微型机与应用
微型機與應用
미형궤여응용
Microcomputer & its Applications
2015年
21期
24-26
,共3页
电磁搅拌%变频电源%SA4828%SPWM
電磁攪拌%變頻電源%SA4828%SPWM
전자교반%변빈전원%SA4828%SPWM
electromagnetic stirring%variable frequency power source%SA4828%SPWM
设计了一种智能型电磁搅拌电源的控制系统，基于 LPC2368和 SA4828的组合，突破了纯硬件和纯软件设计的瓶颈。 ARM 主控制器完成通信、显示、PI 计算等事务性功能， SA4828在 ARM的驱动信号下发出6路幅值、频率可调的 SPWM 波，实现了高精度配置灵活的三相变频电源。采用数字增量式PI 控制策略，快速消除外界扰动对输出的影响。采用模块化的程序设计，便于根据工况加入新的模块，同时系统注重可靠性设计，适用于工业现场。
設計瞭一種智能型電磁攪拌電源的控製繫統，基于 LPC2368和 SA4828的組閤，突破瞭純硬件和純軟件設計的瓶頸。 ARM 主控製器完成通信、顯示、PI 計算等事務性功能， SA4828在 ARM的驅動信號下髮齣6路幅值、頻率可調的 SPWM 波，實現瞭高精度配置靈活的三相變頻電源。採用數字增量式PI 控製策略，快速消除外界擾動對輸齣的影響。採用模塊化的程序設計，便于根據工況加入新的模塊，同時繫統註重可靠性設計，適用于工業現場。
설계료일충지능형전자교반전원적공제계통，기우 LPC2368화 SA4828적조합，돌파료순경건화순연건설계적병경。 ARM 주공제기완성통신、현시、PI 계산등사무성공능， SA4828재 ARM적구동신호하발출6로폭치、빈솔가조적 SPWM 파，실현료고정도배치령활적삼상변빈전원。채용수자증량식PI 공제책략，쾌속소제외계우동대수출적영향。채용모괴화적정서설계，편우근거공황가입신적모괴，동시계통주중가고성설계，괄용우공업현장。
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.
