The Research of Key Technology of the New IETM

IETM Interactive Electronic Technical Manual , is a complex technical manuals , it is in digital form stored in a suitable medium , written in manual or automatic editing system , and through the electronic screen display is controlled by a computer . Used to enhance the use of technical manuals and training effect , and to more effectively protect the use of complex technical systems , maintenance , repair , diagnostics and repair . This paper studies the history of the development of the IETM , experienced the the electronic images paging index document its technical structure , the scrolling electronic document , linear structured of IETM , the hierarchical structure of IETM , integrated database IETM5 basic stages of development . Currently , four hierarchical structure IETM technology development has been more mature and widely used in weapons and equipment maintenance and training areas . The five integrated database IETM technology due to the introduction of expert systems and artificial intelligence mechanisms , structure more advanced technology and good prospects for the application of interactive electronic technical information system , all countries competing in the direction of research and focus on the development . Summarizes IETM development process and existing technology development status based on in-depth study of of IETM technology and model structure , in the hierarchy of the the IETM model structure based on a four - level to 5 transition model interactive IETM system model , the realization of such a model search engine model , on the basis of analysis of the principle of the forward maximum matching algorithm , the introduction of the concept of the word spacing , an improved method is given , so that when improved forward maximum matching algorithm segmentation , eliminating an ambiguous word has been greatly improved ; fault diagnosis technology contributions to the realization of this model to study the characteristics of the IETM expert system knowledge base and the inference engine , the membership function of the fuzzy set theory to achieve fuzzy matrix of knowledge representation and reasoning , a reasoning algorithm based on fuzzy matrix to improve the efficiency of the the IETM expert system inference .