DC power supply is a common instrument in laboratory,in order to facilitate students to carry out experiments,a DC power supply based on FPGA pocket lab is designed.This system includes a pocket lab,a touch screen and a DC power supply module,SPOC technology and increment PID control are used to realize accurate voltage control.Based on Nios Ⅱ,uC/OS Ⅱ operat-ing system is built and uC/GUI graphics interface is transplanted.The experimental and test results show that the rotary encoder can adjust the voltage output of 0 V～23.7 V,step 50 mV,the output error is less than 1％,the maximum output current is 3 A,the max-imum output power is 18 W,it has the characteristics of compact size,high output precision and portability.
关键词
口袋实验室/直流可调电源/旋转编码器/SOPC/增量型PID/uC/GUI
Key words
pocket lab/DC power supply/rotary encoder/SOPC/increment PID control/uC/GUI
维普
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