The Design of Direct Current Motor speed Regulation System Based On
SCM
Chenli
School of Information and Engineering
Abstract
This article mainly introduces the method to generate the PWM signal by using MCS-51
single-chip computer to control the speed of a D.C. motor. It also clarifies the principles of PWM
and the way to adjust the duty cycle of PWM signal. In addition, IR2110 has been used as an
actuating device of the power amplifier circuit which controls the speed of rotation of D.C. motor.
What’s more, tachogenerator is used in this system to measure the speed of D.C. motor. The result
of the measurement is sent to A/D converter after passing the filtering circuit, and finally the
feedback single is stored in the single-chip computer and participates in a PI calculation. As for
the software, this article introduces in detail the idea of the programming and how to make it.
Key words: PWM signal,tachogenerator,PI calculation
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