Industrial Automatic Control Systems and Controllers Annotation << Back Graphical Method of Design Controllers, Which Provides a System for a Desired Stability Specifications Mikhalevich S.S. Baydali S.A. Chursin Yu.A. There is a graphical design of PI controller, which provides a system to specified stability specifications. The required values of the frequency domain performance measure namely the gain and phase margins performance are defined prior to the design. For correct design first of all find the global stability region, and then find the local stability region with specified stability performances. Then the required settings of controller find as such proportional gain which provide the most integral part and locate in the global stability region. This article displayed the most important equations which was use in creation stability regions. Authors tried to use proposed method for design a PID controller and find the global and local stability regions. This work does not finished yet, because some special investigations are required. Keywords: regulator; stability region; automatic control system; indicator of stability; amplitude margin; phase margin. Contacts: E-mail: anopt@ya.ru Pp. 35-39.