摘要
Abstract
An intelligent control system for electromagnetic stirring power supply is designed. Based on LPC2368 and SA4828 , the system broke the bottlenecks of the pure hardware and pure software design. ARM master controller completes communication , display, PI calculation and other transactional functions, and SA4828 generates six SPWM waves whose amplitudes and frequencies can be adjusted under the the driving signal of ARM. Based on this, the three-phase inverter with high accuracy is achieved. The effect of external disturbance on the output is quickly eliminated by using the digital incremental PI control strategy. Using the modular programming, it can be easily to join the new module according to the working conditions. At the same time, the system pays attention to the reliability design and is suitable for the industrial scene.关键词
电磁搅拌/变频电源/SA4828/SPWMKey words
electromagnetic stirring/variable frequency power source/SA4828/SPWM分类
电子信息工程
