Polonevich A. Synthesis of high-precision systems of phase locked loop of frequency

The object of study: the processes in the PLL. Subject of research: quality indicators PLL in the clock mode, namely dynamic and standard error for various deterministic and random defining and disturbing influences. In dissertation solved scientific problem of synthesis of phase locked frequency that enables to raise the work efficiency of synchronization network and the probability of the transmitted information. The main attention is paid to the methods of improving the quality of the systems PLL. The functional circuits have been developed, the mathematical models have been built and synthesis of opened connections to defining actions of the combined systems PLL have been executed under the terms of raising their accuracy and dynamic performance. This could eliminate the dynamic error in phase with the line archange of defining action stol im it the value of increasing errors changing within defining actions according to square law, to lower mean-squared error 3.05 times, and to raise the performance of the systems PLL in 5.5 times. For the first time shown to increase accuracy and dynamic performance of the system PLL can be achieved by the introduction of the system of differential operators, through which the indirect dimension by asking and disturbing actions. The functional scheme and mathematical model of the PLL with differential connection, which are equivalent to the combined system of disconnected communication by asking for disturbing and communication actions, communication of this system is synthesized under conditions of increasing precision and dynamic performance.