Aerospace Instrument-Making Annotation << Back Signs of class and determination of concept “technical systems” N.P. Kirillov Functional signs of the objects which are belonging to the class “technical systems” are defined. Verbal definitions of concepts “technical system”, “technical subsystem”, “device” and “detail” which had till now no the proved formulations allowing correctly to carry out classification and division on these categories of various technical objects are formulated. The received results allows to pass to subject research of the general properties of processes of functioning of technical systems for the purpose of working out of prototypes and methods qualimetry models of this class of objects. Key words: Technical system, creation of knowledge, modeling in the problem space, ontology. E-mail: knp@mail.ru