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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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摘要:由于步进电动机调速系统具有非线性等特点,使得利用简单模糊控制与传统PID控制精度不高,因此文中提出利用模
糊PID控制器实现对步进电动机调速系统进行控制的方法,并设计了模糊PID控制器。文中首先建立了步进电动机的数学
模型,并根据数学模型推导了其传递函数 然后介绍了模糊PID控制器结构,以及模糊控制规则的生成方法,并且对该控制
方案进行数字仿真。仿真结果表明:该方法调节精度较高,动态响应快,无超调,有一定的可行性。
-Abstract: As the stepper mot
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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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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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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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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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随着性能的逐渐提高以及成本的不断降低, FPGA 在嵌入式领域的应用日益广泛。本文介绍了PetaLinux 操作系
统的特点和目录结构, 并分析了基于MLD 的BSP 自动生成技术, 最后总结了PetaLinux 操作系统移植的具体方法。这
对设计基于MicroBlaze 处理器的嵌入式系统具有重要指导意义。-With the performance of gradually increasing and continuous cost reduction, the applicatio
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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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In this paper, a novel strategy of maximum power point tracking is presented for photovoltaic power generation systems based on Fibonacci
search algorithm to realize simple control system to track the real maximum power point even under non-uniform
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Abstract—This paper proposes a new strategy to meet the controllable
heating, ventilation, and air conditioning (HVAC) load
with a hybrid-renewable generation and energy storage system.
Historical hourly wind speed, solar irradiance, and load d
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考虑分布式电源的配电网电压控制新方法。针对含分布式电源的配电网电压越限问题，提出了一种基于灵敏度分析进行综合调节分布式电源出力和投切电容器组的电压控制新方法。当配电网出现节点电压越限，通过计算各个节点的注入无功功率对电压的灵敏度，以系统节点电压偏移最小为目标函数，采用和声算法，综合确定调节分布式电源出力大小和投切电容器组大小，并对分布式电源是否参与电压控制的控制效果和是否按电压灵敏度调节电压的控制效果进行了比较。-New Method of Voltage Control Considering
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Different types of distributed generation (DG) are
broadly used and optimally placed in a distribution system to
improve its performance. Since the network configuration affects
the system operational conditions, the network reconfiguration
a
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