Abstract
Motor as the main electromechanical energy conversion
device, its application has been throughout all areas of the
national economy and people's daily life. Both in industrial
and agricultural production, national defense, medical and
health, transportation and office equipment, or in the daily
life of household appliances and consumer electronics
products, extensive use of various motor. Motor speed
control using simulation method, the motor control
application more simple. The design and implementation
of simple controlling motor, also refers to the motor
starting, braking and reverse control.
The design introduced AT89C51 single-chip serial communication with
the PC method, as the single-chip input and output level is TTL level, and
PC-standard configuration is a RS232 serial interface, both the electrical
specifications are inconsistent, Therefore to complete PC-SCM and data
communications, the need for single-chip output TTL level to level
translators. Used in chip-level conversion for the MAX232. Applied to the
design of STC89C52 microprocessor and RS232 communication interface,
keyboard, 12864 LCD peripheral circuit, constitute a dc motor control
system online.
Applied to the design of PWM technology to realize the dc motor speed
regulation, and through a serial port realize PC online control. The online
speed regulation system, are turning, inversion, accelerate, slowing down,
stop and other functions, and can real-time display, keyboard Settings, it
has certain practical application value.
Keywords: single-chip serial communication Level Translators
Dc motor Online control PWM technology