The article deals with the problem of identifying the dynamic parameters of the resonator of a solid-state wave gyroscope, based on the signals measured when the sensor is operating in free-run mode. The search for the dynamic parameters of a solid-state wave gyroscope is one of the most important operations of the quality control of its production. The paper describes two methods for determining the physical parameters of a quartz resonator of a solid-state wave gyroscope. For each method, the mathematical substantiation of the relationship between the dynamic behavior of the resonator and its physical parameters is given. On the basis of each of the techniques, an algorithmic support for the extraction of the physical parameters of the resonator of a solid-state wave gyroscope is presented. The research of the accuracy of calculating the visual parameters by the described methods on experimental data of a resonator with known parameters has been carried out. The results obtained show the practical applicability of the described methods. An example of using the methods described in the work is the identification and control of the dynamic parameters of a quartz hemispherical resonator of a solid-state wave gyroscope at the technological stage of “balancing”.

The paper presents the calculated and experimental study of the measure of deterioration of accuracy characteristics of solid wave gyroscopes when adjusting their frequency from the resonance one. To do this, a simulation model was built, which was researched in the Matlab package. The measurement device is modeled at the alternating and direct current. It is shown that the measure of mismatch of the calculation grid with the period of vibrations of the gyroscope resonator was the main reason for errors in calculating the angle of the gyroscope in the simulation model. This is confirmed by the graphs of dependencies of errors on the deviation of the excitation frequency from the resonance one. Experimental studies on laboratory models of non-industrial production confirmed the principle possibility of making a solid-state wave gyroscope design without the contour of phase auto-adjustment frequency, without a significant loss of the accuracy. To do this, three models of low-precision gyroscopes were created and researched. In the first layout, a variable-current measuring device was used, and the parametric swing of oscillations was performed by one ring electrode with an additional inclusion of a different-frequency correction path with sixteen electrodes. In the second layout, the previous diagram replaced the measuring device for working on a direct current. The third mock-up examined a two-channel eight-electrode control system. On all layouts it was permissible to work at the excitation frequency deviation from the resonant 5 kHz equal to the value (20 Hz). At the same time, the form of the systematic drift function has not changed much. And its amplitude and random error rate also changed acceptably.