Mutual Capacitance Element

2013 ◽  
Vol 448-453 ◽  
pp. 2105-2108
Author(s):  
Wei Zong ◽  
Yu Shan Zhang
Keyword(s):  
Electromagnetic Interference ◽  
Mutual Inductance ◽  
Simulation Software ◽  
Duality Principle ◽  
Coupling Element ◽  
Implementation Model ◽  
Mutual Capacitance ◽  
Set Up ◽  
Electrical Components ◽  
Theory Calculation

In order to realize the integration of electronic circuits and avoid the electromagnetic interference between mutual inductance components and periphery circuit, the paper put forward a new kind of coupling element-mutual capacitance components, which were dual with mutual inductance components, according to the duality principle and the gyrator application theory. First of all, the paper used the basic electrical components-operational amplifier, resistance and capacitor to set up the circuit implementation model of mutual capacitance component, and then selected device parameters to execute theory calculation. On the basis of the previous step, a simulation software-PSpice, was used to simulate the model. Finally, comparison of two different groups of simulation data showed the correctness of the circuit model and the feasibility of the mutual capacitance component.

Design of Control System for Hydraulically Vibrated Processing Tomato Fruit Seedling Separation Device

2014 ◽  
Vol 651-653 ◽  
pp. 693-696
Author(s):  
Li Hong Wang ◽  
Rong Qing Liang ◽  
Cheng Song Li ◽  
Za Kan ◽  
Jin Wei Qin
Keyword(s):  
Tomato Fruit ◽  
Simulation Software ◽  
Signal Frequency ◽  
System Control ◽  
Frequency Range ◽  
Hydraulic Simulation ◽  
Separation Device ◽  
Processing Tomato ◽  
Input Signal Frequency ◽  
Set Up

Eccentric style processing tomato fruit seeding separation device exist high machining and assembly precision or other issues. In order to solve this problem, the mode of vibration of hydraulic replaced the eccentric style to drive the fruit seedling separation roller to separate processing tomato effectively. To facilitate adjustment of the hydraulic system, a kind of control circuit PLC as the core was designed according to the actual production requirements. PLC and other elements were selected. The system control signal frequency was initially set up as 1~5 HZ, within the frequency range hydraulic simulation software was used to simulate and analyze the hydraulic vibration system. The result shows that the system rams steady when the input signal frequency range was 1~5HZ.

Restructuring Applied Thermodynamics: Exploratory Thermodynamics

1994 ◽  
Author(s):  
John S. Morse
Keyword(s):  
Thermodynamic Analysis ◽  
Graphical Method ◽  
Property Values ◽  
Simulation Software ◽  
Second Law ◽  
Conservation Equations ◽  
Solution Methods ◽  
Design Type ◽  
Set Up

Abstract A graphical method is proposed for removing the “drudge work” of looking up property values and solving the conservation equations and second law in an Applied Thermodynamics course. The vehicle used is VisSim simulation software. The method requires the student to perform the thermodynamic analysis and set up the equations, but the computer finds the property values and solves the equations. This concept allows the student to explore various aspects of the topics covered in such a course, including power and refrigeration cycles, mixtures and psychrometrics, and combustion and equilibrium. Substantial design type problems can be solved easily, as can complicated analyses that are too difficult and time consuming for traditional solution methods.

Research Development in Void Formation Mechanism and Elimination Method during RTM Process

2010 ◽  
Vol 168-170 ◽  
pp. 2315-2320
Author(s):  
Mei Yang ◽  
Qing Shen Zeng ◽  
Hong Yu Wang ◽  
Wei Xing Zhang
Keyword(s):  
Numerical Simulation ◽  
Low Cost ◽  
Void Formation ◽  
Injection Pressure ◽  
Simulation Software ◽  
Fibre Reinforcement ◽  
Rtm Process ◽  
Numerical Simulation Methods ◽  
Set Up ◽  
Real Flow

Resin transfer molding (RTM) is a very important category of low cost fibre reinforcement composite material manufacturing technique. But void which mainly formed at the process of filling and infiltration is able to reduce the performance of products. This paper first introduced how harmful the void is, and then formation theory, finally focus on the technical feature and resent evolution. Numerical simulation is always a mature and efficient research method for this field of investigation. Formerly, scientists also attribute their effort to such investigation, but, at that time, their simulation was 1D or 2D which can not represent the process accurately enough. Therefore the results are not so significant. Recently most studies pay attention to 3D simulation and how factors (such as injection pressure, structure of preform and so on) work. With the development of mathematic theory and simulation software some new numerical simulation methods present itself. Researchers may copy the course of resin’s filling in RTM more integrity to make their relation close to reality. Based on their achievement, the technique of RTM also improved to eliminate void’s emergence. However the real flow of resin is more than complex, more work should be done to avoid it and then set up a controllable industrial production system.

scholarly journals Fast high-energy X-ray imaging for Severe Accidents experiments on the future PLINIUS-2 platform

2018 ◽  
Vol 170 ◽  
pp. 08003
Author(s):  
L. Berge ◽  
N. Estre ◽  
D. Tisseur ◽  
E. Payan ◽  
D. Eck ◽  
...  
Keyword(s):  
Large Scale ◽  
Spot Size ◽  
High Energy ◽  
Simulation Software ◽  
Small Scale ◽  
Noise Sources ◽  
X Ray ◽  
X Ray Imaging ◽  
The Future ◽  
Set Up

The future PLINIUS-2 platform of CEA Cadarache will be dedicated to the study of corium interactions in severe nuclear accidents, and will host innovative large-scale experiments. The Nuclear Measurement Laboratory of CEA Cadarache is in charge of real-time high-energy X-ray imaging set-ups, for the study of the corium-water and corium-sodium interaction, and of the corium stratification process. Imaging such large and high-density objects requires a 15 MeV linear electron accelerator coupled to a tungsten target creating a high-energy Bremsstrahlung X-ray flux, with corresponding dose rate about 100 Gy/min at 1 m. The signal is detected by phosphor screens coupled to high-framerate scientific CMOS cameras. The imaging set-up is established using an experimentally-validated home-made simulation software (MODHERATO). The code computes quantitative radiographic signals from the description of the source, object geometry and composition, detector, and geometrical configuration (magnification factor, etc.). It accounts for several noise sources (photonic and electronic noises, swank and readout noise), and for image blur due to the source spot-size and to the detector unsharpness. In a view to PLINIUS-2, the simulation has been improved to account for the scattered flux, which is expected to be significant. The paper presents the scattered flux calculation using the MCNP transport code, and its integration into the MODHERATO simulation. Then the validation of the improved simulation is presented, through confrontation to real measurement images taken on a small-scale equivalent set-up on the PLINIUS platform. Excellent agreement is achieved. This improved simulation is therefore being used to design the PLINIUS-2 imaging set-ups (source, detectors, cameras, etc.).

scholarly journals On the determination of the absolute unit of resistance by alternating current methods

1912 ◽  
Vol 87 (597) ◽  
pp. 391-414 ◽  
Keyword(s):  
Lower Order ◽  
Alternating Current ◽  
National Physical Laboratory ◽  
Mutual Inductance ◽  
Electrical Circuits ◽  
Physical Laboratory ◽  
Absolute Measure ◽  
The Absolute ◽  
Set Up

1. Introductory .—Recently at the National Physical Laboratory we have constructed a standard of mutual inductance of novel type, whose value has been accurately calculated from the dimensions. This inductance has formed the basis for the determination of the unit of resistance in absolute measure by two different methods, in both of which alternating current is employed. Although there is no doubt that the accuracy attainable by these methods could be increased by greater elaboration of the apparatus used, the results already obtained seem to be of sufficient interest to warrant publication. It should be mentioned that the accuracy here aimed at was of a considerably lower order than that contemplated in the determination of the ohm by the Lorenz apparatus which is at present being carried out in the laboratory. For the experiments here described, no apparatus was specially constructed, but use was made of instruments which had already been designed and set up for the measurement of inductance and capacity. I shall first give a brief description of the standard inductance and then pass on to the methods and results. 2. Standard Mutual Inductance .—The design of the mutual inductance has already been described. The electrical circuits have the form and arrange­ment shown in section in fig. 1.

A Smooth Flow of Traffic Circle Model

2011 ◽  
Vol 50-51 ◽  
pp. 54-58
Author(s):  
Nan Ji ◽  
Jie Zhang ◽  
Yan Gao
Keyword(s):  
Delay Time ◽  
Green Light ◽  
Mathematic Model ◽  
Simulation Software ◽  
Signal Control ◽  
Average Delay ◽  
Smooth Flow ◽  
Set Up ◽  
Control Traffic ◽  
Circle Model

This article sets up mathematic model for the traffic circle to determine how best to control traffic flow. In order to make the traffic at the circle intersection smooth in maximum, this model figures out the largest traffic capacity through Wardrop’s formula. When the signal control is needed, a linkage time solving model is set up, which proves the number of seconds of every green light and work out the delay time. At last, the simulation software VISSIM is used for an example to work out the average delay time under the signal control. The result matches with this model.

Research in Wellbore Display Platform Based on Virtual Reality

2013 ◽  
Vol 347-350 ◽  
pp. 2910-2914
Author(s):  
Hui Li ◽  
Jun Hui Pan
Keyword(s):  
Virtual Reality ◽  
Production Equipment ◽  
Simulation Software ◽  
Mining Equipment ◽  
Production Engineering ◽  
Revolutionary Change ◽  
Set Up ◽  
2D Drawing ◽  
And Control ◽  
Oil Gas

Virtual reality technology is applied to production engineering, it provides a revolutionary change to the oil industry. This paper we first analyze the function of simulation platform, then set up basic framework of the system, use 3dsmax and simulation software to simulate wellbore, oil-gas-water mining equipment. Virtual environment in well site is constructed, it simulates the underground work process, and it can dynamically assemble the wellbore by the 2d drawing tools. This platform lets users realize functions that is from design to production engineering simulation process, users can fully master the oil production equipment and control the latest information of the oil wells.

Design of Magnetic Fluid Sealing Device and Computer Simulation in Sintering Machine

2011 ◽  
Vol 328-330 ◽  
pp. 2270-2273
Author(s):  
Ming Hua Bai ◽  
Qing Rong Liu ◽  
Hong Liang Zhou
Keyword(s):  
Magnetic Fluid ◽  
Magnetic Coupling ◽  
Simulation Software ◽  
Sintering Machine ◽  
Element Simulation ◽  
Sealing Performance ◽  
New Type ◽  
Set Up ◽  
Edge Temperature ◽  
Sealing Device

This paper, based on magnetic fluid dynamics, combined with the air leakage of sintering machine, proposes a new type of magnetic fluid sealing device in sintering machine. According to the sealing mechanism of MHD as well as Bernoulli equation, the sealing theory--pressure difference equation in static sealing by magnetic fluid is deduced for the actual model of sintering machine. By using ansys finite element simulation software, the two-dimensional numerical simulation of thermal magnetic- coupling inside of sealing device is set up, the effects of different temperature on the magnetic properties are analyzed and the best sealing performance is found, that is when the edge temperature of the sealing device is controlled from 30°C to 80°C.

The Research on Establishing Method of the Broadband Nonlinear Transformer Model

2014 ◽  
Vol 986-987 ◽  
pp. 2031-2034
Author(s):  
Zhong Yuan Zhang ◽  
Zeng Chao Wang ◽  
Xin Zhang
Keyword(s):  
Power Transformer ◽  
Simulation Software ◽  
Transient Simulation ◽  
Iron Core ◽  
Equivalent Transformation ◽  
Measurement Results ◽  
Set Up ◽  
Transformer Model ◽  
Broadband Frequency ◽  
Linear Block

The transformer model is one of the most needed to improving components of the modern transient simulation software. A new nonlinear broadband frequency (50Hz-10MHz) model of power transformer is proposed in this paper. The model is divided into a linear block and a nonlinear block by a reasonable equivalent transformation. The linear block is set up through measuring and synthesizing. And the nonlinear block is derived by the impendence of iron core. The final circuit model is built in Simulink, and the comparisons between the simulation and measurement results verify the feasibility and validity of the model.

A Variational Method of Robust Fixture Configuration Design for 3-D Workpieces

1997 ◽  
Vol 119 (4A) ◽  
pp. 593-602 ◽  
Author(s):  
Wayne Cai ◽  
S. Jack Hu ◽  
J. X. Yuan
Keyword(s):  
Variational Method ◽  
Simulation Software ◽  
Configuration Design ◽  
Fixture Design ◽  
Programming Technique ◽  
Workpiece Surface ◽  
Surface Errors ◽  
Set Up ◽  
Fixture Configuration ◽  
Source Errors

Fixtures are used to locate and hold workpieces during manufacturing. Because workpiece surface errors and fixture set-up errors (called source errors) always exist, the fixtured workpiece will consequently have position and/or orientation errors (called resultant errors). In this paper, we develop a variational method for robust fixture configuration design to minimize workpiece resultant errors due to source errors. We utilize both first-order and second-order workpiece geometry information to deal with two types of source errors, i.e., infinitesimal errors and small errors. Using the proposed variational approach, other fundamental fixture design issues, such as deterministic locating and total fixturing, can be regarded as integral parts of the robust design. Closed-form analytical solutions are derived and numerical examples are shown. By employing the nonlinear programming technique, simulation software called RFixDesign is developed. This paper presents a new procedure for robust fixture configuration design that contributes especially to fixture designs where deformation is not influential.

Sign in / Sign up

Export Citation Format

Share Document