路面裂缝检测识别系统设计

按一次按钮仿真一次掷骰子，同时记录下相应数字出现次数，是一个随机过程仿真，基于labview，简单易懂

提出了一种基于DSP控制的并联电压型有源电力滤波器的设计方案,重点讨论了系统控制策略和控制系统硬件设计方面的问题(And presents a design scheme of parallel voltage-based active power filter based on DSP control, especially discusses the problems of system control strategy and control system hardware design)

说明：  For PCA9685. STM32F405 is needed

说明：  It is an iterative algorithm that starts with an arbitrary solution to a problem

说明：  300Hz带阻滤波，用matlab中fdatool设计参数，然后用labview开发(300Hz bandstop filter, IIR. Firstly, the coefficients are calculated by Fdatool design tool in matlab, and then developed by labview.)

说明：  该过程利用了这样一个事实:在静态条件下，加速度计输出矢量的模量与重力加速度的模量相匹配。该校准模型结合了各轴的偏置和比例因子以及交叉轴的对称性 的因素。通过高斯-牛顿非线性优化计算参数。(The process takes advantage of the fact that the modulus of the accelerometer output vector matches the modulus of the gravitational acceleration under static conditions. The calibration model combines the offset and scale factors of each axis and the symmetry of the cross axis factors.)

说明：  目前我们的生活中到处都有基于ARM架构的芯片，移动互联网时代到来之后，尤其在智能手机领域，ARM可以说是处于统治地位，其他的类似平板电脑以及安卓设备等也都在采用ARM架构。 不过虽然ARM应用这么广泛，但是相关教材却比较少，让很多爱好者学习比较困难，而《ARM汇编语言官方手册》这本官方手册的发布给正在研究ARM汇编的人们提供了很大的帮助。文末有《ARM汇编语言官方手册》pdf免费资源分享，欢迎大家下载学习。 《ARM汇编语言官方手册》一共分为7个章节，不仅详细介绍了ARM的体系结构，还对汇编语言模块进行了深入的探究。手册中整理了绝大部分汇编中可能遇到的语法格式问题和ARM指令，给从业者研究ARM带来了很大的便利。 如果你想要赶上万物智联和人工智能的风潮并加入其中，那ARM绝对不可错过，现在文末免费分享《ARM汇编语言官方手册》PDF版本，欢迎下载学习。(At present, there are chips based on ARM architecture everywhere in our life. After the arrival of the mobile Internet era, especially in the field of smart phones, arm can be said to be in the dominant position. Other similar tablet computers and Android devices are also using ARM architecture. However, although arm is widely used, there are few related teaching materials, which makes it difficult for many lovers to learn. The official Manual of arm assembly language provides great help for people who are studying arm assembly language. At the end of the article, there is "arm assembly language official manual" PDF free resource sharing, welcome to download and learn.)

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thinking.in.flexible.engineering 大道至简 向你讲述 软件开发中 的两个内容：做什么和为什么做(thinking.in.flexible.engineering Road to SR telling you about the software development of two elements : what to do and why to do)

iot security challenge