The new simulation methods of linear stochastic processes were developed. They allow to obtain the member functions of such processes using computers. The wide class of kernel functions and generic process can be applied. Using developed methods the simulation of informational processes was realized. The estimators of diagnostics parameters were calculated and their probabilistic parameters were determined. The results of simulation confirm the theoretical conclusions. They sufficiently agree with experimental results, obtained on the diesel generator.
The prototype of information measuring system for diagnosing of diesel generators was created. It can measure the vibrations of diesel generator and angular velocity of its shaft. Data are entered automatically into computer. Special software was created that can process input data, calculate the estimators of diagnostics parameters, take a decision about status of diesel generator and display it on the screen of computer.
The errors of measurements can be divided into errors of method and instrumental errors. The first ones are presented by the reliability of diagnostics decisions. The Neyman-Pearson criterion is used to take a decisions about status of diesel generator. It gives a possibility to consider the reliability of decisions, what cannot be done using deterministic approach to the diagnostics, and what is more, the reliability can be specified by operator before diagnosing.
The new method was developed, which enables to find experimentally the parameters of instruerrors. It is based on the statistical linearization. This method can be applied to the systems contaiADC. Using this approach, the “inner” parameters of ADC, as binary digits quantity, discretization step etc. can be omitted. The instrumental errors of measurements were analyzed theoretically and determined experimentally using the developed method. Results are included into the dissertation.
Key words: technical diagnosing, statistical approach, linear periodic processes, diesel-electrical generator.
Підписано до друку 9.04.2001. Формат 60х90/16
Папір офсетний. Формат видання 145х215 мм.
Умовн.–друк. аркуш 1,0. Об.–вид. аркуш 1,0.
Тираж 100. Замовл. 144.
Поліграф. дільн. Інституту електродинаміки НАН України
03680, Київ–57, проспект Перемоги, 56