Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Model situational control complex processes V.B. MELEKHIN, V.M. KHACHUMOV The general approach to the construction of situational management model complex process in an unstable environment with fuzzy knowledge processing. We state the main problem to be solved for the construction of situational control model. The principles of construction of fuzzy controllers, justified the choice of a proportional-integral (PI) control. The problem of building a structure and the selection of controls in a variety of complex problem situations, when there is no mutual influence or control parameters when such influence in the decision-making process can be neglected. The mechanism of operation of a fuzzy PI controller, which provides the required accuracy of maintaining the process parameters at different character of their mutual influence on each other. Keywords: model of situational control, complex process, control parameters, a generalized description of situations, linguistic functions, the fuzzy proportional – integral controller. Contacts: E-mail: vmh48@mail.ru Pp. 25-30.