Models of control systems with dynamic frequency pulse modulation

The paper is concerned with control systems with dynamic frequency pulse modulation of an arbitrary form. The modulator is shown to be representable as an equivalent closed-loop system. The structure of this system is found for an ideal and a real modulator. Modulator models are obtained for the cases where a linear filter or a filter with power nonlinearities are used. Examples illustrate the equivalence of a dynamic frequency pulse modulator and its model. The latter is used for design of a calculation automatic model with a dynamic frequency pulse modulator.