This paper is mainly talk about DC speed regulation. Presents a double closed loops DC PWM regulating speed system by using AT89S8252 single chip processor.
This paper researches reversible DC-PWM timing system with a dual-converter and dual-closed-loop. Beginning with the theory of the DC timing system, this article has build up the maths model of the reversible DC-PWM timing system with a dual-converter and dual-closed-loop, discussing a new control method that combines single-chip computer with DC-drive. Which includes the discussion of hardware and software, control policy and algorithm, ect .
This scheme is based on the core of AT89S8252 single chip, using the chips of IR2103/ADC0809/HD7279A and some peripheral circuits. By real time testing and adjusting the motor’s velocity/current, this timing system can get quick and exact timing result.
Key words: Single-chip computer; DC electromotor; Speed Control; PWM