1993 Volume 5 Issue 3 Pages 626-638
In fuzzy expert systems which support conventional fuzzy reasonings, human interface capabilities, for example, found in rule editors using multiwindows, can be of a comparatively high level. However, such conventional fuzzy expert systems suffer from problems including difficulty with linking user's programs with the shell because rules run on the shell, and slow inference speeds because the shell systems are generally of a scale so large that real-time control is impossible. For these reasons, authors are developing an fuzzy shell FRASH (Fuzzy Realtime Advanced SHell) for a real-time intelligent control system that is expressible in a user's program. This paper mainly describes basic configurations and functions of expression in the FRASH. This shell possesses the following several features : 1) high-speed inference engines in the library format, 2) an online-tuning function for all data related to inferences, 3) an offline editor and an inference display function both using multiwindows, 4) fuzzy frame structures defined by fuzzy slot values, and 5) a fuzzy algorithm compiler using macro codes. We performed simple simulations to inspect the basic function of FRASH. By the simulation, it was proved that the fuzzy reasoning function is fast enough for use in real-time machine control. The fuzzy frame and the fuzzy algorithm functions are useful to complex problems such as macro decision making.
