Method for increasing the accuracy and time reduction of measurement the frequency of periodic signals for technological process control systems

In article the new method allowing to determine the frequency of periodic signals for a signal period share is considered. The method provides an exception of a frequency error and an error on module of phase shifting units used for formation the additional signals. Realization of method provides time reduction and increasing in accuracy of measurement. Results of analysis the error of measurement the frequency because of deviation of a real signal from harmonious model and the angular error of phase shifting units are given. The received results allow to select an optimum angle of a phase shift of phase moving units and ratio between the model interval of time and the period of a signal proceeding from requirements for accuracy and time of measurement.