scholarly journals Research on Online Moisture Detector in Grain Drying Process Based on V/F Conversion

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Zhe Liu ◽  
Zidan Wu ◽  
Zhongjie Zhang ◽  
Wenfu Wu ◽  
Hexin Li
Keyword(s):  
Experimental System ◽  
Correction Method ◽  
Nonlinear Correction ◽  
Drying Process ◽  
The Core ◽  
Grain Moisture ◽  
Core Function ◽  
Grain Drying ◽  
Upper Computer ◽  
The Relationship

An online resistance grain moisture detector is designed, based on the model of the relationship between measurement frequency and grain moisture and the nonlinear correction method of temperature. The detector consists of lower computer, the core function of which is the sensing of grain resistance values which is based on V/F conversion, and upper computer, the core function of which is the conversion of moisture and frequency and the nonlinear correction of temperature. The performance of the online moisture detector is tested in a self-designed experimental system; the test and analysis results indicate that the precision and stability of the detector can reach the level of the similar products, which can be still improved.

Test Research and Parameter Analysis of Grain Drying Model

2011 ◽  
Vol 66-68 ◽  
pp. 573-576
Author(s):  
Chun Shan Liu ◽  
Wen Fu Wu ◽  
Jia Yao ◽  
Ya Qin Li ◽  
Chuang Liu
Keyword(s):  
Moisture Content ◽  
Air Temperature ◽  
Air Flow ◽  
Parameter Analysis ◽  
Mathematics Model ◽  
Drying Process ◽  
Drying Time ◽  
Hot Air ◽  
Grain Moisture ◽  
Grain Drying

The purpose of this study is to explore the effecting principle in the drying process. The factors such as hot air temperature, hot air flow, drying time on the grain moisture content have been all investigated. Using UD to establish the optimization mathematics model which making the grain dryer moisture content as the goal of the design, making the factors of hot air flow, drying time, air temperature as parameters, with the help of UD to analysis the effecting principle of the drying process parameters on the grain moisture content, some references have been provided to the tower dryer.

Analysis of Experimental Research Results Obtained for Grain Drying With Electrically Activated Air

2019 ◽  
pp. 230-255 ◽  
Author(s):  
Alexey Nicolaevich Vasiliev ◽  
Alexey Alexeevich Vasiliev ◽  
Dmitry Budnikov ◽  
Gennady Samarin
Keyword(s):  
Experimental Research ◽  
Thick Layer ◽  
Regression Equations ◽  
Drying Process ◽  
Air Ions ◽  
Drying Time ◽  
Grain Moisture ◽  
Grain Drying ◽  
Activation Criterion ◽  
Heat And Moisture

This chapter presents an analysis of factors influencing the heat and moisture exchange for their further use in experimental research to study the process of grain drying with active ventilation. The temperature and velocity of the drying agent and grain moisture content are determined. One centimeter (1 cm) thick layer is considered to be a thin layer. This size appears to be very manageable to transfer the regularities of the drying process to a thicker layer when modeling the drying process in a thick layer. The experiment was carried out for three drying modes: classical mode (i.e., drying of grains with natural and heated air), with a constant concentration of air ions in the drying agent, with cyclic (periodic) presence of air ions in the drying agent. Using the regression equations produced a so-called electro-activation criterion can be described. The dependencies obtained would help to optimize the drying process with respect to drying time criterion.

scholarly journals Model Predictive Control of the Grain Drying Process

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Feng Han ◽  
Chuncheng Zuo ◽  
Wenfu Wu ◽  
Junxing Li ◽  
Zhe Liu
Keyword(s):  
Virtual Instrument ◽  
Germination Rate ◽  
Digital Simulation ◽  
Drying Process ◽  
Automated Control ◽  
Grain Moisture ◽  
Grain Drying ◽  
Dry Food ◽  
The Stability

Drying plays an important role in the postharvesting process of grain. To ensure the quality of the dried grain and improve the intelligent level in drying process, a digital simulation of corn drying machine system based on a virtual instrument was established for 5HSZ dryer, automatically control the air temperature, and predict the discharging speed of grain and so forth. Finally, an online measurement and automated control software of grain parameters were developed to provide the changes of moisture, temperature, humidity, and germination rate in the process of drying. The study carried out in the actual processing showed that it can meet the requirements of the actual drying operation, effectively control the stability of the grain moisture, and keep the dry food quality.

scholarly journals MATHEMATICAL MODELING OF GRAIN DRYING

2003 ◽  
Vol 8 (2) ◽  
pp. 103-112 ◽  
Author(s):  
R. Čiegis ◽  
T. Leonavičiene ◽  
V. Skakauskas ◽  
O. Suboč
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Numerical Experiments ◽  
A Priori ◽  
Simplified Model ◽  
Discrete Solution ◽  
Drying Process ◽  
Grain Moisture ◽  
Grain Drying ◽  
The Mathematical Model

In this paper we consider the mathematical model which describes the grain drying process. The air and grain moisture and temperature are described by a system of PDE. A finite difference scheme is proposed for finding a numerical solution. The convergence of the discrete solution is proved for a simplified model, when the temperature is assumed to be given a priori. Results of numerical experiments are presented.

In a word, I’ve been there

2019 ◽  
pp. 246-256
Author(s):  
A. K. Zholkovsky
Keyword(s):  
The State ◽  
Female Characters ◽  
Political Situation ◽  
The Core ◽  
The Relationship ◽  
Core Problem ◽  
Typical Solution

In his article, A. Zholkovsky discusses the contemporary detective mini-series Otlichnitsa [A Straight-A Student], which mentions O. Mandelstam’s poem for children A Galosh [Kalosha]: more than a fleeting mention, this poem prompts the characters and viewers alike to solve the mystery of its authorship. According to the show’s plot, the fact that Mandelstam penned the poem surfaces when one of the female characters confesses her involvement in his arrest. Examining this episode, Zholkovsky seeks structural parallels with the show in V. Aksyonov’s Overstocked Packaging Barrels [Zatovarennaya bochkotara] and even in B. Pasternak’s Doctor Zhivago [Doktor Zhivago]: in each of those, a member of the Soviet intelligentsia who has developed a real fascination with some unique but unattainable object is shocked to realize that the establishment have long enjoyed this exotic object without restrictions. We observe, therefore, a typical solution to the core problem of the Soviet, and more broadly, Russian cultural-political situation: the relationship between the intelligentsia and the state, and the resolution is not a confrontation, but reconciliation.

The relationship of magnates and the szlachta of the Great Principality/Grand Duchy of Lithuania with Russia in 1733

2020 ◽  
Author(s):  
А.В. Мацук
Keyword(s):  
Free Choice ◽  
Russian Empire ◽  
The Core ◽  
The Russian Empire ◽  
Grand Duchy Of Lithuania ◽  
Relationship Of ◽  
The Relationship ◽  
Grand Duchy

В статье исследуются события бескоролевья 1733 г. в Речи Посполитой. Согласно «трактату Левенвольде» компромиссным кандидатом на избрание монархом Речи Посполитой был португальский инфант дон Мануэль, которого предложила Австрия. Россия больше склонялась к кандидатуре «пяста». Россия оказалась не подготовленной к началу бескоролевья. Бывшие российские союзники магнаты ВКЛ рассорились с российским послом Фридрихом Казимиром Левенвольде и перешли на сторону Франции. В конце февраля 1733 г. в ВКЛ направили Юрия Ливена, который от имени российской царицы предложил поддержку в получении короны Михаилу Вишневецкому и Павлу Сангушке. Принятое на конвокационном сейме решение об избрании королем «пяста» и католика показало популярность Станислава Лещинского. В результате вслед за Австрией Россия поддержала кандидатом на корону Фридриха Августа. Магнаты ВКЛ до последнего оставались конкурентами о короне. Оппозиция Лещинскому объединилась под лозунгом защиты «вольного выбора» и поэтому в ней остались кандидаты «пясты», которые не могли уступить друг другу, и согласились на компромисс – кандидатуру Фридриха Августа. Для противодействия возможному избранию Лещинского Россия создала в ВКЛ новоградскую конфедерацию. Ее организатором стал новоградский воевода Николай Фаустин Радзивилл. Эта конфедерация становится основой Генеральной Варшавской конфедерации, которая 5 октября 1733 г. избирает королем саксонского курфюрста. The article examines the events of the «kingless» year of 1733 in the Polish-Lithuanian Commonwealth. According to the Levenwolde Treaties the compromise candidate for the Commonwealth’s throne was the Portuguese Infante Don Manuel, who’s candidacy was proposed by Austria. Russia, in turn, leaned towards the «pyasta» candidate. The Russian Empire was clearly unprepared for the start of the kingless period. Russia’s former allies – magnates of the Grand Duchy of Lithuania – came into conflict with the Russian ambassador Frederick Kazimir Levenwolde and sided with France. In late February of 1733, Empress Anna Ioanovna of Russia sent Yuri Liven to the Grand Duchy of Lithuania, who offered official support in the struggle for the crown to Mikhail Vishnevetsky and Pavel Sangushka. The electoral decision made at the Sejm proved the popularity of the «pyast» and Catholic candidates, specifically – Stanislaus Leschinsky. In turn, Russia – following Austria – showed its support for the candidacy of Frederick August. The magnates of the Grand Duchy of Lithuania remained in opposition in the crown issue until the very last. Opposition to Leschinsky was united under the motto of «free choice». For that reason, it was comprised of «pyasta» candidates, who were in a deadlock with one another, and were now ready for the compromise candidacy of Frederick Augustus. In order to counter the possible election of Leschinsky, Russia created the Novograd Confederation in the Grand Duchy of Lithuania. It was organized by the Novograd Voevoda Faustin Radzivill. This confederation became the core of the General Warsaw Confederation that – on October 5th 1733 – elected the Saxon King to the throne of the Polish-Lithuanian Commonwealth.

All Hail to the Archpriest

2019 ◽  
Author(s):  
Peter Lake ◽  
Michael Questier
Keyword(s):  
Seventeenth Century ◽  
Church And State ◽  
Good Deal ◽  
The Core ◽  
Public Argument ◽  
The Relationship ◽  
Public Politics

This volume revisits the debates and disputes known collectively in the literature on late sixteenth- and early seventeenth-century England as the ‘Archpriest Controversy’. We argue that this was an extraordinary instance of the conduct of contemporary public politics and that, in its apparent strangeness, it is in fact a guide to the ways in which contemporaries negotiated the unstable later Reformation settlement in England. The published texts which form the core of the arguments involved in this debate survive, as do several caches of manuscript material generated by the dispute. Together they tell us a good deal about the aspirations of the writers and the networks that they inhabited. They also allow us to retell the progress of the dispute both as a narrative and as an instance of contemporary public argument about topics such as the increasingly imminent royal succession, late Elizabethan puritanism, and the function of episcopacy. Our contention is that, if one takes this material seriously, it is very hard to sustain standard accounts of the accession of James VI in England as part of an almost seamless continuity of royal government, contextualized by a virtually untroubled and consensus-based Protestant account of the relationship between Church and State. Nor is it possible to maintain that by the end of Elizabeth’s reign the fraction of the national Church, separatist and otherwise, which regarded itself or was regarded by others as Catholic had been driven into irrelevance.

A realistic model for transverse shear stiffness prediction of composite corrugated-core sandwich structure with bonding effect

2021 ◽  
pp. 109963622199386
Author(s):  
Tianshu Wang ◽  
Licheng Guo
Keyword(s):  
Present Model ◽  
Shear Stiffness ◽  
Realistic Model ◽  
Torsional Stiffness ◽  
Fem Model ◽  
The Core ◽  
Bonding Effect ◽  
Stiffness Model ◽  
Bonding Area ◽  
The Relationship

In this paper, a shear stiffness model for corrugated-core sandwich structures is proposed. The bonding area is discussed independently. The core is thought to be hinged on the skins with torsional stiffness. The analytical model was verified by FEM solution. Compared with the previous studies, the new model can predict the valley point of the shear stiffness at which the relationship between the shear stiffness and the angle of the core changes from negative correlation to positive correlation. The valley point increases when the core becomes stronger. For the structure with a angle of the core smaller than counterpart for the valley point, the existing analytical formulations may significantly underestimate the shear stiffness of the structure with strong skins. The results obtained by some previous models may be only 10 persent of that of the present model, which is supported by the FEM model.

Bare classifier phrases in Thai and other mainland Asian languages: implications for classifier theory and typology

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Nitipong Pichetpan ◽  
Mark W. Post
Keyword(s):  
Comprehensive Analysis ◽  
The Core ◽  
Core Function ◽  
Nominal Classification ◽  
Discourse Functions ◽  
And Gender ◽  
Referential Function ◽  
Asian Languages ◽  
Modern Standard

Abstract This article provides a comprehensive analysis of the little-known “bare classifier phrase” construction in Modern Standard Thai. It describes the syntax, semantics and discourse functions of Thai bare classifier phrases, and further proposes a diachronic account of their origin in reduction of post-posed numeral ‘one’. Following this synchronic and diachronic description, this article attempts to locate Thai within a working typology of bare classifier constructions in mainland Asian languages, and further argues for the importance of bare classifier constructions to the theory of classifiers more generally. Following Bisang (1999) and others, it argues that bare classifier constructions reveal the core function of classifiers in Asian languages to be individuation – a referential function. It therefore cautions against some recent proposals to merge classifiers and gender markers within a single categorical space defined on the semantic basis of nominal classification, and in favour of continuing to treat classifiers as a discrete linguistic category – in mainland Asian languages, at least.

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