E. L. Zhukovskii Journal of Computer and System Sciences Intrnational , Vol.37 No.3 , 01.1998 , p. 349-351, language: английский ISSN 1064-2307  Аннотация The frequency method based on the direct and inverse Fourier transform is the known method for finding transition functions for automatic control problems. In this paper, we propose a stable algebraization method to find the transition function using inexactly defined input data, when the integer Wiener–Hopf equa- tion is reduced to a conditional system of algebraic equations using a grid approximation.  Ключевые слова automatic control, inverse Fourier transform, integral Wiener-Hopf equation