摘要
本设计以STM32F103单片机为核心,利用单片机的数模转化模块DAC和OP07运算放大器模块将电压进行放大,并同时利用TIP122G达林顿管进行扩流、PID算法进行电压闭环控制,从而可以实现数控直流电压的步进输出,同时该系统也支持预设电压电流值和输出特定波形的需求。本系统主要包括变压器模块、辅助电源模块、运算放大器及扩流模块、偏置电压模块、电流采样模块。该系统可实现0~9.9 V电压步进输出、限流保护、输出特定波形的功能。
This design takes STM32F103 MCU as the core, and uses DAC and OP07 operational amplifier modules of MCU to amplify the voltage. At the same time, TIP122G Darlington tube is used for cur-rent expansion and PID algorithm for voltage closed-loop control, so as to realize the step output of NC DC voltage. The system also supports preset voltage-current values and the need to output specific waveforms. The system mainly includes transformer module, auxiliary power module, operational amplifier and current expansion module, bias voltage module, current sampling mod-ule. The system can realize the functions of 0~9.9 V voltage stepping output, current limiting pro-tection and specific waveform output.
出处
《软件工程与应用》
2021年第3期354-364,共11页
Software Engineering and Applications
