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The aim of the article is to comprehensively test and explore the running performance of a new type of radiant air conditioning combined with fresh air system by simulating the climate that summer is hot and winter is warm, which is developed by the laboratory research group. The test results show that,...

With the rapid development of wind power technology, the size and number of grid-connected wind farms increase rapidly. Equivalent modeling of wind farms is the basis of the research on grid operating characteristics after wind power is connected to the grid. Long-distance transmission of large-scale...

In the process of electrolysis of rare earth metals, there are many factors that affect the final electrolytic production. These process parameters are usually determined by the workers in the factory according to their own experience, there is no statistical analysis of the scientific data to the final...

The fifth generation(5G) mobile broadband system will be able to achieve to increase the rate of flow up to 1000 times, enhance the number of connected devices about 100 times and the peak rate of 10 GBPS,guarantee the user experience rate about 10-100 Mbps,smaller time delay and higher reliability,and...

The application of Building Information Modeling (BIM) technology in managing the electric power construction project has not only become possible due to popularization of the technology, but also become necessary as the electric power project's size and complexity increases. In this paper, an electric...

In order to meet the requirements which a variety of DC power supply of a certain test equipment, a voltage stabilizing module which can provide a variety of DC voltage is designed. The voltage stabilizing module comprises a power supply switch, a DC/DC switch power supply, a DC/DC isolation module,...

A new method based on machine vision is designed for electric vehicle charging hole detection and location in order to solve the low efficiency, space limitations or leakage risk in artificial charging operation for electric vehicle and to realize the automatic charging based on robot. The method enable...

The Chinese government has put forward specific demands for the development of natural gas distributed energy, but there are still a number of constraints in the development process. This paper describes the technical principles of natural gas CCHP systems, analyzes its positive role, and demonstrates...

In order to reduce the impact of the decrease of inductor current during the freewheel switch on the pulse of next cycle, this paper puts forward a novel control scheme of pulse train (PT) according to the working character of the pseudo continuous conduction mode (PCCM) Buck-Boost converter. The novel...

In recent years China's wind power industry has developed rapidly. Yaw system is an important part of the wind power generation system. Its effectiveness not only affects the wind energy capture efficiency of the system, but also related to the safe operation of the wind power system. In this article,...

Vibration, especially at the circumstances of accidental falling down, always cause great damage to vehicle-mounted optics image stabilization system. Therefore, during the process of designing vehicle-mounted optics image stabilization system we need to consider how to reduce the harmful influence of...

Independent photovoltaic system needs energy storage in order to balance the power and improve its instability of power generation. A scientific control strategy can combine the PV cells to the battery system organically. The lithium-ion battery can be the bridge to achieve this target. This paper presents...

In the paper a two-stage management scheme is proposed. At the first stage, the yardstick competition is applied to optimize the electricity energy rationing model to realize maximum energy consumption efficiency. At the second stage, the objective of load control is to achieve the maximum of energy...

Integrated with the characteristics of comprehensive assessment, comprehensive evaluation index system of power demand side management (PDSM) is established. A quantitative evaluation model of PDSM implementation is proposed. In the model, index weight is calculated through principal components analysis...

To keep the water temperature even throughout the bathtub and as close as possible to the initial temperature without wasting too much water, we establish a mathematical model of the temperature of the bathtub water in space and time to determine the best strategy the bather can adopt when bathing. On...

Circulating water in thermal power plant as a unit of the cooling medium, takes a lot of heat and released into the environment, not only causes environmental pollution but also makes that the resource utilization rate of thermal power plant is not high. Through the water source heat pump technology,...

This paper discuss the smoke sensor and the relay control in the smart home.STM32 is used as the central part of the whole system and LwIP protocol is also applied to transfer data. The system uses the MQ-2 smoke sensor detect the concentration of combustible gases in air, and uses the SRD-05VDC-SL-C...

The imbalance of serially connected battery cells can easily lead to overcharge and over discharge, which can not only shorten the life of the battery pack but also reduce the energy efficiency. In this paper, aimed at the merit and demerit of existing measures, a new balancing method based on grouping...

The paper suggests a tension control method based on angular speed trajectory planning to improve tracking angular speed of fiber supply axis and precision of controlling optical fibre tension during the course of starting and stopping of optical fibre winding. First, kinematic trajectory of fibre extraction...

Based on the microstrip patch antenna radiation square chamfer, thereby introducing perturbation, single-fed microstrip antenna in circular polarization. High-frequency structure simulator HFSS antenna work at 2.45GHz of antenna design and simulation, the antenna has a circular polarization characteristics,...

There are dozens of anodes work in aluminum electrolysis at the same time. Because of the particularity of anode work and the waving ability of the melt, different current flow through different anode. Spectral characteristics of the current signal are important parameters of internal status changes...

In order to improve the automation degree of robot, design size of the robot is reduced, a new industrial robot has been designed using PLC, servo motor drive and servo motor as the core component, through the PLC programming and the Modbus communication. IPC and Delta PLC of this kind of robot uses...

With the social economic development, the construction of urban rail transit project in time, more and more attention at home and abroad industry total FBI urban rail transit engineering systems. Urban rail system construction process is the most important mechanical and electrical systems, from systems...

With the continuous development of information technology, the level of development of automobile industry for a country is largely based on the level of automotive electronic technology. To implement modern electronic technology and computer technology in the automotive industry has been rapidly applied;...

Solar energy is a new pollution-free energy of maturetechnology andabundantreserves. This paper firstly introduces the concept and characteristics of the solar power, and then analyzes the necessity and feasibility of its applications in rural areas. Finally, this paper gives three examples of the applications...

SHEPWM, a method to eliminate the selected low order harmonics by optimizing switching time sequence, has been concerned greatly because of its advantages such as high waveform quality, high efficiency, full utilization of DC side voltage and small size of DC side filter. In this paper, amathematic model...

In order to research the performance impact of the mobile communication system from DTX setting, we test the partial section in Jiujiang city of Jiangxi province. The research shows if we import DTX technology in the mobile communication network system, it is obviously can improve the voice MOS value...

The lead acid batteries used by electric vehicles have always presented the problem of low efficiency and high loss. In order to promote the popularization and application of electric vehicles, many researchers have put forward the fast charging method of battery. Based on this understanding, the fast...

Avionics system presents a comprehensive, modular, network and other trends, with a high degree of resource sharing, data integration and software, highly intensive and so on. Integrated avionics system to ensure a high degree of information sharing, enhance the efficiency of aircraft task execution...

Power system,which has large-scale and complex structure,plays a significant role in national economy development.However, the system components will occur various malfunction or be an abnormal operation state due to various man-made and natural factors.This paper aims to ensure the power grid's safe...

Currently, it is difficult to detect the overheat faults of high-voltage disconnecting switch and send out early warning signals effectively and immediately. Hence, an early-warning model was built by using radical basis function (RBF) neural network. The model takes three factors into consideration,...

The problem of electric power harmonic brought by nonlinear load in power grid has become more and more serious. The paper analyzes the main source and the causes of harmonics. The harm brought by electric power harmonic in electric equipment itself and power grid users are also be discussed. The paper...

This paper mainly introduces the working principle of double 12 pulse inverter. By analyzing the operation process of the inverter, obtaining the expression of voltage and current in both DC side and AC side respectively, and getting the relevant calculation formula of angle. Connecting two a 6 pulse...

In recent years, the relevant standard release also makes high temperature insulation material used in the mobile substation main transformer to the systematization and standardization. Meanwhile, the mobile substation is also gradually to greater capacity and higher voltage level terms. Understanding...

Wind power technology is currently the world's fastest growing and has the most economic benefits of all kinds of renewable energy generation technologies, but the randomness and intermittent of the wind speed and will directly affect the wind farm output. In this paper, the impact of new energy wind...

This paper presents the novel research on the low power and low voltage CMOS integrated circuit design patterns and general methodologies. With the integrated circuit technology to the rapid development of the deep sub-micron and nanometer order of magnitude, how to reduce the power consumption of the...

By means of electromagnetic transient simulation program, a detailed model of High Voltage Direct Current (HVDC) power transmission system actually operated in current power grid is built, and detailed variation of electric quantities, the duration of commutation failure and its impacts on AC power transmission...

Memristor is the fourth fundamental circuit element predicted by Leon O. Chua theoretically in 1971 and realized by HP scientists in 2008. In this work, we investigate the characteristics of canonical Chua's circuit and Chua's circuit based on memristor. More importantly, the response characteristics...

The analysis of UEFI firmware storage system is rare in available papers about UEFI.We introduce the Logical and physical structure of UEFI firmware. Then we analyse the elements -- firmware volume, firmware file, firmware segment -- that composed the UEFI firmware and give related code define and pay...

The theory of sustainable development is now widely used in various fields. This paper will quantify the water resources based on sustainable development. We use the ecological footprint model to carry on the analysis and select Shandong Province as the research object.

Harmonics in power system bring many adverse effects to the distribution system. Based on the analysis of the reason of harmonic generation, this paper puts forward the calculation method of harmonic analysis in the simplified circuit model, establishes a synchronous motor power grid model, simulates...

In the visual axis stabilization system under the background of the shipboard, it is necessary to use the high-frequency and low-frequency of the FOG output signal, respectively. For the practical application, this paper proposes a method which contains de-noising and signal separation. This paper analysis...

In order to increase the applicable input voltage scope of Pulse Adjustment (PA) controlled converter, a new control technique for DC-DC converters, Multiple Sets of Pulse Adjustment Based on Input Voltage Feed-forward Compensation (IVF-MSPA), is proposed in this paper. By introducing input voltage feed-forward...

Analytic Hierarchy Process(AHP)Model is established to determine the weight of each indicator to evaluate the water scarcity. Then the Entropy model is built to overcome weakness of excess subjective factors in AHP. By using Product integration method to combine two models, we determine the final indicators...

We address establishing a comprehensive mathematical model to analyze the performance of right-hand rule in right and heavy traffic. First, we build the overtaking model by considering some retricted conditions including the safe distance, speed limitations and human judgment. Next, we take account of...

The paper proposes an improved underdetermined blind source separation (UBSS) method of nonlinear mixture, which can be applied to the communication signals' separation during data link transmission in the complicated electromagnetic environment. The proposed method combines the advantages of wavelet...

In order to adapt to the grid test study a high power alternating current grid simulator that can simulate the network for various status and faults is proposed. The simulator could work in four quadrant operations,so that energy generated by distributed systems could flow into grid. The fundamental...

This paper mainly studies and analyzes the output voltage wave which is based on the control of step form SHEPWN. We solve the Switching Angles in the condition that the number of H bridge converter unit is n=3 and that the modulation ratio amplitude is m=0.8. We solve the problem by changing the nonlinear...

The hydraulic parameters are important for the numerical computation in which hydraulic conductivity is one of the most frequent. The horizontal component of hydraulic conductivity could be obtained with field trial. And the vertical component is usually computed with the horizontal one by dividing a...

Geometry optimization of a latent heat thermal energy storage (TES) unit using RT27 is investigated to figure out an optimal shape which obtains the best heat transfer property. A 2D model of the TES unit is built for numerical analysis and simulation. By applying constructal method for calculation,...

In the process of the intelligent network informatization, automation, and intelligent constantly improving, the requirements of power system for the transparency of the demand side are also getting higher and higher. Real-time and accurate load equipment identification for planning, load forecasting...

The need of antenna design and the basic principle of phased-array antenna are analysised. Then the rectangular-grid-plane phased array with circular boundary design of antenna which is shared by seeker and fuze is put forward. By choosing the parameters and number of elements, the antenna adaptively...

This paper aims at subsurface imaging a target buried in a spherical homogeneous medium. In order to study it, a monochromatic holographic penetrating radar with high resolution is involved. Different from the target in the plane media, spherical ones always result in spherical interference fringes which...

The electromagnetic radiation is invisible, colorless, odorless, silent, everywhere in our lives, but excessive electromagnetic radiation becomes another important source of pollution besides waste water, waste gas, and noise. This article is focusing on the hazards of electromagnetic radiation pollution...

This paper will explain the theory of building a differential equation model that helps the simple water containment vessel offering a constant-temperature. The simple water containment vessel has an open system without the temperature control unit, and the effect of the constant-temperature may be impacted...

During the development of the high-voltage power grid, the emergence of electromagnetic loop in the network is inevitable. To ensure the normal operation of the grid, it needs to deal with the problems brought by electromagnetic loop with scientific methods. In this paper, the impacts of the electromagnetic...

When the electronic computer aided design (ECAD) meets the mechanical computer aided design (MCAD), the process, method and scheme of the design in the new electronic products will have a qualitative leap, and the three-dimensional (3D) design is one of the best ways to realize the improvement of new...

In this paper, the main work is focused on the study of the magnetic saturation controllable reactor operating characteristics. Finite element analysis has been used to build the model of 10kV magnetic saturation controllable reactor, then compared with the experimental values calculated control characteristics,...

Traditional blind source separation (BSS) approach tries to recover all source signals from observed mixtures simultaneously. However, the recovered signals suffer from an inherent ambiguity on dilation and permutation. A flexible signal extraction process is deduced on the basis of kurtosis. Correspondingly,...

As a practical measure of non-Gaussianity, kurtosis generally represents the preferred technique for signal extraction. Here a learning rule is presented associated with kurtosis. It can recover one source signal owning the maximum absolute value of kurtosis among all original sources. Computer simulations...

The parameter estimation of a synchronous generator using the still frequency responses is presented in this paper. The required data is obtained to estimate the electrical parameters of the direct and quadrate axis models and the complete set of parameters was used in a five-order simulation model for...

Celestial navigation is a completely autonomous navigation method, but the measure based on star sensor and infrared horizon sensor has a low precision. Especially its direction to the earth measured by infrared sensor leads to great deviation. Aimed by this consideration, we propose a vision-based method...

With the construction of large-scale wind farm, most of wind farms' geographical environment is more open, vulnerable to line switch tripping caused by large-scale wind power failure. Therefore line lightning protection becomes important work of wind farm construction. In this paper, lines lightning...

For the application of electrical conductivity measurement of ice core in the analysis of ice core processing, foreign hand-held electrical conductivity measurement unit is developed and updated by using servo motor to automatically control electrical conductivity measurement. while the corresponding...

In previous works, they mainly concern on optimizing transmitted antenna to maximize energy efficiency(EE). But the transmitted power optimization is also necessary for the improvement of EE. Because too large or too small transmitted power will lead to the decline of EE. This paper proposes a joint...

According to the analysis of phase noise and timing jitter in oscillators, a simple method of converting phase noise to timing jitter is presented and calculation examples are given. The result shows that the calculation timing jitter and measured value are very close. Therefore the timing jitter can...

By analyzing the structure and properties of photonic crystal fiber (PCF), a method for calculating cladding-effective-index was proposed. Then, the influence of changing the diameters of fiber core and cladding air holes and the interval of cladding air holes on the single mode property, dispersion,...

A new DOA estimation method with high resolution is proposed in this paper for vehicular radar and communication integration system in V2V scenario. This method uses digital beam forming algorithm to estimate the weight vector, from which the DOA of other vehicles can be estimated. Firstly, we presents...

With the development of large-scale wind power integration and electricity markets, wind farms business were asked to participate in the electricity market. Because of the volatility and unpredictability of wind power, the wind farm suppliers contribute to obtain benefits in the bidding at the same time,...

This paper introduces the principles of electricity price-issuing model under a transparent task and a supporting expansion agreement. Moreover, it describes the technical features and advantages of the electricity price-issuing model by comparing it with traditional transparent transmission terminals....

In order to ensure energy collecting efficiency of oscillating wave energy converter in the actual application of Donggang's sea area in China, Flow 3D software is used to simulate hydrodynamic performance of different shape of the buoy. The result is : The average mass center z coordinates of the butterfly...

Distributed energy is effective in the construction of conservation oriented campus, the campus power distribution system into the green renewable energy, can bring considerable economic benefits. Green renewable energy can reduce the environmental pollution and governance problems of the traditional...

Solar energy holds great significance in the research programs on renewable energy. Recent studies show that with the use of solar energy, we can create a movement of air in the form of artificial wind. This air flow is used to drive one or more wind turbines and produce electrical energy. At this conversion...

According to the production process characteristics of transit crude oil depot, the evaluation model for the major energy-using equipment in crude oil depot was established. According to the law for energy conservation and transformation, the energy balance equation for crude oil depot was established....

Abstract: In order to improve authenticity and interactive of the tractor driving simulator system, mainly adopts double polarity 555 chip design for tractor driving simulator of turn signal circuit. Then specify bipolar 555 chip unsteady work mode setting method and principle ,and gives the tractor...

Although having advantages of high integration, Low power consumption and strong processing capability, etc., it is not easy for SDRAM to be developed and applied because of its timing complexity. To reduce costs, and shorten the development period, combining with features of strong reconfiguration and...

High power transient electric field is coupled into the interior of the electronic system easily. How to detect the field signal and reduce the influence of the field has become one of the most important fundamentality research projects. However, single sensor cannot detect the wide bandwidth signal...

the electric vehicle industry in our country is developing rapidly. However, in terms of the interchange and versatility of charging interface of electric vehicles, the research on consistency detection technology is not enough, which leads to poor compatibility of the interface of charging device of...

With the development of computer technology and the rapid prevalence of the Internet Power started to use computer to realize the unification and standardization. So IEC puts forward IEC 61970 specification series, which makes EMS normalize and interconnects different EMS.CIM has been defined by IEC61970...

Weak part analysis of a system is a key element in a system reliability quantification process. It enables the weakest areas of a system to be recognized and assists in directing remedial measures for improving the system reliability. This paper proposes an unreliability tracing technique for a ring...

In this paper, the pressure effects of arcing faults in the shipboard MV switchboard are analyzed. First the estimated method of arcing fault energy is discussed. Then the pressure model of the MV switchboard due to arcing fault is put forward. And based on Simulink platform, simulations are processed...

Bus differential protection is effective measures to cope with the bus-bar fault in ship MVDC system. A realization of DC bus-bar protection is based on digital protection device which are suitable for complex medium voltage power system. Firstly, the principle of DC bus-bar differential protection,...

Massive sky survey data are produced by the LAMOST large-scale survey project, which provides opportunities to search for some unusual and rare astronomical spectra. The low quality spectra still accounted for about half of total LAMOST observed data at present. For these low quality spectra, research...

The condition detection of gearbox is of great significance to improve the operation level and reduce the maintenance cost of the wind turbine. Based on the nonlinear state estimation (NSET) method, the temperature model of the gear box bearing is set up to estimate the states of gear box and the estimated...

Wind power prediction is important for the power system with plenty of wind power. This paper studies the method combined with empirical mode decomposition and extreme learning machine for short-term wind power prediction. The empirical mode decomposition method is utilized to decompose the signal of...

With the national emphasis on energy conservation and environmental protection and as the primary energy consumption and emissions, more and more people pay attention on the energy saving of thermal power plant. In this paper, some relevant indicators for the energy saving of thermal power plant are...

By analyzing basic requirements and characters of millimeter-wave radar signals, this paper proposed signal processing methods using Linear Frequency Modulated Continuous Wave based on FPGA+DSP. FPGA controls peripheral ADC and DAC to complete modulation triangular wave generation and radar Intermediate...