GPIO_KeyInterrupt

又一篇关于音频动态范围压缩的相关珍贵论文，这是一个很实用但是又很少有人关注的领域，希望对大家有帮助！这是第15篇(And an audio dynamic range compression on the relevance of valuable papers, it is a very pragmatic but also very few areas of concern, and they hope to have everyone help! This is the first 15)

这个是GPS和SINS的组合导航系统的研究论文,对导航研究者有很大的参考意义.(This is a combination of GPS and SINS navigation system research papers, researchers have a lot of the navigation of the reference value.)

学生成绩统计查询系统，有学生、课程、统计、查询、系统说明五个菜单，单击不同的菜单会有子菜单出现。很好的实现管理学生成绩问题。(Student performance statistics query system, students, curriculum, statistics, query, the system shows five menu, click a different menu sub-menu will appear. Achieve good management of student achievement issues.)

LLC系统设计，主要介绍了经典LLC设计思路和计算方法，很实用！(System design of LLC)

Exact Thresholds and Optimal Codes for the Binary-Symmetric Channel and Gallager’s Decoding Algorithm A

说明：  快速原型化数控系统实时仿真平台研制CNC rapid prototyping platform(CNC rapid prototyping platform for developing real-time simulation)

说明：  在对永磁风力发电机的基本理论进行论述的基础上，分析了变转速变桨距控 制策略，并基于Matlab／Simulink建立了风力发电机模型，通过仿真分析了最大功率跟踪 和变桨距控制下发电机的性能。(this paper analyzes variable speed and variable pitch control strategy on the foundation of discussing basic theory of permanent magnet wind turbine generator．Then it builds simulation model of permanent magnet wind turbine generator based on Matlab／simulink and analyzes performance of generator under maximum power tracking and variable pitch contr01．)

非常好的路由器、交换机配置介绍，希望能给大家带来帮助。(very good router, switch configuration, in the hope of giving us some help.)

为了更好地进行谐波和无功功率的补偿与控制，叶FBD(Fryze一Buchholz一DPenbrock)法的定 义进行了完善，并给出了补偿电流检测的直接法和间接法，在三相电力系统中对FBD间接法进行 了推广研究，利用参考电压进行投影变换，不仅可以检测出功率电流和零功率电流，还可以检测出 基波有功电流、基波无功电流、谐波电流以及任意次谐波电流等，大大拓展了FBD法的应用范围和领域。MATI一AB仿真和实验结果表明了所定义和推广的电流检测方法的正确性和有效性。 (In order to improve the performance of active power filter(APF) harmonic current detection method, a harmonic current detection based on FBD(Fryze-Buchholz-Dpenbrock) algorithm was proposed. Reference voltage was generated by phase locked loop(PLL), and load current was projected to reference voltage, and then the active power fundamental current, reactive power fundamental current, harmonic current, fundamental negative sequence current, any harmonic current and so on can be detected accurately by using low-pass filter(LPF), and in the case of distorted voltage, the method was also applicable. The simulation results verify the fast dynamic speed, high detection accuracy, simple implement and good project value of the proposed algorithm. MATLAB simulation results confirm the feasibility and validity of the method.)

：介绍了一种基于数字信号处理器（DSP）的移相调频（Phase-Shifted and Frequency-Varied，PSFV）PWM控制 逆变电源，给出了主电路拓扑结构，分析了其控制原理并设计了其控制程序流程图。新颖的PSFV 控制能够实现输出 电压90％的调整率，输出电流波动小于单纯移相调功PWM方式，并在轻载时保持连续。功率开关器件零电压零电流 通断（Zero-Voltage-Zero-Current Switching，ZVZCS）软开关的实现，有利于进一步提高开关频率和降低开关损耗。采用 高性能的专用DSP 芯片TMS320F2812 实现了系统的数字控制，满足了系统控制的灵活性和实时性，减小了系统的 体积和生产成本。仿真分析和实验结果证明了此控制模式的可行性与合理性。()