Bazhanov A. P., Mokrov E. A. Model accuracy estimation techniques for sensor reliability investigation, evaluation, and monitoring at different manufacturing stages
Accuracy estimation techniques were developed for the models used in reliability investigation, evaluation, and monitoring of sensors at specific stages of their manufacturing. Based on the decomposition approach, an equation was derived that describes the accuracy of the digital representation of the model precision estimate.
Vasiliev A. A., Gogish-Klushin S. Yu., Gogish-Klushina O. S., Kharitonov D. Yu. Gas sensors with thin alumina nanocrystal membranes as sensing elements
The paper examines the opportunity of using nanostructured alumina films to produce substrates for various type sensing elements of gas sensors. These membranes enable the develppment of various new types of sensors. The tests showed that the Al2O3 membranes 10…50 μm thick with the area up to 30 cm2 ensure sufficient mechanical strength, low thermal conductivity and allowed avoiding problems related with difference in thermal expansion coefficients of materials used in the sensor construction. The surface of the alumina films shows excellent adhesion properties for platinum heating elements and sensing layers. The alumina film sensors are a simple and cheap alternative to silicon micromaching technology.
Kozlov A. G., Scherbakova A. A. The effect of power supply conditions and design features on thermocatalytic gas sensor error
The dependencies of the output signal and the error of a thermocatalytic gas sensor on the change of power supply conditions for various reference element emissivities and methane concentrations are investigated. A mathematical model of these dependencies is proposed.
Borisov V. G., Nachinkina G. N., Shevchenko A. M. Research and development of methods fщк mobile object weight estimation
Dynamic equations of mobile objects motion were used for deriving 3 methods of weight calculation with respect to state variables measurements. The sensitivity of these methods to measurement errors at different stages of the mission were investigated. The research showed essential dependence of method error on the mission stage. Moreover, the characteristics of the installed instrumentation entail inadmissible weight calculation errors. To improve the weight calculation accuracy, a new method based on the calculation of mobile object’s full energy is offered. Its application at a horizontal section of a trajectory with no potential component of full energy enabled essential accuracy increase.
Vas’kovsky S. V., Morozov V. P. Logical design of electronic device debugging systems
An approach to logical description of component states during electronic device debugging and building thereupon debugging activities tables is described.
Ghetya S. I., Krapivtsev V. G., Perevesentsev V. V., et al. The experience of vibration accelerometers development and application for measuring vibration characteristics of fuel assemblies of water-cooled nuclear reactors
Small-size piezoresistive 2D vibroaccelerometers and measuring channels with analog integrating amplifiers are developed that enables data acquisition on vibrodisplacements of fuel elements in fuel assemblies of water-cooled nuclear reactors under test-bench conditions with the levels 5 μm or higher. The developed vibrometering technology was applied in wide research of hydrodynamically driven vibrations of fuel assemblies, and reliable data on vibrodisplacements was obtained subject to operating and structural characteristics of heat-carrying flow.
Bodrov V. E., Krayachich A. V., Podboronov B. P., Svirskiy Yu. A. Strength analysis software for TENZOR measuring and computing system
The paper describes the software for TENZOR measuring and computing system intended for measurements with a wide range of sensors, such as resistive-strain sensors, thermocouples, RTDs, etc.
Timoshenkov S. P., Zotov S. A., Kalugin V. V. The development of the complex-functional microelectromechanical drive
The design of a microelectromechanical drive is considered. Three kinds of etching: plasma-chemical, anisotropic, and isotropic are proposed for moulding the mechanical structure of the mobile element from single-crystalline silicon. Original solutions are discussed that ensure lower influence of parasitic degrees of freedom on drive’s dynamics, the improvement of sensors and actuators precision, resistance to overloads; drive motions fix at nanometer level; high durability of connection with relatively low mechanical pressure in a junction; lower device errors in wide temperature range applications. Key parameters of prototype models of the micro-electromechanical drive are presented.
Yasoveev V. Kh., Mirsky V. I. A new concept of secondary instrumentation design for petroleum accounting node
A new design concept of petroleum accounting node’s secondary equipment developed with the focus on reliability improvement is presented.
Burdinsky N. N. Specialized measuring system in automotive engine’s diagnosis system
A measuring system for investigating operating conditions of automotive engines is described. The system enables real-time high-accuracy data acquisition on diagnostic parameters of engine’s operation.
Ryzhov S. N. Vibration diagnostics tools for process equipment
The paper overviews the engineering data of the instruments from 5 Russian and 3 foreign vendors of vibration diagnostics equipment that could help in solving some new problems of industrial automation.
Nikolaev I. N., Unichenko P. O. Sensor explosives detector
A mockup of sensor explosives detector is developed and fabricated. The device enables quick detection of explosives’ vapors such as trinitrotoluene, dinitrotoluene, nitroglycerine, etc., at the concentration level of 10–12.
Knorring V. G., Trofimova N. Yu. System aspects of measurement
The subdivision of system aspects of measurement into theory and practice of the data acquisition systems (and also test and measurement systems) on the one hand and the system approach to measurement itself on the other hand is proposed and discussed. The system approach to measurement in its turn means either treating the measurement process as a system consisting of several elements or treating the same process as an element of a more complex system.