用单片机控制的电机沟通调速系统设计摘 要单片机控制的变频调速系统设计思想是用转差频率进行控制。通过改变程序来达到控制转速的目的。由于设计中电动机功率不大，所以整流器采纳不可控电路，电容器滤波；逆变器采纳电力晶体管三相逆变器。系统的总体结构主要由主回路，驱动电路，光电隔离电路，HEF4752 大规模集成电路，保护电路，Intel 系列单片机，Intel8253 定时/记数器，Intel8255 可编程接口芯片，Intel8279 通用键盘/显示器，I/O 接口芯片，CD4527 比例分频器和测速发电机等组成。回路中有了检测保护电路就可以使整个系统运行的可靠性有了保障。非传统的 CMOS 变革了存储器技术。直到现在，我们仍然依靠 DRAM 作为主要的存储体。不幸的是，随着芯片的缩小，只有芯片外围速度上的增长——处理器芯片和它相关的缓存速度每两年增加一倍。这就是存储器代沟并且是人们焦虑的根源。存储技术的一个可能突破是，使用一种非传统的 CMOS 管，在计算机整体性能上将导致一个很大的进步，将解决大存储器的需求，即缓存不能解决的问题。关键词:MCS-51 单片机；HEF4752；8253 定时器；晶闸管；整流器 Exchange the speed of adjusting to design systematically with the electrical machinery that the one-chip computer controlsABSTRACTFrequency conversion that one-chip computer control transfer speed systematic design philosophy with transfer to difference frequency control. Achieve the goal of controlling rotational speed through changing the procedure . Because the motor is not big in power in the design, the rectifier can not adopt controlledly the circuit, the condenser strains waves; Going against the becoming device adopts three phases of the electric transistor to go against the becoming device. The systematic ensemble architecture is by the main return circuit mainly, drive the circuit, the photo electricity isolates the circuit, HEF4752 large scale integrated circuit, protects the circuit, the Intel series one-chip computer, Intel8253 timing /count device of,Intel8255 programmable interface chip,Intel8279 keybo...
