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575 results about "Total resistance" patented technology

Court line loss rate prediction calculation method using K-means clustering algorithm

ActiveCN109272176ASolve the selection problem in initial clusteringAccurately Classify DataDigital data information retrievalForecastingElectrical resistance and conductanceOriginal data
The invention discloses a court line loss rate prediction calculation method using a K-means clustering algorithm, the method comprises the following steps: 1, selecting an active power supply quantity X1, a reactive power supply quantity X2, a total length X3 of a power supply line, a power supply radius X4 and a total resistance X5 of the line as electrical characteristic parameters; 2, standardizing the original data of the electrical characteristic parameters; 3, establishing a performance index function PI (i) of that stage area through electrical characteristic parameters, and selecte aninitial cluster center point and a cluster numb K; Step 4, using the improved K-means clustering algorithm to predict the court line loss rate. The invention utilizes the index function established by the electric characteristic parameters of the court as the principle of judging the initial clustering center by clustering analysis, and improves the accuracy of a clustering result. And the original clustering mode algorithm is changed, which not only provides reasonable sample data for the prediction calculation of the court line loss rate, but also makes the line loss rate prediction resultmore accurate, and improves the calculation speed.
Owner:GUIZHOU POWER GRID CO LTD

Compound functional sandwich glass containing metal nano-structured conductive layer

The invention discloses a compound functional sandwich glass containing a metal nanostructured conductive layer, and the sandwich glass provided by the invention relates to the field of auto sandwich glass, and comprises an inside glass substrate, an outside glass substrate, a transparent conductive film, a sandwich polymer and a metal nano-structured conductive layer. The sandwich glass is characterized in that the inside glass substrate and the outside glass substrate are two glass bent plates with curvature; the sandwich glass is composed of two pieces of glass and the sandwich polymer, the transparent conductive film is deposited on one side of one piece of glass facing the sandwich polymer, the metal nano-structured conductive layer is arranged on the transparent conductive film, and the transparent conductive film and the metal nano-structured conductive layer are combined closely and connected with a power supply by virtue of a bus. The compound functional sandwich glass disclosed by the invention has the advantages that the metal nano-structured conductive layer is arranged on the transparent conductive film, and the metal nano-structured conductive layer and the transparent conductive film are connected in parallel, thereby reducing the total resistance for heating the sandwich glass, and then achieving the purposes of concurrently meeting and ensuring that the visible light transmittance is higher than 70% and the sandwich glass is heated by using an auto standard 12V direct-current power supply.
Owner:FUYAO GLASS IND GROUP CO LTD

Cigarette segmental draw resistance measuring method

A cigarette segmental draw resistance measuring method comprises the steps of dividing a whole cigarette into six parts including a cut tobacco part wrapped by cigarette paper, a cigarette paper part, a cut tobacco part wrapped by tipping paper, a front part of a filter tip, a rear part of the filter tip and a filter tip ventilation hole part, and R1, R2, R3, R4, R5 and R6 are used for respectively representing the draw resistance of the segmental parts of the cigarette. Through measurement of open draw resistance, closed draw resistance, two types of semi-closed draw resistance, total ventilation rate, filter tip front segment length and filter tip rear segment length, the corresponding total resistance value of the cigarette is obtained, and meanwhile, by utilizing series-parallel connection relationships between the resistance values of the six segment parts of the cigarette as well as a relational expression between the draw resistance and the resistance values as well as airflow amount are used to calculate the draw resistance of each segment of the cigarette. The method provided by the invention has the advantages of simple operation and simple calculation, can realize accurate measurement on the draw resistance of each part of the cigarette under the condition of different types of filter tip ventilation technologies, and provides basic support for cigarette product quality tracing, product design and process optimization.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC +1

Method for detecting quality of conductive sliding ring

The invention provides a method for detecting the quality of a conductive sliding ring, relating to a method for detecting the conductive sliding ring, and solving the problem that the conventional method for detecting the conductive sliding ring cannot represent the change of the total dynamic resistance of the conductive sliding ring and the contact resistance between an electric brush and a sliding way. The method comprises the following specific steps of: placing a conductive sliding ring to be detected on a conductive sliding ring test tool to enable the conductive sliding ring to be operated at a constant rotation speed omega; and measuring a dynamic resistance y(t); according to the total resistance of the conductive ring, obtaining a total resistance R of a circle of the conductive ring to be detected, and calculating to obtain a resistance equivalent direct-current component R0 of the conductive sliding ring by comparing the ideal dynamic resistance with the actually measured dynamic resistance y(t) and the parameter R; solving to obtain a residual effective value rho of the conductive sliding ring to be detected according to the parameters R and R0, wherein the rho represents the quality of a process for manufacturing the electric brush of the conductive sliding ring and the conductive sliding ring; and calculating to obtain a mean value and a maximum fluctuation delta Rmax according to the y(t), and obtaining a fluctuation peak value Rpp according to the parameter R, wherein the material used by the conductive ring and the conductivity are reflected by the mean value, the maximum fluctuation delta Rmax and the fluctuation peak value Rpp. The method for detecting the quality of the conductive sliding ring provided by the invention is applicable to the quality detection of the conductive sliding ring.
Owner:HARBIN INST OF TECH

Preparation method of water retention type proton exchange membrane for fuel cell

The invention discloses a preparation method of a water retention type proton exchange membrane for a fuel cell, including spraying a perfluorinated sulfonic acid resin solution on the surface of an expanded polytetrafluoroethylene micropore film; the method comprises the following steps: filling a perfluorinated sulfonic acid resin component and a silicon dioxide component into micropores of theexpanded polytetrafluoroethylene micropore film in an impregnating way; and controlling the exchanging thickness of a compound proton in a way of spraying the perfluorinated sulfonic acid resin component and the silicon dioxide component. The compound proton exchange membrane prepared by the method not only ensures the absorption capability of water but also reduces the total resistance of the compound proton exchange membrane because water retention components of silicon dioxide is distributed in a gradient way, has a water retention function, reduces the dependency of the proton exchange membrane fuel cell on a humidification system, can ensure the compound proton exchange membrane to normally work under a low-humidification environment, is easy to realize the large-scale production andhas uniform thickness, high humidity strength and good size stability.
Owner:SUNRISE POWER CO LTD
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