FREQUENCY FEATURES OF THE NUMERICAL METHOD SAMPLING OF DIGITAL CONTROL SYSTEMS

Context. The studies of the frequency properties explicit multistep numerical integrators which use for sampling continuous transfer function in digital control systems, are conducted this article. Numerical such systems implement as an integral parts regulators. Objective. goal research is analysis behavior different orders, areused to discretize order study their impact on synthesized system. Method. methods integration considered filters, studied by characteristics method. To do this, z-transform apparatus was used. Integrators’ discrete functions were found using Control Systems Toolbox package mathematical application MATLAB. For further analysis, two closed feedback test structures used: with forward channel and loop. Both variants method 1st–6th orders. Results. inefficiency high-order systems’ discretization shown. Given most rational low-order integrators, namely – first second Establishing cause phenomenon requires additional research, particular, identify possible zeros poles integrators. Conclusions. sample proven.