Steсiuk V. Improving of vibrational frequency stability of self-oscillatory piezoresonance devices in a mode multifrequency excitation of the quartz resonator.

In thesis it is presented piezoelectric resonators vibration frequency excitation compensation principle implementation theoretical and practical aspects owing to extension of piezoelectric resonators input signals information volume in the mode multifrequency excitation of quartz resonator. It has allowed to improve the accuracy characteristics of the radiotechnical devices given category and expansion the sphere of their application. The mathematical model of piezoresonance oscillatory system multifrequency is received to further development, that allowed to increase the accuracy of oscillation frequency vibrodynamic shift determination in the mode multifrequency excitation. The analysis of oscillatory system three frequency dynamic is conducted with relation to determination instability frequency components, which conditioned to the amplitude-phase conversion, the thermal process on the stage of self-heating of quartz resonator and the external vibrodynamic influence. The main results of the experimental investigation of the quartz resonators typical constructions vibration frequencies characteristics and the examples of use of the oscillatory systems piezoelectric resonators vibrocompensated in the devices of the digital television and the communication are brought.