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Author

Galaktionova Alla Anatol Evna

Bio: Galaktionova Alla Anatol Evna is an academic researcher. The author has contributed to research in topics: Signal & Voltage. The author has an hindex of 2, co-authored 4 publications receiving 9 citations.

Papers
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Patent
27 Jan 2009
TL;DR: In this article, the influence of resistance of key devices of multiplexers at the expense of feed of precision resistor sets RS1...RS7 SAC by a stable current is excluded.
Abstract: FIELD: physics, measuring. ^ SUBSTANCE: invention concerns the measuring technics, in particular, for metrological certification of multichannel multipurpose gauges of electrical quantities. High-speed key devices (multiplexers M1...M10) switched by signals of the microprocessor of the measuring and computing complex (MCC) are entered. Influence of resistance of key devices of multiplexers at the expense of feed of precision resistor sets RS1...RS7 SAC by a stable current is thus excluded. Calibrator outputs are connected to input circuits of operational MCC amplifiers. And feed of precision resistor sets RS1...RS7 by the "weighed" MCC cells is applied to separate types of data units for the purpose of an exception of the active devices (active neutralisation) in multiplexers (M1...M10) for error and noise reduction at formation of target voltages of the calibrator. ^ EFFECT: expansion of functionality. ^ 16 cl, 29 dwg

3 citations

Patent
27 Aug 2009
TL;DR: In this article, an automatic control system for testing machines and benches for endurance tests of mechanical structures has been proposed, which includes service signals delays, service signal pulse width shapers, switches, registers containing updated from section to section of program information about extremum numbers and their ordinates and memories successively storing after interpolation all intermediate points about currently generated program sections.
Abstract: FIELD: mechanical engineering. ^ SUBSTANCE: invention refers to the field of automatic control systems for testing machines and benches for endurance tests of mechanical structures. To solve defined task for each subgroup of local extrema (maxima and minima) including homonymous extrema of the same value, own accumulators of differences are used which provide correction of extrema for program control signal for each subgroup. Differences for each subgroup are accumulated until difference between feedback signal extremum and corresponding program signal extremum becomes equal to zero. To calculate true corrections correcting control signal extrema, the device has additionally included elements determining moments for calculating mentioned corrections and regulating order of information transmission between separate units of device. Such elements include service signals delays, service signal pulse width shapers, switches, registers containing updated from section to section of program information about extremum numbers and their ordinates, and memories successively storing after interpolation all intermediate points about currently generated program sections. To maintain constancy of average load rate, the device uses summing unit computing program section span, registers for temporary storing of this information and dividers dividing reference frequency depending on program section span value in such a way that constant average speed of each program section generation is provided independently from its span value change. ^ EFFECT: improvement of accuracy of loading for tested structures in the points of local extrema of testing program resulting in improvement of accuracy of products life time determination, as well as maintaining constant average loading rate for tested structures. ^ 4 dwg

2 citations

Patent
10 Jan 2009
TL;DR: In this paper, an analog-digital converter connected with microcontroller where control signals for converter are generated, measured signals are processed and digital equivalent of measurement result is formed, error reduction due to lowering noise from active elements and their parameters stabilisation because of galvanic separation of power supplies and interference resistance increase due to using bidirectional current supply of resistive sensor and its resistive equivalent.
Abstract: FIELD: electricity. ^ SUBSTANCE: invention is attributed to technical facilities for measuring non-electrical values using electrical method. Multichannel resistive sensors resistance - voltage converter contains reference voltage source, four sources of weighted voltage, two constant current sources, bidirectional pulse current modulator, current switch through which resistive sensor and its resistive equivalent is fed, voltage-operated outputs of which are connected via voltage switch to differential input of instrumental operating amplifier. Output of instrumental amplifier is connected to input of analog-digital converter connected with microcontroller where control signals for converter are generated, measured signals are processed and digital equivalent of measurement result is formed. ^ EFFECT: error reduction due to lowering noise from active elements and their parameters stabilisation because of galvanic separation of power supplies and interference resistance increase due to using bidirectional current supply of resistive sensor and its resistive equivalent and using measurement signal processing algorithm in which additive components in measured signal are essentially excluded. ^ 2 dwg

2 citations

Patent
27 Jan 2009
TL;DR: In this paper, a self-acting single calibration and correction for each type of the data units measured by the measuring and computing complex (MCC), including communications junction (CJ), programmed norming transformer (PNT), microprocessor (MP) and built in radio channel of communication (RC), is presented.
Abstract: FIELD: physics, measuring ^ SUBSTANCE: specified expedient is applicable to measuring and computing complex (MCC), including communications junction (CJ), programmed norming transformer (PNT), microprocessor (MP) and built in radio channel of communication (RC), for purpose of maintenance of operation of a complex in a wide gamut of temperatures (-40+50C) with high stability and accuracy of observed datas in it use procedures of self-acting single calibration and correction for each type of the data units measured by the MCC In the method in advance the spot points "i" in operational interval of the MCC temperatures and in the given point of temperature (ti) yield regular measuring, and at performance of procedure of calibration a gamut of codes of observed data break on "j" subbands where medial values Nj in a code equivalent of every subband readout correspond to the gauge values shaped by the self-acting calibrator of standards ^ EFFECT: decrease in error of device at expense of magnification of its speed, thanks to exception of additional gang of precision resistors fixing beginning and extremity of a gamut of measuring for all types and plans of linking of data units, served by MCC ^ 5 dwg

2 citations


Cited by
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Patent
30 May 2017
TL;DR: In this paper, a signal simulator of the bridge strain gauge sensors is presented, which is made according to the resistor bridge scheme, in which the arm resistances are equal to the nominal arm resistance of the strain gauge bridge sensor.
Abstract: FIELD: measuring equipment.SUBSTANCE: signal simulator of the bridge strain gauge sensors contains two switches and two resistor chains. The simulator is made according to the resistor bridge scheme, in which the arm resistances are equal to the nominal arm resistance of the strain gauge bridge sensor. Chains of the serially connected resistors are included between each pair of the resistors forming the bridge arms, which are supplied with the bridge power. Herewith one chain consists of m-1 resistors and has m-terminals, which are connected to the respective inputs of the first switch, the second chain consists of n-1 resistors and has n-terminals, which are connected to the respective inputs of the second switch. On the switch outputs, representing the measuring bridge diagonal, the number of the signal simulator steps is m×n; the number of the signal simulator steps is m in the presence of a single chain of m-1 resistors.EFFECT: use of the present invention will improve the signal reproduction accuracy of the bridge resistor simulator and the physical quantity measurement accuracy, when using the test bench measuring system, remote from the calibration bench, on which the bridge strain gauge sensors of various physical quantities were calibrated using the test bench measuring system.2 cl, 1 tbl, 1 dwg

3 citations

Patent
05 Jun 2013
TL;DR: In this article, a multichannel value of resistance automation measuring system consisting of a burn-in power source, a multi-channel electronic switch array, a data collector, a current-limiting resistance, a circuit protection unit and a computer is presented.
Abstract: The invention discloses a multichannel value of resistance automation measuring system The multichannel value of resistance automation measuring system comprises a burn-in power source, a multichannel electronic switch array, a data collector, a current-limiting resistance, a circuit protection unit and a computer, wherein the multichannel electronic switch array is a multichannel single-pole double-bladed switch array, according to a test requirement of arbitrary one-channel component in multichannel infrared devices, the channel component is disconnected with the burn-in power source and is connected with the data collector to finish automatic switch between a try state and a test state of the component; simultaneously, the data collector is used for measuring value of resistance of the switched component to achieve the aim that the value of the resistance is automatically measured By the adoption of a method that the computer sends command to a RS232 interface means of the data collector, the measured data are transferred to the computer to be stored; by the adoption of the system, the facts that the value of the resistance of the multichannel component is automatically measured and the data of the multichannel component is automatically stored are achieved, the rate, the accuracy and the data size of collecting component burn-in data are improved

1 citations

Patent
17 Apr 2018
TL;DR: In this article, a continuous analysis of the process of changing the parameters of primary sensors from the level of applied load is performed and when the output parameter of any sensor leaves the confidence interval, which can occur in the event of plastic deformations, macro-cracks or loss of stability of the structural member, the loading stops and the position of the structure is fixed in the initial stage of destruction while maintaining the integrity of the design for rapid analysis or refinement.
Abstract: FIELD: test equipment.SUBSTANCE: in the method a continuous analysis of the process of changing the parameters of primary sensors from the level of the applied load is performed and when the output parameter of any sensor leaves the confidence interval, which can occur in the event of plastic deformations, macrocracks or loss of stability of the structural member, the loading stops and the position of the structure is fixed in the initial stage of destruction while maintaining the integrity of the design for rapid analysis or refinement. The device contains a test object, a servo drive with a force sensor, a pumping unit, an automated load management system, a dynamic protection system and is capable of stopping loading by fixing (freezing) the servo drive rod, stopping the process of catastrophic destruction of the structure at its very beginning and maintaining the integrity of the structure, and further, relying only on the numbers that triggered the emergency stop of the sensors, localize the place of the beginning of the destruction on the structure for a visual assessment of the character on beginning destruction.EFFECT: localization of the weakest point in the tested structure with preservation of its integrity with the beginning of critical destruction, ensuring the necessary accuracy and reliability of recognizing the places where the critical destruction of the structure began during static tests and, as a consequence, the possibility of modifying the weak part of the structure with aiming to increase the operational loads and to increase the durability of the object in real operating conditions.2 cl, 1 dwg
Patent
16 Jun 2017
TL;DR: In this article, a bridge consisting of resistors R1, R2, R3, R4 and resistance R5, two power supplies, two operational amplifiers, the inverting input of the first operational amplifier is "grounded", the non-inverting input is connected to the resistance connection point R 3, R 4, and its output to resistance R 5.
Abstract: FIELD: electricity.SUBSTANCE: resistance increment converter contains a bridge consisting of resistors R1, R2, R3, R4 and resistance R5, two power supplies, two operational amplifiers, the inverting input of the first operational amplifier is "grounded", the non-inverting input is connected to the resistance connection point R3, R4, and its output to resistance R5, the other end of resistance R5 together with the connection point of resistors R1, R2 are connected to the inverting input of the second operational amplifier, the non-inverting input of which is "grounded" along with "grounding" of both power supplies.EFFECT: increasing the accuracy of the conversion of the increment of resistance to voltage.1 dwg