Abstract. Digital following systems with calculation devices providing a low speed of mismatch evaluation characteristic for automated control systems of industrial process of first generations. An increase in the rate of change of the driving influences requires an improvement in dynamic accuracy of the DCS of the support-rotary devices. A radical means of increasing dynamic accuracy is the elimination of the speed error and errors in the acceleration of the MSC. It is shown that an effective increase in the dynamic accuracy of the automatic control system of the automated process control system is possible to achieve without significant changes to the MSC itself, with the help of the control for the mastering signal being processed according to the proposed algorithm. The possibility to obtain a high quality of transient processes in a closed loop is demonstrated, while at a low rate of error calculation it is impossible to achieve low oscillation of the transient processes caused by jumps of the driving force.

Keywords: compensation, high-speed mistake and acceleration mistake, low speed of mismatch calculation

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