METROLOGICAL CHARACTERISTICS INCREASING OF INFORMATION MEASUREMENT CONTROL SYSTEM OF A PROPULSION SYSTEM

Frolov Mihail Alekseevich, postgraduate student, Penza State University; head of department, Scientific-research Institute of physical measurements, frolov10061987@gmail.com
Frolova Ol'ga Aleksandrovna, process engineer 1 category, Scientific-research Institute of physical measurements, karinak@list.ru
Musaev Ruslan Shabanovich, candidate of technical sciences, head of the center 3, Scientific-research Institute of physical measurements, polim@mail.ru
Salmin Aleksandr Vyacheslavovich, head of department, Scientific-research Institute of physical measurements, salminab@mail.ru

681.518.3

The structure of information measurement control system of a propulsion system is shown in the form of the block-scheme, its parts has been considered, particularly measurement part of capacitive pressure sensor. The construction of capacitive pressure sensor is shown and transformation function of output signal «capacity – code» from measurement of pressure of measured environment, which allow to decrease time designing for of capacitive pressure sensor as part of information measurement control system of a propulsion system, has been received. The calculation technique of metrological characteristics for capacitive pressure sensors with a digital output, which can give a tentative estimation of basic and additional error with using of the calculated graduation characteristics, has been developed. The results of preliminary tests of five samples of capacitive pressure sensors in operating conditions of information measurement control system, which allowed to confirm the declared metrological characteristics of investigated system, are shown.

information measurement system, capacitive pressure sensors, propulsion system, metrological characteristics, technique, mathematical model.