The temporal type optoelectronic analog-to-digital linear displacements transducer with different methods of frequency errors correction is considered. The function circuit of the transducer with automatic frequency control is presented. The main functional dependences and the assessment of efficiency of compensation are given.

A method of parametric identification of dynamic systems described by partial differential equations with variable coefficients is considered.

The calculation ratios for the quality assessment of information-measuring and control systems have been proposed. These ratios allow to optimize the adjustment factors of virtual instrument for measuring the criterion of control by its metrological characteristics.

The experimental studies magneto-optical current measuring instrument to assess several factors affecting the readings are carried out. The new schemes of magneto-optical current measuring instruments allowing to increase the measurements accuracy are proposed.