slyt277

中国海域潮汐预报软件Chinatide的应用(China Sea tide forecasts Chinatide application software)

From the principles of electrical engineering it is known that the 3-phase quantities of the 3-phase AC machines can be summarized to complex vectors. These vectors can be represented in Cartesian coordinate systems, which are particularly chosen to suitable render the physical relations of the machines. These are the field-orientated coordinate system for the 3- phase AC drive technology or the grid voltage orientated coordinate system for generator systems. The orientation on a certain vector for modelling and design of the feedback control loops is generally called vector orientation.

本文将选用一块支持 BDS/GPS 双模定位并具有低功耗特 点的芯片 ATGM332D-5N-3X 作为手持定位终端的定位模块。 ATGM332D-5N-3X 支持两种卫星导航系统进行组合定位，包括中国的 BDS （北斗卫星导航系统）， 美国的 GPS 。该模块具有 32 个跟踪通道，两个卫星导航系统的 GNSS 信号可同 时被接收，从而实现联合定位的功能。 ATGM332D-5N-3X 模块具有高灵敏度、 低功耗、低成本等特点，适用于船舶导航、车载导航、可穿戴设备等。(This article will choose a piece of support BDS/GPS Dual mode positioning with low power consumption Point chip ATGM332D-5N-3X As a positioning module for a handheld positioning terminal. ATGM332D-5N-3X Support two satellite navigation systems for combined positioning, including China. BDS (Beidou satellite navigation system), American GPS . The module has Thirty-two A tracking channel, two satellite navigation systems GNSS Signal can be identical It is received and the function of joint location is achieved. ATGM332D-5N-3X The module has high sensitivity, Low power consumption, low cost and other characteristics, suitable for ship navigation, vehicle navigation, wearable devices, etc.)

实现红外线接收功能 主芯片为AT89S51(To achieve the main function of the infrared receiver chip AT89S51)

ARM开发环境配置，基于Jlink仿真器与AK100仿真器的flash和SRAM仿真。(Configuration of ARM Development Environment)

stm32，通过spi总线实现对于TI的2543AD进行读写操作，串口uart输出数据(stm32, achieved through the spi bus for read and write to TI s 2543AD, serial uart output data)

Hadoop简单应用案例，包括MapReduce、单词统计、HDFS基本操作、web日志分析、Zookeeper基本使用、Hive简单操作等(Hadoop simple application cases, including MapReduce, word counting, HDFS basic operations, web log analysis, Zookeeper basic use, Hive simple operation)

这个一个关于储能电池充放的仿真，电路采用了DC_DC变换控制。(The storage battery charge and discharge about simulation, the circuit uses DC_DC conversion control)

说明：  一个万能的键盘扫描程序，采用宏定义的方式屏蔽了硬件，能够非常方便地移植到任何一款MCU上(A universal keyboard scanning procedures, the use of macro way of shielding the definition of the hardware, can be easily ported to any MCU on a)

AT89C2051驱动步进电机的电路和源码(用keilC51)(AT89C2051 stepper motor drive circuits and source code (using keilC51))