Shapiro M. Devices and methods for measuring humidity of grain and products of grain processing

Object of investigation: connection between the parameters of grain and its products after reprocessing with electrical and information parameters of circuit resonance converters (CRC) having inductive sensor and the channel to compensate main disturbing factor. Purpose of investigation: the purpose of this work is to develop and investigate the methods and ways to carry out operational control over humidity on the basis of CRC with inductive sensors and the channel to compensate main disturbing factor. Methods of investigations are based on the theory of electrical circuits; the theory of planning an experiment; identification; the theory of taking decision in uncertain conditions; regressive, disperse and correlation analysis; metrology and the theory of exactness; theory of probabilities and random signals. The following has been developed and investigated: scientific foundations of building up two-parameters humidity-meters with CRC and with the correction of the main disturbing factor. Novelty: -scientific foundations to synthesize CRC with inductive sensors, that function under the load as RC-models of the humid product, have been developed; the classification has been proposed; the investigation method has been developed; dispersing analysis of factors, that influence the error of measuring humidity with the help of discrete humidity meters and piled sensors, has been carried out; contribution of the factors into the resulting mistake has been evaluated; dominating character of the influence, exited by the measured product share, has been identified and the necessity to suppress it by algorithm means has been demonstrated; means and methods to suppress and stabilize the influencing factor have been developed; means and methods to implement corrections of the progressing errors have been offered; temperature correction algorithm has been synthesized; the method to select optimal in exactness means to form up a test sample has been developed; it has been manifested, that by the disperse Fisher ratioit is possible to group the tested cultures and products to measure in one device; the methods of structural-parametrical identification of algorithms, pertaining to measuring transformation, have been developed together with the procedure of parametrical identification, that is based on the criterion of minimal residual dispersion and searching optimization with utilization of the criteria of taking decisions in uncertain conditions; the algorithms of humidity measuring transformation, with the account of main disturbing factor, have been found, as well as the optimal in their exactness algorithms in the subsets of line regressive models, non-linear 4-member regressive models, non-linear 5-member regressive models; sub optimal algorithm has been traced in a great number of models. Implemented by CJSC "Khmelnitskiy Macaroni Factory", c.Khmelnitskiy; factory "Etalon", c. Luhansk; company "Appliances, systems, technologies", c. Kharkiv. Sphere of application: science - research of two-parameter characteristicsof express-appliances to measure humidity; practice - utilization of the developed appliances in food-processing industry to measure humidity content.