fuzzy classification is proposed for complex process control systems in which there are no reasonable mathematical models available. Emulating human decision processes which apply on-line characteristic information to solve complex control problems, this paper presents an alternative to extract and recognise the characteristic patterns which can capture system behaviour features and monitor control performance without prior process model. The key ideas, performance feature analysis in normalised phase-plane, characteristic pattern classification and recognition method are discussed in this paper.