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778 results about "Quality characteristics" patented technology

A quality characteristic is an inherent characteristic of a product that says something about as aspect of the quality of the product. The use of a set of quality characteristics is recommended as a way to check for completeness of your test.

Classroom teaching auxiliary system

InactiveCN103258451AEnhance disciplineStimulate learning initiativeElectrical appliancesData acquisitionInteraction device
The invention provides a classroom teaching auxiliary system which comprises a data collecting device, a data interaction device and a data analyzing device, wherein the data collecting device and the data interaction device are connected in a wireless mode to carry out data transmission, and the data interaction device is connected to the data analyzing device through a data transmission cable. The data collecting device comprises an information collector which is used for checking-in, selecting, grading, voting and electronically raising hands, and at the same time the data collector collects teaching management data. The data analyzing device carries out statistic analysis on the teaching management data which are collected by the data collector, and obtains a teaching quality report. The classroom teaching auxiliary system can increase constraint force on classroom discipline, strengths supervision on teaching quality, arouses learning initiative of students, assists classroom teaching of teachers, solves the problems of style of study and style of teaching in traditional teaching, and continuously improves the teaching quality. The classroom teaching auxiliary system not only can objectively and reliably monitor quality characteristics of the classroom teaching, but also can analyze scientifically and accurately on the basis of monitoring and then provide a more reasonable teaching quality report and a rectification and reform program.
Owner:何å‡Æä½³ +1

System for detecting mass, mass center and mass offcenter of cylinder

The invention provides a system for detecting mass, mass center and mass offcenter of a cylinder, and belongs to the measurement technical field. The system for detecting the mass, the mass center and the mass offcenter of the cylinder comprises a main controller, a data acquisition module, a control interface module, a signal conditioning circuit, a motor driving circuit, a distance measuring device, a power module, a lifting motor, four weighting sensors and a lifting platform. The cylinder to be measured is clamped on a tray at one time, the lifting motor is started, the tray is landed on the weighting sensors, the distance measuring device is moved to measure a reference distance of the cylinder, and then data of the sensors are acquired twice in a front and back mode when the cylinder rotates by 90 degrees, and a detecting result of the mass, the mass center and the mass eccentricity of the cylinder can be acquired according to a four-point method. The system for detecting the mass, the mass center and the mass offcenter of the cylinder has the advantages of being compact in structure, large in measuring diameter range, high in measuring accuracy and automation degree, and capable of being used in delivery detection, factory acceptance inspection and quality characteristic detection of cylinder parts or products.
Owner:HARBIN JIANCHENG GRP

Component quality characteristic integration test equipment and test method

The invention provides equipment used for integrated measurement of quality characteristic of the parts; a torsion pendulum lower disc is fixed on a base; a torsion pendulum upper disc is connected with the torsion pendulum lower disc by a torsion spring component; the torsion pendulum lower disc and the torsion pendulum upper disc are fixedly connected with each other by a bolt; when the bolt is loosened, compressed air is injected in the air inlet hole of the torsion pendulum lower disc so as to form an air cushion between the torsion pendulum lower disc and the torsion pendulum upper disc; the torsion pendulum upper disc is arranged in an air-floating state and carries out torsion pendulum fro and back under the action of a torsion pendulum driving mechanism and the torsion spring component; a rotation inertia measurement instrument measures the rotation inertia of the article to be measured according to the torsion-pendulum period of the torsion pendulum upper disc; a supporting frame is fixed on the external circumference of the torsion pendulum upper disc; a mass center disc is fixed on the supporting frame by a conversion mechanism; the mass center disc is provided with the article to be measured; a weighing sensor component is arranged on the surface of the torsion pendulum upper disc; the relative position of the mass center disc and the supporting frame can be changed by the conversion mechanism; when the mass center disc is separated from the supporting frame, the weight of the mass center disc and the article to be measured is borne by the weighing sensor; and the mass and the mass center of the article to be measured is measured by a mass and mass center measurement instrument according to the value of the sensor component.
Owner:BEIJING SATELLITE MFG FACTORY

Embedded satellite configuration

InactiveCN106742063AReduce feature sizeReduce the inertia of the whole starCosmonautic power supply systemsArtificial satellitesSpace environmentSolar cell
The invention provides an embedded satellite configuration. The embedded satellite configuration comprises a platform cabin, a loading cabin, a docking locking-unlocking mechanism, a non-contact magnetic suspension direct force control mechanism and a solar cell array. The platform cabin is in a hollow annular structure; the loading cabin is arranged in the platform cabin; the docking locking-unlocking mechanism and the non-contact magnetic suspension direct force control mechanism are arranged between the platform cabin and the loading cabin respectively; the solar cell array is arranged on the side of the platform cabin. Ultrahigh-precision ultrahigh-stability control requirements of satellites are met, quality characteristics and agile mobility performances of the satellites are improved, a loading space environment is improved, and influences of platform disturbance and thermal cycling on satellite loading are reduced. According to a design conception of non-contact split design and centralized control, the embedded satellite configuration has advantages of structural configuration compactness, high control precision, high environmental adaptability, low development risk, short cycle and simplicity and feasibility in integration and final assembly.
Owner:SHANGHAI SATELLITE ENG INST

Method for on-line measurement of coal quality characteristics based on partial least squares method

The invention provides a method for on-line measurement of coal quality characteristics based on partial least squares method. Firstly, the coal calibration samples containing known components are detected by use of an laser-induced breakdown spectroscopy (LIBS) system, the calibration samples are classified by the principal component analysis (PCA) or partial least squares-discriminant analysis (PLS-DA) method according to the obtained spectral line intensity matrix, and PLS regression equations of the individual classes of the calibration samples are established respectively; and then a sample to be tested is detected on line to obtain an LIBS spectrum, the type of the sample to be tested is judged by the PCA or PLS-DA method, and the spectral line intensity matrix of the LIBS spectrum is put into the PLS regression equation of the corresponding type to calculate the mass concentrations of individual elements in the sample to be tested. The method fully utilizes the effective information of the LIBS spectrum, eliminates the multiple correlation of spectral line intensity caused by the mutual interference of the elements, reduces the influence of the matrix effect, and is characterized by high goodness of fit, strong reproducibility and high prediction accuracy in comparison with the single-variable calibration method in the prior art.
Owner:TSINGHUA UNIV

Combined thermal transmission type micro roller drying device of tobacco

The invention provides a tobacco combined heat transfer type small-sized roller drying device, which comprises a pre-heater connected with a gas source and a water source, a saturated humid air generator, a mixer, a roller device and a data acquisition device, wherein the pre-heater and the saturated humid air generator can send gases generated to the mixer by conveying pipes respectively, and the gases are mixed and sent to the roller device by a rotary connector to make the staying time controllable treatment on the cut tobacco in the roller; and the pre-heater, the saturated humid air generator, the mixer and the temperature of air flow sent to the roller device can be controlled by an intelligent temperature control instrument. The drying device has the essential characteristics that under the conditions of controlling the rotary speed and the temperature of the roller wall of the roller, the roller and an introduced dried gas medium jointly processes a certain amount of cut tobacco samples in the roller in the set drying time; simultaneously, during the processing, partial cut tobacco is taken out for analysis and evaluation on physical, chemical and aesthetic quality; furthermore, the analysis and the judgment on the processing quality property of the cut tobacco in the drying process are made.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC

Method and system for evaluating quality in process of manufacturing cigarette

The invention discloses a method and system for evaluating quality in the process of manufacturing batch cigarette products. The method and system are characterized in that on the basis of evaluating the process quality of certain procedure single quality characteristic value, process performance indexes of a multivariable procedure are calculated by a principal component analysis method to obtain the weights of all principal components according to the respective characteristics of the procedures of shredding, wrapping, molding and the like, and the process performance indexes of the procedure are acquired through arithmetic weighted average, so that the quality in the process of manufacturing the cigarette is evaluated. Compared with other evaluation methods, the evaluation method disclosed by the invention has the advantages that: the selection of evaluation indexes more conforms to actual production demands, and the actual application range is wider; the establishment of evaluation standards fully refers to the conventional research results and is more scientific and objective; the quality control conditions of all production procedures of the cigarette can be better known through the evaluation; and more adequate data support is provided for continuously improving the quality in the process of manufacturing the cigarette and the final quality.
Owner:CHINA TOBACCO HEBEI INDUSTRIAL CO LTD

Method for comprehensively evaluating quality of batch tobacco leaves

The invention discloses a method for comprehensively evaluating quality of batch tobacco leaves. The method comprises the steps of acquiring a preliminary flue-cured tobacco sample in a batch transferring process, measuring data of appearance, chemical and sensory quality evaluation data of the flue-cured tobacco, calculating the score of each quality evaluation index through constructing a conformity function model and dimensionless processing, and finally integrating a final score in flue-cured tobacco quality evaluation and grade number information in batch transferring for obtaining an evaluation result. The flue-cured tobacco quality evaluation indexes comprise the appearance quality index of the flue-cured tobacco, the routine chemical component index, and the sensory quality characteristic index. The appearance quality index of the flue-cured tobacco is the weighting mean value of single-grade different sample quality inspection data of an industrial enterprise in batch transferring. The routine chemical component index is the comprehensive value of single-grade chemical component conformity. The sensory quality characteristic index is the comprehensive score of the single-grade sensory quality characteristic, wherein the comprehensive score is calculated according to the YC / T 530-2015 flue-cured tobacco and tobacco leaf quality stylistic feature sensory evaluation method. The method realizes more comprehensive and effective analysis evaluation on the tobacco leaf in different transferring batches, thereby performing an industrial transferring guiding function in a contract requirement.
Owner:CHINA TOBACCO JIANGSU INDAL

Welding spot defect identifying method

The invention provides a welding spot defect identifying method which comprises a step of performing characteristic extraction on the acquired welding spot image information and a step of identifying the welding spot defect according to the ways of identifying, fuzzy inference, neutral network according to the characteristics and the like, and specifically comprises the following steps of: 1) obtaining a sample for training an artificial neural network according to the principle of an orthogonal test based on the welding spot shape theory; 2) training the artificial neural network by use of an improved neural network algorithm to obtain a network for predicting the possibility of various defects of the welding spots; and 3) performing image processing on the actual welding spot, extracting the shape quality characteristic as the input of the trained artificial neural network, and performing forward calculation by use of the trained network to realize identification of the welding spot defect. In the invention, as the BP neural network is improved and the genetic algorithm is introduced into the neural network algorithm training, the defects of slow convergence, easy trap in local optimal solution and the like of the neural network are solved, and the network performance is improved to some degree so as to realize defect identification of complicated welding spots.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Image quality classification method based on dual-channel deep parallel convolutional network

The invention discloses an image quality classification method based on a dual-channel deep parallel convolutional network. The image quality classification method solves the problems of difficulty inartificial construction of quality features and loss of image detailed information in convolutional neural network input normalization. The image quality classification method comprises the implementation steps of: selecting image samples; constructing a training image data set; establishing the dual-channel deep parallel convolutional network; preprocessing the training data set; training the dual-channel deep parallel convolutional network; performing data preprocessing on an image to be tested; and giving out an image quality classification result. The image quality classification method designs the new dual-channel deep parallel convolutional network, inputs a global image and local images via two channels separately, comprehensively considers the global information and detailed information of the images, designs a parallel convolution structure for the global image, can eliminate the influence of image semantic information on image quality classification, realizes comprehensive,reasonable and detailed image quality classification, and is widely used in computer vision and image aesthetic quality evaluation.
Owner:XIDIAN UNIV
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