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Description: 运动控制卡、研华等资料\\PAC编程软件-KW-Multiprog下函数及功能块库的使用说明-Motion Control Card Advantech information \\ PAC programming software-KW - under Multiprog function and function block library use
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Size: 418489 |
Author: 邹松青 |
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Description: 中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。
对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。-induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz - 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW
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Size: 5144 |
Author: wq57 |
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Description: 针对高频感应加热电源中用传统的模拟锁相环跟踪频率所存在的问题,提出一种非常适合于高频感应加热的
新型的数字锁相环。使用FPGA 内底层嵌入功能单元中的数字锁相环74HCT297 ,并添加少量的数字电路来实现。最后利
用仿真波形验证该设计的合理性和有效性。整个设计负载范围宽、锁相时间短,现已成功应用于100 kHz/ 30 kW 的感应加
热电源中。
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Size: 181584 |
Author: lyjIC |
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Description: 1.本程序用以实现对线性链表的维护、插入、删除、输出等功能，在该实验设计中是以某商家电部门的库存为模型，实现了对该商品库存的更新，如商品的进货、提货的业务，以入对商品库存的修改、查询、删除等等。-1. The procedures used to achieve linear list maintenance, insert, delete, output functions, in the experimental design is a commercial appliance sector inventory model of this merchandise inventory updates, such as the purchase of goods and delivery of services with a pair of goods into inventory changes inquiries, delete, etc..
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Size: 35952 |
Author: 陈天华 |
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Description:
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Size: 35840 |
Author: 陈天华 |
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Description: kwic(keyword in context)系统演示源代码及文档，基于pipeline-filter模式，.net平台编写。-kwic (keyword in context) system demonstration source code and
documents, based on pipeline-filter pattern, net platform compilation.
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Size: 420864 |
Author: 郭 |
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Description: 运动控制卡、研华等资料\PAC编程软件-KW-Multiprog下函数及功能块库的使用说明-Motion Control Card Advantech information \ PAC programming software-KW- under Multiprog function and function block library use
Platform: |
Size: 417792 |
Author: 邹松青 |
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Description: 中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。
对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。-induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz- 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW
Platform: |
Size: 5120 |
Author: wq57 |
Hits:
Description: 针对高频感应加热电源中用传统的模拟锁相环跟踪频率所存在的问题,提出一种非常适合于高频感应加热的
新型的数字锁相环。使用FPGA 内底层嵌入功能单元中的数字锁相环74HCT297 ,并添加少量的数字电路来实现。最后利
用仿真波形验证该设计的合理性和有效性。整个设计负载范围宽、锁相时间短,现已成功应用于100 kHz/ 30 kW 的感应加
热电源中。-For high frequency induction heating power supply with traditional analog phase-locked loop to track the frequency of the problems and put forward a very suitable for high frequency induction heating of a new type of digital phase-locked loop. The use of FPGA embedded inside the bottom of the functional unit of the digital phase-locked loop 74HCT297, and add a small amount of digital circuitry to achieve. Finally the use of simulation waveform to verify the reasonableness of the design and effectiveness. Throughout the design load range, phase-locked time is short, has been successfully applied to 100 kHz/30 kW induction heating power supply.
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Size: 181248 |
Author: lyjIC |
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Description: 智能小汽车的设计程序，相信对大家有帮组的 哈 -Smart car design process, I believe we have a group to help Kazakhstan
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Size: 6736896 |
Author: 文婷 |
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Description: 文章：利用三次样条函数计算开挖体积，有matlab代码。-Article: the use of cubic spline function calculated excavation volume, there is matlab code.
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Size: 207872 |
Author: rsp2001 |
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Description: 凯撒和维吉尼亚加密方法，两种算法都不是很复杂，基本原理也相似所以都写入一个文件中来表示。-Caesar and Virginia encryption method, two algorithms are not very complicated, so the basic principles are also similar to a document written to express.
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Size: 1024 |
Author: 李辰 |
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Description: 经典体系风格实现之事件系统，以kwic为例。该系统采用事件系统已经实现了附件中的作业1、2功能-The KWIC index system accepts an ordered set of lines each line is an ordered set of words, and each word is an ordered set of characters. Any line may be "circularly shifted" by repeatedly removing the first word and appending it at the end of the line. The KWIC index system outputs a listing of all circular shifts of all lines in alphabetical order.
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Size: 357376 |
Author: thl |
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Description: 提 出 了 一 种 基 于 DSP的 消 除 SPWM全 桥 逆 变 器 直 流 偏 磁 问 题 的 控 制 方 案 ， 采 用 TI公 司 的 DSP芯 片 TMS320F240来 实 现 。 在 一 台 400 Hz 6 kW样 机 上 进 行 了 实 验 ， 实 验 结 果 表 明 该 方 案 能 较 好 地 解 决 全 桥 逆 变 器 中 的 直 流 偏 磁 问 题 。-A DSP-based full-bridge SPWM inverter to eliminate DC bias control issues, using TI' s DSP chips to achieve TMS320F240. In a 400 Hz 6 kW experimental prototype was carried out, experimental results show that the program can better address the full-bridge inverter of the DC magnetic bias problem.
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Size: 1052672 |
Author: 班小栓 |
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Description: 一个很好的学校源码 利用java+serverlet+sql2005
非常值得刚入门的JAVA爱好者学习
主要功能
1.前台：学校概述，师资力量，课程介绍，校园风采，联系我们，在线报名（页头菜单），后台管理
2.后台管理：用户管理，学生信息管理，链接管理，论坛管理和上传资料管理
3.开发工具：dreamweaver 8.0， myeclipse 6.0(Tomcat)，sqlserver2005
-A good source to use the school java+ serverlet+ sql2005 very worthwhile just to get into the main function of a learning JAVA lovers. Front: school overview, teaching staff, course descriptions, campus style, contact us, online registration (page header menu) , background management 2. Background management: user management, student information management, link management, forum management, and upload data management 3. development tools: dreamweaver 8.0, myeclipse 6.0 (Tomcat), sqlserver2005
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Size: 5283840 |
Author: 谭易林 |
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Description: 文献介绍了基于小波分析和kalman滤波的交通流量预测方法，应用组合模型进行预测，比单一模型较为精确-Literature describes the wavelet analysis and kalman filtering based on traffic forecasting methods, the application composition model to predict more accurate than a single model
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Size: 111616 |
Author: connie |
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Description: KWIC即keyword in context，是学习软件体系结构时最常用的例子，我的源码给出了这个例子的面向对象方式的实现。-KWIC that the keyword in context, is to study the structure of the software system, the most commonly used example, I give the source code of this example implementation of object-oriented manner.
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Size: 13312 |
Author: zhouchengcheng |
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Description: constant-voltage/current mode
operation.
programmable power supplies
incorporate current mode switching
rates up to 100 kHz in high power
density, low profile chassis. Utilizing
unique packaging techniques, the
DCS Family provides continuous full
output power (1 kW or 3 kW) in any
volt/amp combination within the rated
output voltage and current limits.
Options include an internal IEEE-488/
RS 232 interface, isolated analog
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Size: 231424 |
Author: hhhh |
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Description: MATLAB仿真，主要是三厢10KW的晶闸管整流仿真，可以研究研究。-10 kW Thyristor Controlled Rectifier
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Size: 7168 |
Author: 万福 |
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Description: PLC编程说明文档，基于Advantech的开发工具KW Multiprog-PLC program document, based on Advantech develop tool KW Multiprog
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Size: 14417920 |
Author: 史红杰 |
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