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有关自动组卷的文章.试题库自动组卷系统的算法设计与实现.-the automatic generation of paper articles. Questions the automatic test system of the algorithm design and implementation.
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PIC单片机含具有PWM功能的外围功能模块(CCP),利用此模块更容易通过软件实现SPWM,且具有更快的执行速度。本文采用软硬件结合设计的方法,利用面积等效法,并且基于PIC单片机实现对试验逆变系统的SPWM控制。 -PIC microcontroller has a PWM function with the external function module (CCP), more easily using this module software SPWM, and has a faster
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gold序列产生方法的m文件,其中包含m序列的产生,是cdma系统必要的仿真源程序代码!-m-sequence generation method of gold paper, which contains the m sequences and is necessary for cdma system simulation source code!
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语音编码方案的选取对移动通信系统的通话质量、信道容量等有重要影响。本文讨论了TD-SCDMA系统中AMR语音编码的自适应机制,同时分析了AMR中代数码本线性预测(ACELP)算法及实现过程。该方案可以在一块TMS320C5510上实现。-The selection of voice coding schemes for mobile communication systems the quality of the call, such as channel capacity have had a
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提出了一种基于FPGA+DSP结构的北斗一代三星无源定位系统设计方案。-A three-satellite passive position system design scheme of BeiDou the first generation based on FPGS+DSP is presented in the paper.
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基于变速恒频双馈风力发电系统的理论分析,文中将应用MATLAB/Simulink建立整个系统的模型,主要包括风力机、双馈发电机(含转子侧和网侧变换器)、控制器(含网侧变换器控制器、转子侧变换器控制器)。通过建立的模型对仿真波形进行分析,验证模糊控制器的可行性。-Based VSCF doubly fed wind power generation systems theory, this paper, the application of MATLAB/Simulink model for th
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《Z源逆变器光伏并网系统模型及电路参数设计》
摘要:建立了Z 源逆变器光伏并网系统的小信号模型,定量分析了光伏模块输出电压动态性能与主电路各参数间的
关系。光伏模块输出电压的最大功率点跟踪(MPPT)控制与系统采样平均周期关系密切,而采样平均周期又受主电路
无源元件参数大小的影响。定量分析小信号模型建立了各部分之间的传递函数,这对选择MPPT 控制采样平均周期
和主电路参数优化设计起到了关键性指导作用。实验证明了理论分析的正确性和该模型的实用性。
关键词:逆变器/ 分布式发电
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This White Paper explains why an external low noise amplifier results in a better performance.
Next generation mobile handsets will be equipped with GSM, WLAN, Bluetooth and GPS.
Integrating all these functionality onto one printed circuit board
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试卷生成系统的源代码,可以完成试卷的自动生成,试题的自动生成,删除等很多功能。-Paper Generating System source code, you can complete the automatic generation of the papers, the automatic generation of questions, delete, and many other functions.
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风力发电机组不同于火电等传统发电机组的最大之处
在于其原动机功率的本质不可控,这是由风速的易变性和不
可控性造成的。风速状况对风力发电系统的性能有着重要的
影响,也使得风速模型成为风力发电系统仿真模型的重要部
分。该文针对风速随机变化的特性,在风速统计特性研究的
基础上,用自回归滑动平均(ARMA)方法建立了具有一定
功率谱密度特性的风速模型。对该模型所模拟的风速序列进
行了分析和验证,并与现有仿真程序中风速模型的结果进行
了对比,结果表明该文提出的ARMA模型能
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文档在分析传统组卷算法的优缺点和组卷策略参数的基础上,用遗传算法设计并实现了一个自动组卷系统-Document the parameters of the advantages and disadvantages of paper and test strategies based on the analysis of traditional Algorithmic an automatic test paper generation system was designed and implem
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It is a paper on Novel High Step-Up DC-DC Converter
for Distributed Generation System.
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This paper proposes the design and implementation of the functional electrical stimulator using the ultra low power microcontroller MSP430 , which restores the functionality of paralyzed portion of human body due to spinal cord injury (SCI) that cons
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随着可持续发展理念的深入,风力发电作为可再生能源得到了快速的发
展。风力发电系统的仿真在风力发电系统分析,发电量分析和电网的能量的
分析中都起到了非常重要的作用。
本文应用 MATLAB 软件,对风速、风轮、传动机构、发电机、与风力发
电相关的电力电子系统建立了数学模型,并进行仿真进方面的研究,得到了
可供分析的仿真结果。介绍了风力发电机组的控制技术,主要是变桨距控制
和发电机变速控制,并利用 MATLAB 软件对变桨距控制系统和低于额定风速
和高于额定风速时的变速风
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This paper presents the modeling and simulation of a
high-speed single-shift micro turbine generation system. This
unit has four parts: a compressor-turbine, a permanent magnet
generator, a three phases bridge rectifier and inverter. The
mode
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中文核心期刊电网技术杂志上的一篇介绍风光储联合发电系统储能容量对有功功率的影响及评价指标的文章-Chinese core periodical grid technology magazine ran a scenery storage combined power generation system is introduced in this paper the influence of the energy storage capacity of active power and evalu
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电机工程学报上的一篇关于风光储联合发电系统的组合建模与等值方面的文章,介绍的很详细,推导过程值得参考-Electrical engineering in the paper an article about landscape store the combination of combined power generation system model and the equivalent articles, introduction is very detailed, derivation i
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Modeling and Control of a DFIG-Based Wind
Turbine During a Grid Voltage Drop
Doubly-fed induction generators (DFIG) are widely
used in wind energy generation systems. During a grid voltage
drop, performance is degraded with rotor over current
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This paper presents a modified adaptive Kalman filter
for sensorless current control of a three-phase inverter-based distributed
generation system. Measurement and digital signal processor
delays have been compensated by using a modified Kalman
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一篇外文论文,对光伏发电系统的数学建模,matlab仿真提供了详细的步骤,对从事光伏新能源系统设计,并网技术研究的本科生,硕士生,及相关工程技术人员会有一定帮助。(A foreign paper provides detailed steps for the mathematical modeling and MATLAB simulation of photovoltaic power generation system. It will be helpful for undergraduat
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