共查询到20条相似文献,搜索用时 0 毫秒
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N. V. Antonishin M. A. Geller A. L. Parnas 《Journal of Engineering Physics and Thermophysics》1974,26(3):353-356
The possible use of a hyperbolic equation to describe heat conduction in dispersed systems is analyzed. 相似文献
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V. G. Vasil'ev 《Measurement Techniques》1970,13(10):1488-1494
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Results are presented for theoretical research and modelling of a measuring channel for information measuring systems for
the volume of oil with a turbine oil discharge converter. The possibility of increasing accuracy is established. 相似文献
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Translated from Izmeritel'naya Tekhnika, No. 9, pp. 26–27, September, 1989. 相似文献
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V. B. Smolov 《Measurement Techniques》1961,4(11):890-896
Conclusions The above block schematics of universal multichannel coding functional converters can be used for making up automatic digital
measuring systems.
By means of these converters the measuring systems acquire computing characteristics which provide an evaluation and correction
of errors due, for instance, to the nonlinearity of continuous information transducers. Moreover, the functional coding operation
considerably widens the application of measuring equipment with a digital output by extending it to indirect measurements.
It should be noted that the solution of a similar problem of functional coding by combining linear coding converters with
electronic functional converters of a continuous type (for instance, diode functional converters) leads to more cumbersome,
less reliable devices whose coding accuracy is inferior to that of the functional devices described in this article. Moreover,
in using functional converters of a continuous type it is difficult to provide multiconditional coding operations.
Translated from Izmeritel'naya Tekhnika, No. 11, pp. 30–35, November, 1961 相似文献
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Conclusions The thermoelectric anemometer was tested under mining conditions for measuring the speed of air along underground workings. The tests have shown that the instrument is more accurate than existing impeller or cup-type anemometers and is suitable for measuring low air speeds. It is also possible to measure air depressions by means of this instrument, thus providing depression surveys by means of one instrument instead of two, namely, a microammeter and an anemometer which are normally used in mines. The instrument has three ranges: 0.001–0.3; 0.1–6 and 1–20 m/sec; its error is 1.5% and its over-all dimensions are 90×110×130 mm, with a weight of 1.2 kg. 相似文献
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Shashank Tamaskar Kartavya Neema Daniel DeLaurentis 《Research in Engineering Design》2014,25(2):125-137
We propose a framework for measuring the complexity of aerospace systems and demonstrate its application. A measure that incorporates size, coupling, and modularity aspects of complexity is developed that emphasizes the importance of indirect coupling and feedback loops in the system. We demonstrate how hierarchical modular structure in the system reduces complexity and present an algorithm to decompose the system into modules. The measure is tested and found to be scalable for large-scale systems involving thousands of components and interactions (typical in modern aerospace systems). We investigate the sensitivity of the measure and demonstrate the ability of the framework to identify incorrectness in system representation. The merits of the framework are exemplified through a case study comparing three spacecraft. The framework provides the designer with three key capabilities that can positively influence the aerospace (or other) design process: the ability to identify complex subsystems, the ability to classify misrepresentations, and the ability to trade-off commercially of the shelf (COTS) and non-COTS components. 相似文献
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This article examines aspects of the practical use of an information criterion in problems concerning the synthesis of systems
to measure random vibration fields. A relatively simple algorithm is proposed for determining the location of the transducers
on the given product, making it possible to create a measurement system with a moderate number of control points.
Translated from Izmeritel'naya Tekhnika, No. 2, pp. 37–39, February, 1996. 相似文献
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