OALib 期刊
  OALib Journal (ISSN Print: 2333-9705, ISSN Online: 2333-9721)是一本多合一的开源期刊,以同行评审的方式出版发行文章,其所涵盖的研究领域多达311种领域。本刊发表的全部文章均可在期刊网站上免费阅读、下载、引用和传播。单篇文章出版费用为99美元。详情请咨询[email protected] 或 QQ: 3279437679。现在就去投稿!
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Jan 16, 2019Open    AccessArticle

Design of Permanent Magnet Synchronous Motor Control System for Electric Vehicle Air Conditioning Compressor Based on Vector Control

Kuan Shi, Yongjun Chen, Zhou He, Jie Wang, Yinsheng Li
Permanent magnet synchronous motor (PMSM) has the advantages of small size, light weight, simple structure, reliable operation, high power factor, easy heat dissipation and easy maintenance. It has become the best choice for electric vehicle air conditioner compressors, but in actual working conditions, the air conditioner compressor has the problem of excessive noise and serious system turbulence, which makes the air conditioner

Dec 28, 2018Open    AccessArticle

Thermal Performance Analysis of the Battery Thermal Management Using Phase Change Material

Limin Song
In this paper, the phase change material passive thermal management system for the lithium ion battery module is established, in which the mock-up battery is used to replace the real battery for the simulation. The temperature rise characteristics of the battery and the melting process of the phase change material in the passive thermal management system are determined through the numerical si

Nov 26, 2018Open    AccessArticle

Experimental Investigation of Visualization and Package of Phase Change Material for Thermal Management of 18650 Lithium-Ion Battery

Qingyu Wu
The visualization of phase change process of phase change material (PCM) for thermal management of 18650 lithium-ion battery was studied by experimental method. The configuration consists of a semi-cylindrical battery allocated in the center of a semi-concentric housing made of aluminum, composite PCM and a transparent plate of 3 mm thick made of acrylics. The results show that the composite P

Sep 20, 2018Open    AccessArticle

Research on Point Charge Measurement Model of Electrostatic Sensor

J. W. Wang
In the mathematical model of electrostatic sensors established by Yan Yong in previous studies, the thickness of the insulating layer was not taken into account in the model. In order to study the static monitoring of electrostatic sensors in more depth, this paper considers the influence of insulation layer when establishing the mathematical model of the sensor. By establishing a mathematical

Sep 11, 2018Open    AccessArticle

The Design of Surface Acoustic Wave Receiving Circuit Based on Piezoelectric Transducer

Hao Jiang, Fuqiang Zhang, Zhao Guan
A type of Surface Acoustic Wave (SAW) receiving circuit with high stability is introduced in this paper on the basis of analyzing common surface acoustic wave receiving circuits. The circuit design is based on receiving transducer and the center frequency is 1 MHz. This circuit includes pre-amplification electric circuit with high input impedance, automatic gain amplifying circuit based on VCA810, tertiary amplifying circuit, filt

Jul 25, 2018Open    AccessArticle

Design of a High Frequency Driving Circuit of Surface Acoustic Wave Transducer

Guan Zhao
In this paper, a high frequency driving circuit of surface acoustic wave transducer has been designed to separate oil from oil/water mixed droplet. The transmission frequency of the surface acoustic wave transducer driving circuit can be up to 1 MHz. The transmit frequency of conventional ultrasonic driving circuit is mostly 40 kHz. However, the high transmit frequency driving circuit presents a good stability and accuracy. By est

May 23, 2018Open    AccessArticle

Optimization Comparison of Stand-Alone and Grid-Tied Solar PV Systems in Rwanda

Samuel Bimenyimana, Godwin Norense Osarumwense Asemota, Paula Jeanne Ihirwe
Solar power has gained great usage in electricity generation world-wide, and stand-alone is common in Rwanda. Site visits and energy audit estimates for a typical residential house in Rwamagana district, were used to cost effectively compare stand-alone and grid-tied PV systems able to supply 7.2 kWh/day, load. Algorithms design of lifetime costs and benefits were developed, to analyse total daily energy requirements using Frequen

Apr 28, 2018Open    AccessArticle

Direct Current Charger Hardware Platform Design

Yu Zhang
In order to reduce the pollution caused by fuel vehicles to the environment, electric vehicles are becoming the means of transportation. The replacement of fuel vehicles by electric vehicles is a future trend. Based on practical requirements, a 120 kW direct current charger has been designed. Taking the MK60DN512 as the core controller, a direct current charger control system is designed and implemented. The overall solution of th

Apr 19, 2018Open    AccessArticle

The Design and Realization of PKE System Based on ARM9

Tongfei Tu, Suyun Luo
In order to solve the problem that the PKE (passive keyless enter) with a fixed-frequency used in middle and low grade cars was interfered and broken easily, which led to the damage of anti-theft system and even the loss of cars, and in order to ensure the PKE can be used long and be expanded and upgraded in the future, a new, low power consumption and high reliability PKE was designed with the S3C2410 micr

Apr 12, 2018Open    AccessArticle

Automatic Irrigation System Using Android

Souvanxay Lorvanleuang, Yandong Zhao
Laos is an agricultural based country. As agriculture is the main source of food for any country, it is important to have a proper irrigation system. This paper shows a design of automatic irrigation system based on android application using Raspberry Pi microcontroller, soil moisture and temperature sensor to help a famer to control and monitor a farm. This work facilitates the farm irrigation by switching the pump motor ON/OFF t