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Devices and Methods of Measurements

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No 2 (2011)

Measuring instruments

5-12 886
Abstract

Construction techniques of precision measuring instruments of optical characteristics on the basis of two-wave lasers with use of basic and nephelometer methods are presented. System stability to changes of hardware constants, influence of an environment, pollution of optics is shown. The system automatically takes into account changes of a controllable line length that expands functionalities of a measuring instrument. 

13-19 894
Abstract

This article describes the main principles of implementation of modern adaptive signal lighting equipment of vehicles, provides an analysis of optical systems are used, the necessity of the use of LEDs. We present the design of adaptive optical system, rear combination LED lamp of a vehicle with several levels of intensity, we discuss the algorithm of its work in different modes. 

20-26 1809
Abstract

Models, simulations and experimental setups of resonant inspection robots are presented. The goal is to show ways to cope with the new requirements and to use the given chances to create novel mobile robots. For the creation of a directed motion the vibration behavior of simple beams and plates is used. It is possible to design robots for 2-dimesnional locomotion which are characterized by a light weight, small size, relative simple design and the ability to create controllable motion using only one actuator. Different types of actuators for micro robots are presented and compared. Furthermore the dynamical behavior of a piezoelectric bending actuator under elastic boundary conditions is investigated and a model for the motion of the locomotion-generating limbs is presented. The comparison with experiments and prototypes shows that the results of the analytical and computational models agree 

27-32 1924
Abstract
A method of creation of 3D flexible high-frequency microinductor on the base of polyimide film with etched swift heavy ion tracks, filled with a conducting material is proposed. This methos is more simple as compared with existing technologies. The service model of the microinductor having dimensions 0,04 mm3 is fabricated. This model has following main operational characteristics: winding density of 7 winding/mm at the winding thickness 10 μm; inductivity 0.3 mH with the Q-factor of 8 at 200 MHz. A possibility of the decrease of dimensions of the device down to 10-6 mm3 is shown. 
33-40 822
Abstract

It is considered the information-measuring and operating system of new generation for the multiturnaround electric drive of pipeline armature of high level of intellectualization. 

41-50 1027
Abstract

Problems of specialized analog integrated circuit design for sensor equipments are considered. It is offered to produce of radiation hardened analog IC on structured chips for economic efficiency at small production volume. The approach to analog IC design is described, including recommendations for choice of: types and quantities of structured chip analogue components; active and passive components; schematic decisions of analogue components with programmed parameters and small sensitivity to radiation. 

51-58 810
Abstract

The actuality of tonometry method and apparatus for non-invasive determination of biomechanical characteristics of cardiovascular system has been shown. The structural schemes of stationary and mobile variants of program and apparatus unit for hemodynamics monitoring of sportsmen has been presented. The comparison of methods of transmitting data on computer is been given. 

59-65 755
Abstract

Influence of the porosity of anodic alumina substrate on basic characteristics of four gas sensor microsystem has been determined. Dependences of the tensor components of modulus of elasticity and thermalconductivity coefficients as a function of α-Al2O3 porosity obtained by FEA were utilized in the calculations. 

66-70 762
Abstract

The method of addressed vibromechanical stimulation, apparatus for its realization and implementation example has been described. The development is seemed available and effective mean of intellectual ability improvement in responsible and social important kinds of activity. 

Methods of measurements, monitoring, diagnostics

71-74 823
Abstract

 Using of magnetorheological fluids (MRF) can reduce energy costs and weight and increase the devices speed and lifetime. In order to fully use all the qualities of MRF properties one must from time to time mix them and measure their properties. These systems are still being designed and tested in the laboratories. There are many structures with rheological fluid, but in many devices fluids are sealed and mechanical mixing and direct measurement of fluid properties are not possible. Effective stability control system for the rheological fluids, which supports homogeneity of the fluid, is described

75-80 1820
Abstract

Compound refractive lens was used for measuring size of 2-3 beamline Standford synchrotron radiation source and a size of microfocus X-ray tube. X-ray beam from the source was focused by the lens and parameters of the beam at image plane were measured. Scanning diaphragm and X-ray CCD-camera were used for measuring X-ray beam. It was found that the vertical size of synchrotron source is equal to 0,6 mm and the size of the X-ray tube focal spot is equal to 60 micrometers. 

81-87 901
Abstract

Parameters of high-moment electrical motor working at low-temperatures and high vacuum were investigated. It has been demonstrated that pressure in conspiracy with temperature does not influence starting current of the motor. Temperature reduction from 293 up to 143 K increases starting current at a factor of 3.5. 

88-91 938
Abstract
Мethod for the measurement and selection of reference materials for photoelectric method of spectral analysis of steels (according ГОСТ 18 895) shows for research on atomic emission spectrometer DFS-71. 
92-98 789
Abstract

The 3D-model of the star sensor was design in the Pro/ENGINEER program. Mechanical analysis of rigidity of the construction was carry out in MSC Patran program. The value of the deformation and equivalent stress by gravitation 1g and 30g for loading by axis XY, was carry out. Account of self frequency in range of 200 to 6000 Hz was compute, and for the first 10 modes were received shapes of oscillation of the device. 

99-103 893
Abstract

Metrological features of photovoltaic semiconductor converters (PSC) based on semiconductors with the multiple-charge impurities are investigated in a wide range of power densities of optical radiation. The algorithm of the measurement procedure of the metrological characteristics of PSC is introduced not only at low densities of optical power, but at high, taking into account the boundary of nonlinear recombination. The estimation of accuracy of feature finding of the metrological characteristics PSC based on semiconductors with the multiple-charge impurities, is carried out, taking into consideration the area of nonlinear recombination. 

104-108 776
Abstract

Methods allowing investigation of vibrations of the stainless steel waveguide by combining noncontact techniques with the state-of-the-art multiphysics software are developed. The vibrations of the waveguide, used in nowadays surgery are examined by the aids of the holographic interferometry technique, vibrometer based on Doppler shift of backscattered laser light and the virtual model of the waveguide is created by the Comsol Multiphysics software. 

109-115 770
Abstract
Designing principles of fringing electric field (FEF) sensors in the presence of a top ground plane bounding are considered. The analysis of characteristics, such as of penetration depth, working capacity, sensitivity to anisotropy of dielectric properties is given. Qualitative principles of designing are described, recommendations for optimizations of designs are given.
116-120 761
Abstract
A setup for broadband measurements of dispersion parameter in optical fibers based on the Mach–Zehnder interferometer is developed. Tm-doped fiber pumped at 1.61 μm was used as a source of broadband emission, that allowed to achieve the measurement spectral range of 1700 to 2000 nm. The method is applicable for comparatively short pieces of optical fiber with lengths of less than 1 meter. The method was successfully tested for the standard telecommunication SMF-28 fiber.
121-128 808
Abstract

New distinctive features of the elastic wave excitation and propagation when the Rayleigh wave probes used have been discussed. It was principally shown that such probes can be used not only to find surface defects but to find vertically oriented defects of the low reflection ability. Experimental dependences of the coefficient transformation of Rayleigh wave into edge waves vs. radius of the fillet transition have been got. Influence of the «accompanying» transverse mode excited simultaneously with Rayleigh wave on the resulting acoustic field formation in the projection volume have been investigated. 

129-135 798
Abstract

Work is devoted analytical methods of the vibrating diagnostics arising defects in the environment of ANSYS. The criterion of an estimation of a technical condition of elastic designs is offered. As a diagnostic sign of detection of defects in a material of an elastic body it is offered to use own forms of fluctuations with various parameters of supervision. For check of efficiency of the given way numerical experiment on an example of a flat plate is made. 

136-144 1858
Abstract

The comparative analysis of time-varying probe methods of measurement of a surface potential is held. Regarding contactless measurement of dielectrics' surface potential in a wide range of meanings, a current feedback scheme is found to be optimal. Advantages of this scheme are high spatial resolution, a wide measuring range and an independence of output signal on a probe-to-surface gap in a certain range of gap meanings. Metrological characteristics of the scheme are analyzed resulting in a mathematical expression for a normalized methodical measurement error.

Methods of quality estimation of products and processes

145-151 804
Abstract

The question of necessity of development and implementation of the Knowledge management system within the accredit measuring (testing) laboratory is being discussed. The conception offered is the methodlogy of expert system creation based upon ontologies for subjective areas of activities in the measuring (testing) laboratory, built on the base of process approach with the module principle. 

152-158 723
Abstract

The urgency of definition of the concept of quality of physical perfection in a context of quality of life is described. Necessity of application to the decision of the given problem of system approaches is shown. The structure of developed model of system of quality management of granting of service as complex of the interconnected systems is defined. Questions of maintenance of a complex of means and methods of an estimation of a condition of the client and definition of a technique of formation of the correct typical program of physical preparation of the client are allocated. 



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ISSN 2220-9506 (Print)
ISSN 2414-0473 (Online)