Power installations geometrical parameters optical control method steady against thermal indignations

Abstract

The analysis of optical signals distortions statistical properties of contactless control of heat power installations is carried out. It is established that image distortions have normal distribution and stochastic characteristics in conditions existence of phase refraction distortions. It is shown that to ensure dynamic objects control in conditions of refraction distortions, it is possible to apply optical radiation spatial modulation based methods. Heat power installations geometrical parameters complex control allows to significantly increase working resource of a difficult power system and practically exclude emergence probability (1). Optical control methods are most perspective as they are contactless and provide rather high metrological characteristics (2). Nevertheless, application of heat power installations parameters of optical control methods is strongly limited. It is connected with existence of refraction distortions of the optical signals in close proximity to the working unit caused by high temperatures, vibrations, existence of water and buttered aerosols in the measurement field. The purpose of this work consists in statistical property research of optical signals distortions and optical control method development steady against refraction distortions of optical signals. Let refraction heterogeneity, caused by the drifting temperature gradients of the air, are available in the optical environment located between radiation source and object and between object and the optical signal receiving system. As a result refraction light index in the optical environment that leads to distortions of an optical signal will change. The deviations created by phase n0 uniformity will have stochastic characteristics. We will consider the monochromatic wave extending in the set volume. Air refraction index can be presented in the form n(r,t) = n0 + n1(r,t).