Rutkovsky V.Yu., Sukhanov V.M., Glumov V.M.
A system for power train’s shaft torsion angle evaluation with the help of two induction rotating speed sensors. Part 1
The paper solves the problem of extending the informational capabilities of a standard rotating speed measuring system for a power train shaft of power plants. The problem is solved by additional processing of data arrays from discrete outputs of two induction rotating speed sensors with minimum intervention into the measuring system design.
Balakin S.V., Dolgov B.K., Filin V.M. Operation experience of liquid-propellant rocket fueling control systems as a basis for new generation system development
The unique of development and operation experience of the capacitance fueling control system (FCS) used in Energy–Buran space shuttle is presented. The system is a property of S.P.Korolyov Energy Space Rocket Corporation. The paper discusses key components of fuel tank level measurement error and the ways to implement FCS measurement channels on the basis of digital extremal a.c. bridges developed by Energy Corporation. The experience of previous generation FCS operation is used for the development of the new generation system underlain by the method of indirect one-port impedance measurement in the presence of a long communication line for capacitance sensors. Procedural and structural solutions implemented in the new generation FCS are presented.
Druzhinin A.A., Maryamova I.I., Kutrakov A.P., Pavlovsky I.V. On the possibility to create high-sensitive piezoresistive mechanical sensors for cryogenic temperatures
The performance of semiconductor strain gages based on p-type silicon microcrystals with different impurity doping, mounted on springing elements made of the invar alloy were studied in the temperature range 4.2…300 K. The paper shows that the development of high-sensitive mechanical sensors operable in liquid helium temperature range is possible on the basis of giant non-classic piezoresistance in p-silicon using silicon strain gages with boron doping near metal-insulator transition from the insulating side.
Koptev V.S., Prokhorov A.V., Sychev G.I. State of the art and development prospect of electromagnetic flow and heat meters.
The paper overviews world and domestic electromagnetic flowmeter market and analyses the performance of the instruments from world’s leading vendors.
Soborover E.I., Zayblov V. SAW Element without sensing layer as a gas and gas mixture sensor. Part 4. Helium-based gas mixes. Abnormal behavior of SAW device in an superlight gas flows
The paper provides some data on abnormal behavior of SAW device as part of a delay circuit without sensing layer in methane/helium mixes. It also presents SAW frequency change curves in air, helium, and hydrogen flows. All data is obtained under the direct interaction of SAW device surface with gas.
Kalach A.V., Shul’ghin V.A., Yukish V.A., Yukish A.V. Signal acquisition from
piezoelectric sensors in the “electronic nose” system
The paper describes a multichannel system for data acquisition from piezoelectric sensors included in the “electronic nose”. The system is based on a programmable logic IC.
Andreev M.Ya., Matveev Yu.I., Okhrimenko S.N., et. al. A multi-channel temperature measuring and recording system for distributed objects
Design concepts and software of a multi-channel temperature measuring and recording system for distributed objects are discussed.
Filatov A.N., Shrago I.L. Design concept of training simulators for oil-and-gas production industry specialists
The paper describes the approach of ZAO AMT to development and manufacturing of multi-functional training simulators for oil-and-gas production industry specialist training.
Furmakov E.F. Investigation of hydrodynamic properties of water surface with the help of free-floating sensors
An unknown phenomenon of spontaneous thickening of water plane’s near-surface layer was discovered with the help of free-floating submagnetic and non-magnetic sensors.
Knorring V.G., Knorring L.N., Maramzina M.G., Trofimova N.Yu. Conceptual models of objects and experimental situations in measurement theory and technology
The paper notes that unlike replacement models the conceptual models of the objects under investigation and experimental situations are prerequisite and actually used in any measurement. It shows the relationship of conceptual models (in their structural and parametric parts) with a priori information about the object and experimental situation as well as with the problems of measurement methodology. Biological experiment is further considered as an example. The reasons of long-term insufficient attention to conceptual models are revealed.