Discussion of EV Virtual Value Calculation Method for Light Environment Test System and Influence Factors of Calibration Experiment under Skylight

2012 ◽  
pp. 179-185
Author(s):  
Yuan Zou ◽  
Tianxing Shen
Keyword(s):  
Calculation Method ◽  
Influence Factors ◽  
Test System ◽  
Light Environment ◽  
Calibration Experiment

Einflussfaktoren in Routenzugsystemen*/Factors influencing internal milkrun systems - A method for calculating the intensity of influence of dimensioning parameters

2015 ◽  
Vol 105 (01-02) ◽  
pp. 65-71
Author(s):  
A. Martini ◽  
A. Rohe ◽  
U. Stache ◽  
F. Trenker
Keyword(s):  
Calculation Method ◽  
Influence Factors ◽  
Factors Influencing ◽  
Rank System ◽  
Factors Of Influence ◽  
Design Options ◽  
Specific Influence

Die Komplexität bei der Planung und Optimierung von Routenzugsystemen ist auf die Vielzahl der unterschiedlichen Gestaltungsmöglichkeiten und auf Interdependenzen zwischen den Einflussfaktoren zurückzuführen. Die im Fachartikel vorgestellte Verfahrensweise zur Einflussstärkenberechnung verschiedener Dimensionierungsparameter dient der Rangfolgebildung systemspezifischer Einflussfaktoren. Durch quantitativ-explorative Untersuchungen werden zudem Hypothesen für weitere Arbeiten gewonnen.   The complexity of planning and optimizing internal milkrun systems is a consequence of the multitude of different design options and interdependencies between the factors of influence. The calculation method for measuring the influence of different dimensioning parameters presented in this article serves to rank system-specific influence factors. Hypotheses for further research are obtained via quantitative-exploratory studies.

Evaluation Index LPD of Highway Lighting’s Energy-Saving

2012 ◽  
Vol 178-181 ◽  
pp. 1628-1630
Author(s):  
Wei Li ◽  
Chuan Zheng Zhu ◽  
Yong Yang
Keyword(s):  
Energy Saving ◽  
Power Density ◽  
Traffic Safety ◽  
Calculation Method ◽  
Influence Factors ◽  
Road Surface ◽  
Evaluation Index ◽  
Lighting System ◽  
Road Lighting ◽  
Standard Value

LPD’s (lighting power density) definition, calculation method, standard value, influence factors and ways to reduce it are talked in this article. The aim is to take measures to reduce LPD properly. LPD should be less than standard value while guaranteeing traffic safety, average and uniformity road surface luminance. Then a road lighting system of energy-saving should be built as soon as possible.

Research of Spindle Runout Testing Methods

2011 ◽  
Vol 121-126 ◽  
pp. 1455-1459 ◽  
Author(s):  
Yi Gao ◽  
Guo Hua Cao ◽  
Hong Ji Xu ◽  
Zheng Lin Yu
Keyword(s):  
Measurement System ◽  
Test System ◽  
Test Methods ◽  
Displacement Sensor ◽  
Sensor Calibration ◽  
Laser Displacement Sensor ◽  
Testing Methods ◽  
Calibration Experiment ◽  
Calibration Device ◽  
Machine Spindle

The paper aims at the analysis of machine spindle runout characteristics and designs of a laser displacement sensor in non-contact spindle runout measurement system. To ensure accuracy, we designed the laser displacement sensor calibration device, and the test calibration experiment was carried out by using laser displacement sensor. Experimental results showed that the test methods met the accuracy requirements of test system.

Calculation Method of Spatial Value Added for Commodity to Transport

2013 ◽  
Vol 671-674 ◽  
pp. 2881-2884
Author(s):  
Xiao Dan Ma ◽  
Li Yan Cao ◽  
Xiao Mei Xia
Keyword(s):  
Calculation Method ◽  
Optimal Allocation ◽  
Influence Factors ◽  
Commodity Prices ◽  
Value Added ◽  
Added Value ◽  
Spatial Function ◽  
Commodity Space ◽  
Space Layout ◽  
The Relationship

To make commodity play its spatial function and achieve the optimal allocation of resources effectively, it analyzes the influence factors of co spatial value added for commodity to transport. It begins with the relationship between different region's disposable income, economic level and commodity prices to search for computation spatial value added for commodity to transport. Then it analyzes calculation method of spatial value added for commodity to transport and establishing the space added value-price model to reflect commodity space added value. Last it raises commodity space value-added effective method. It gives full use of goods value and promotes commodity reasonable space layout.

Study on Calculation Method of Stresses under Embankment

2011 ◽  
Vol 90-93 ◽  
pp. 656-661
Author(s):  
Hong Bin Xiao ◽  
Yue Wang
Keyword(s):  
Calculation Method ◽  
High Speed ◽  
Influence Factors ◽  
Engineering Practice ◽  
Correction Coefficient ◽  
Calculation Methods ◽  
Uniform Load ◽  
High Speed Railway ◽  
Railway Engineering ◽  
The Relationship

In China high-speed railway engineering practice, embankment settlements calculated values were often greatly different to the measured values, which may result from the stresses distribution under the embankment usually simplified. According to this issue, the elastic embankment method was introduced, the stresses under various embankment were calculated, the influence factors of the stresses values and distribution were analyzed. The stresses calculated by elastic embankment method, proportional load form and uniform load form were compared with the measured stresses. The relationship among the four kinds of stresses was analyzed. The applicable conditions of the various calculation methods were put forward. If the ratio of embankment half surface width and height was less than 4.5, when the stresses calculated by uniform load form were multiplied by correction coefficient 1.15, they were tallied well with the measured stresses.

scholarly journals Influencing Factors of Rock Electrical Signal Analysis Based on Artificial Intelligence

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Fei He ◽  
Jiabei Shen ◽  
Zhi Tang ◽  
Xiaomeiao Qi ◽  
Haoran Li
Keyword(s):  
Rock Mass ◽  
Influence Factors ◽  
Functional Relation ◽  
Test System ◽  
Electrical Signal ◽  
Generation Mechanism ◽  
Electric Signal ◽  
Energy Relation ◽  
Electrical Signals ◽  
Coal Rock

To get the generation mechanism and influence factors of the coal-rock electrical signal, it provides a reference for coal-rock electric signal prediction and dynamic disaster. Firstly, the law of charge energy relation is deduced by using the universal or functional relation of Newton’s law, and then coal and rock mass with different properties such as coal, granite, and sandstone are selected. Using the established test system, the influence of coal and rock electric signal is analyzed from the coal-rock temperature, coal and rock properties, coal-rock friction, coal-rock loading speed, and coal-rock load size. The chief results can be summarized as follows: in the process of coal-rock rising with temperature, the change rule of electrical signals can be divided into three stages according to the strength of electrical signals generated. The amplitudes of electrical signals generated by uniaxial compression of coal-rock mass with different properties are obviously different. Electrical signals can be generated during the friction of coal and rock. With the augment of loading speed, the electrical semaphore generated when the coal rock is about to fracture tends to be enhanced. The size of the electrical signal is not proportional to the size of the load, but the electrical signal is greatest when the rupture is imminent. The analysis of the influence factors of coal and rock electrical signals can provide a reference for the research on the generation mechanism of coal-rock electrical signals.

scholarly journals Influence of rotational speed and torque on meshing efficiency of double helical gear transmission system

2021 ◽  
Vol 22 ◽  
pp. 23
Author(s):  
Cheng Wang
Keyword(s):  
Calculation Method ◽  
Rotational Speed ◽  
Power Flow ◽  
Theoretical Foundation ◽  
Influence Factors ◽  
Transmission Efficiency ◽  
Theory Model ◽  
Helical Gears ◽  
Gear Transmission System ◽  
Bearing Loss

The accuracy of gear meshing efficiency model is the key to study the influence factors of gear meshing efficiency. Experiment is an effective method to verify the theory model. Therefore, the acquisition of experimental value of gear meshing efficiency is particularly important. Taken double helical gears as the research object, on the analysis of a large number of experimental data, the experimental value of gear meshing efficiency for double helical gears are calculated and then the influence of rotational speed and torque on meshing efficiency of double helical gears is studied. Firstly, the calculation method of transmission efficiency for experimental value in different layout of gear test-rigs with closed power flow is summarized. Secondly, the calculation method of meshing efficiency for experimental value in gear test-rig with closed power flow is introduced. Thirdly, the calculation method of load-dependent bearing loss is given. Finally, the experimental value of meshing efficiency for double helical gears is calculated and the influence of rotational speed and torque on meshing efficiency of double helical gears is obtained, which lays a theoretical foundation for the further improvement of the transmission efficiency of double helical gears.

The Calculation Method of Basic Reserve Fund in Power Grid Construction Project: A Case Study from China

2014 ◽  
Vol 584-586 ◽  
pp. 2659-2663
Author(s):  
Xue Liang Hou ◽  
Ying Rong Yang ◽  
Yue Li
Keyword(s):  
Calculation Method ◽  
Power Grid ◽  
Construction Project ◽  
Influence Factors ◽  
Measuring Method ◽  
Calculation Model ◽  
Distribution Fitting ◽  
Fixed Rate ◽  
Grid Construction ◽  
Reserve Fund

This paper studied the calculation method of basic reserve fund (BRF) based on distribution fitting and Monte Carlo Simulation (MCS) in power grid construction project (PGCP). BRF copes with the various unforeseen expenses in the process of budget compilation. Nowadays, the measuring method with fixed rate cannot adapt to the request, because of the BRF with larger uncertainty influence factors. MCS technique can achieve a good simulation to solve the problem of uncertainty. The research first uses MINITAB to analysis the distribution of various influence factors, then uses MATLAB to build calculation model to take the stochastic simulation for many times, finally gets a more realistic BRF. A case from China is used to confirm this calculation method works well.

Contact Strength of Toroidal Drive with Cylindrical Teeth

2013 ◽  
Vol 288 ◽  
pp. 92-97 ◽  
Author(s):  
Shi Ping Yang ◽  
Yuan Qiang Tan ◽  
Ya Lan Pan ◽  
Li Min Li ◽  
Jin Gang Liu
Keyword(s):  
Contact Stress ◽  
Calculation Method ◽  
Influence Factors ◽  
Major Influence ◽  
Contact Strength ◽  
Meshing Equation ◽  
Tooth Number ◽  
Internal Gear ◽  
Center Distance

The meshing equation of the toroidal drive with cylindrical tooth was established based on space meshing theory, and the formula of contact stress between planet and worm or the toroidal internal gear are derived. Major influence factors were analyzed and forecasted. The contact stress is sensitive to the tooth number of planet center distance and planet radius. Finally, the calculation method of contact strength of toroidal drive was given.

Calculation of Radial Active Magnetic Bearing Electromagnetic Force under Eccentric Rotor

2012 ◽  
Vol 443-444 ◽  
pp. 649-654
Author(s):  
Xiao Jing Liu ◽  
Ye Fa Hu
Keyword(s):  
Calculation Method ◽  
Electromagnetic Force ◽  
Influence Factors ◽  
Magnetic Bearing ◽  
Air Gap ◽  
Active Magnetic Bearing ◽  
Integrative Approach ◽  
Eccentric Rotor

As for active magnetic bearing, ordinary electromagnetic force formula based on air gap well-distributed. However, radial active magnetic bearing always face the situation that the rotor is eccentric and the air gap doesn’t well-distributed. This paper gives the calculation method of the electromagnetic force at that situation through calculating the air gap and using integrative approach. Then analysis the influence factors---eccentric rotor distance from center and eccentric angle to electromagnetic force. The result can provide the basis for suspension characteristic of active magnetic bearing.

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