Petronevich V. V. Organization Principles and Functional Abilities of “POTOK” Software Package for Aerodynamic Experiment Automation

 

Organization principles, functional abilities and applications of a multifunctional software package developed in TsAGI for automation of aerodynamic experiment in wind tunnels are presented. The package provides real time operation of measuring and control subsystems integrated in a local network, complete data procession and presentation. Application of a package on real objects increases information amount and cost efficiency of tests.

Key words: software package, automation of aerodynamic experiment, real time modes, network communicator.

 

 

Chumachenko E. K. Real Time Informational Interaction of “POTOK” Software Package Programs

 

Structure of interaction of programs that synchronously operate on several local network computers during the wind tunnel experiment is presented. It is shown that it is possible to realize the real-time process and its technological subprocesses fulfillment using the method of program interaction by control, input and output data only in the case of presence of executed programs and net nodes description on which launching is executed in the experiment database. In this case dependence of each program from the fact to which node it is connected and by what other programs data is formed and where from data is got, is eliminated. It is achieved by adding two service programs to the software package. One of the programs provides local and network data exchange and the other serves as a a message dispatcher between programs.

Keywords: aerodynamic experiment, real-time process, structure of programs interaction.

 

 

Blokin-Mechtalin Yu. K. Multifunctional data acquisition and control software package for experimental aerodynamics

 

Multifunctional data acquisition and control software package of mainline-module architecture in international VME standard is presented. It is used in experimental aerodynamics. Structure principles, functional abilities and technical performances of the main data acquisition modules of the software package are described. Performances of the software package on the whole and its’ peculiarities and advantages are presented.

Keywords: mainline-module systems; data acquisition and control software package in VME standard; data acquisition modules of the software package.

 

 

Petronevich V. Blokin-Mechtalin V., Yu. K., Savin P. V., et al. Aerodynamic experiment complex automation in transonic wind tunnel ADT T-106

 

System of aerodynamic experiment complex automation in TsAGI transonic wind tunnel ADT T-106 is described. Data acquisition processes, Mach number and model a-angle of attack control is automated on the base of a new data acquisition and control system containing data acquisition software package IVK M2 and control software package VMIC. Results of model weight, drainage and combined experiments are presented. Stages of result processing are described.

Keywords: Aerodynamic experiment. Complex automation. Data acquisition system. Mach number and model angle of attack control system in a wind tunnel. Experimental data processing software.

 

 

Burov V. V., Volobuyev V. S., Glazkov S. A., et.al. Measuring and Computational System of TsAGI T-128 Transonic Wind Tunnel

 

Developed in TsAGI measuring and computational system of T-128 transonic wind tunnel is presented. Structure of a system, main performances of subsystems for measurements of aerodynamic loads, pressure distribution and flow parameters are shown. Features of a software applied in a given wind tunnel are described. Application of a system allowed increasing of aircraft models aerodynamic performances measurement precision in dozen of times.

Key words: transonic wind tunnel, angle of attack and sideslip angle mechanisms, compressor, aerodynamic loads, digital amplifiers, pressure field, flow parameters, aerodynamic experiment, server, visualization, barometric altitude, aerodynamic coefficients.

 

 

Bogdanov V. V., Veselov N. V., Panchenko I. N., et. al. Test rig for measuring object mass, center of gravity coordinates and moment of inertia

 

Equations for measuring mass, center of gravity coordinates and moment of inertia of the object are presented. Test rig realizing presented measurement equations is described.

Keywords: test rig, oscillating system, inertia tensor, mass, center of gravity coordinates.

 

 

Bogdanov V. V., Panchenko I. N., Chumachenko E. K. Digital signal processing and results of test rig investigation

 

Digital method of test rig oscillating system rotation angle processing is discussed. It allows signal amplitude, phase and natural frequency determination. Reference objects’ mass, center of gravity coordinates and moment of inertia measurement results are presented. Measurement errors are found.

Keywords: rejection filter, mass, center of gravity coordinates and moment of inertia.

 

 

Blokin-Mechtalin Yu. K., Bogdanov V. V., Panchenko I. N., et al. Data Acquisition and Control System of the Test Rig used for Determination of the Center of Gravity and Inertia Tensor of Space Vehicles

 

Data acquisition and control system of the test rig for determination of the center of gravity and inertia tensor of a space vehicle is presented. Structure of the system, technical and metrological performances of two modules are described. The first module is used for measuring static and dynamic signals of strain dynamometers. The second module is used for measuring angular oscillations sensors’ signals of the test rig measuring platform from electric motors and special control apparatus. Software used for acquisition, processing and presenting results of measurement is described.

Keywords: test rig for measuring the center of gravity and inertia tensor of the object, data acquisition and control system, software for determination of the center of gravity and inertia tensor of the object.

 

 

Beklemistchev A. I., Rodzevitch G. V., Sabrekov V. A. Test Rig (Special Standard) STA-1 for Metrological Studies and Strain Gauge Equipment Certification

 

Test Rig for metrological studies and certification of various strain gauge equipment is developped.

Keywords: test rig, metrology, strain gauge equipment, procession.

 

 

Samoilenko A. I., Maskayev V. K. Airflow Velocity Unit Operational Standard “EMS-0. 1/60”

 

Description and performances of an operational standard of airflow velocity unit within velocities range from 0. 1 up to 60 m/sec are presented. The standard is destined for metrological studies, calibration and verification of airflow velocity measurement means.

Keywords: airflow velocity, metrology, standard.

 

 

Beklemischev A. I., Chekrigin V. N., Blokin-Mechtalin Yu. K., Vlasenko V. M., Biryukov G. V., Shanigin Yu. A. SGD-4 test rig for metrological research and multipoint pressure module certification

 

SGD-4 test rig for metrological research, calibration and multipoint pressure module verification is described. Test rig structure, composition and metrological performances are presented. Functions of a unified software package UPK POTOK test rig is based on are described.

Key words: calibration test rig of pressure means, multipoint pressure modules, automatic pressure drive, temperature compensation, data acquisition software package, control software package.

 

 

Kartashev Yu. V. Method of HF disturbances nonlinear filtration in control systems

 

Method of HF disturbances nonlinear filtration in control systems based on information about the determined task signal for feedback signal variation rate limitation is described

Keywords: hydroelectric drive, program drive, normalizing converter, differentiator, controlled signal stop, integrator.

 

 

Mosharov V. E., Radchenko V. N. New method of surface flow visualization on the aerodynamic models

 

New method of surface flow visualization is suggested. The idea of new method is to register some small shift of oil film applied on investigated object surface and to restore the complete pattern of surface flow numerically. The results of method application for different flow investigations are presented.

Keywords: surface flow visualization, oil film method, cross-correlation analysis, particle image velocimetry.

 

 

Garibaldy A. V., Kulesh V. P. Measurements of the surface shape with high density of points and creation of the digital models of the non-technical objects

 

The design and operation of the videogrammetry system with light sheet (3D scanner) is described. Such the system provides measurements of the surface shape with high density of points. The technique and the results of measurement system calibration are considered. The estimations of typical accuracy are presented. The algorithms of measurement results processing and of the reconstruction of investigated object numerical model are described. The application of this technique to the creation of numerical models of the archeological finds fragments bank, and the results of the reconstruction of the ancient IV-V B. C. Greek bath view are presented.

Keywords: geometric parameters measurement, measurement with high density of points, optical methods, videogrammetry, numerical model

 

 

Jashitov V. E., Panhratov V. M., Barulina M. A., Golikov A. V. Harmonic solid-state inertial information sensor in temperature disturbances conditions

 

Coupled hierarchical mathematical models of thermal processes and finite elements models of thermoelastic mode of deformation of harmonic solid-state inertial information sensors are constructed and explored. Analysis of external and internal temperature disturbances influence on sensor temperature fields was carried out, and a possibility of control of these fields was shown. Analysis of thermoelastic mode of deformation was carried out both for separate sensor's resonator and device as a whole. Quantitative estimates were obtained and recommendations for ensuring of effective sensor functioning were worked out.

Keywords: harmonic solid-state inertial information sensor, thermal processes, temperature fields, modes of deformation, finite elements model, temperature disturbances.

 

 

Simonov V. N. Piezo-resonant sensors of nanosize films parameters

 

We consider the use of a known class piezo-resonant sensors in the problems of research and process control parameters of such nanoscale objects such as thin and ultrathin films. The basic technical parameters and possibilities of piezo-resonant sensors for nanotechnology. A review of the most famous examples of piezo-resonant sensors in the world and domestic practice.

Keywords: quartz resonator, nanobalance, picobalance, nanoscale films

 

 

Grishin V. A. Two-channel algorithms of  match making in computer vision systems

 

Image processing in two channels with substantially different resolution is proposed as a method of computational costs reduction in computer vision systems. Specifics of  such solution and their analysis are considered.

Keywords: computer vision system, match making algorithms, computational costs, real time onboard systems, image processing with different resolution.

 

 

Lobanov P. Yu., Manuailovich I. S., Sidoryuk O. E. Electrooptical modulators in fast filters for optical sensors

 

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Keywords: electrooptical modulator, spectral filter,  DKDP crystals.

 

 

Bocharov Y. I., Butuzov V. A., Gumenyuk A. S., et al. Autocalibration system improves the accuracy and power efficiency of pipelined CMOS ADC

 

The paper describes novel digital autocalibration technique of pipelined ADC. It provides correction of capacitors mismatching errors, operational amplifiers gain errors and MOS

switches charge injection errors. The estimation of correction coefficients for each of pipeline stages is provided by succeeding stages. The method is effective for correcting of channel's mismatching errors in multi-channel time interleaving ADC, because it requires no extra measurements. Calibration makes it possible to reduce capacitors of stages without their linearity degradation. It leads to reduction of ADC power dissipation.

Keywords: conveyor ADC, CMOS ADC, digital automatic calibration, correction, poer consumption decrease, energy efficiency

 

 

Volik B. G. Operability of control systems

 

Parameter’s set of systems, controlling objects with complex structure, which determine operability of such systems and require an evaluation on its design stage, is discussed.

Keywords: functional operability, exploitation operability, reliability, survivability, anthropogenic safety, efficiency.