Automatic control system of combustion processes based on the methods of contactless optical spectroscopy

摘要

This article reflects the application of optical spectroscopy methods in automatic control systems of combustion processin thermal power plants and different transport systems engines. Forming of controlled states and error signals is carriedout by means of the multichannel optical spectrometer where the spectral decomposition is based on a resonancephenomenon in the narrow-band optical interference filters on the measurement data of the electromagnetic radiationspectrum as one of the results of the combustion process. This device carries out the contactless spectrum analysis in thepredetermined optical ranges using a set of narrow-band interference optical filters tuned to certain wavelengths andfiber-optical system using for analyzed optical radiation transmitting. This radiation carries the spectroscopic informationabout the controlled combustion process. Using fiber-optical system excludes the negative impact of various extremefactors on the spectrometer operation as part of the error signal forming system. The special principle of the developedmultichannel optical spectrometer construction allows applying not only one optical fiber but a fiber bundle. Thatincreases the sensitivity of the device without reducing of its resolution. The novelty of the developed device isconfirmed by the patent of the Russian Federation. This paper presents the results of the development of themultichannel optical spectrometer set-up and the results of its experimental research. The experimental research iscarried out to determine the spectral line of copper (Cu) when burning copper powder.