基于STM32直流电子负载的设计与实现

电子负载由于其诸多优点。现已替代传统负载广泛应用于电源类产品测试环节。本系统采用32位微控制器STM32F103为核心，其外围使用16位的A／D和D／A转换电路。内部使用增量式PID控制算法，实现定电流、定电阻、定功率工作模式，并具有RS485通信功能。经测试，该直流电子负载运行平稳，响应速度快，准确度较高。具有一定的实用价值。可应用于蓄电池等出厂测试。

Design and realization of DC electronic load based on STM32

Due to its many advantages,Electronic load has replaced traditional load and widely used in testing session of power supply products.This system uses 32-bit microcontroller STM32F103 as the core.Its periphery uses 16-bit A/D and D/A conversion circuit,and interior uses incremental PID control algorithm to achieve constant current,constant resistance,constant power mode.Besides,this system has RS485 communication function.The testing of DC electronic load shows that this system runs smoothly,responses fast and has high accuracy.The technology and methods adopted in the system are of certain practical value and can be applied to battery factory test.