numeric-trapezium

开关电源测试 标准 (Switching power supply testing standards)

设计的电机驱动控制系统的主要功能有①控制电机的正转、反转；②为电机设计控制速度，有5m/s、10m/s、15m/s三个等级；③给电机设定转动的位移，让电机按照设定的位移移动；④1602液晶上显示电机的位移和速度；⑤利用4*4键盘数字输入控制电机的速度、按键C和D控制正反转、按键B控制三个档位的速度。(Using SCM software and hardware systems to achieve precision stage displacement, velocity through three or four phase stepper motors (motors meet the acceleration and deceleration characteristics), control the direction, location. Completion of the control circuit board hardware, including CPU, power amplifier, buttons, LED display. Software can be implemented in C.)

基于51单片机的数字电子秤，有文档的详细说明(A digital electronic scale based on 51 single chip microcomputer with detailed description of the document)

说明：  power electronic machine model

基于430的DC_DC变化，采用PID控制，调节PWM的输出占公比，从而反馈调节输出电压(Based on 430 DC_DC change, using PID control, adjust the PWM output accounted common ratio, thus regulating the output voltage feedback)

射频技术 基于rc500的射频开发系统 频率稳定 不易失真(RF radio frequency technology development system based on rc500 frequency stability is not easy distortion)

本程序是用51单片机的PS2鼠标驱动程序(This procedure is used 51 single PS2 mouse driver)

FreeRTOS_KL16FreeRTOS是一个迷你的实时操作系统内核。作为一个轻量级的操作系统，功能包括：任务管理、时间管理、信号量、消息队列、内存管理、记录功能、软件定时器、协程等，可基本满足较小系统的需要(FreeRTOS is a mini real time operating system kernel. As a lightweight operating system, features include: task management, time management, semaphores, message queues, memory management, recording function, software timer, coroutine, can meet the basic needs of the smaller system)

说明：  用单片机实现的DS1621温度传感器，测量周边环境的温度(With MCU' s DS1621 temperature sensor to measure the temperature of the surrounding environment)

本作品以MSP430单片机为核心， 基于DDS原理，通过查表方式输出步进量为10HZ，频率为100HZ~2KHZ的正弦波。两路被测信号通过过零比较、异或和低通滤波整流，实现了对相位差的测量，误差小于(This works with MSP430 microcontroller as the core, based on DDS principle, by look-up table output step sizes for the 10HZ, frequency of 100HZ ~ 2KHZ sine wave. Two by the signal zero-crossing comparator, XOR, rectification and low-pass filtering, the realization of the phase of the measurement error is less than)