The Control of Constant Current Source in Electrostatic Precipitators Based on Microcontroller

Abstract

In order to improve the efficiency of electrostatic precipitators, a control system of constant current source based on Single Chip Microcomputer (SCM) is designed. In the control process, we use the pulse signal from microcontroller P1 port as digital signals of the switch. By changing the number of contact closure control, we achieve steady flow output of different magnitude. By using closed-loop feedback control, we achieve constant monitoring of dust concentration and ensure it compliance with outlet concentration of national requirements. The results show that microcontroller control system has a strong anti-interference, high accuracy, ease of programming, etc. Used in the electrostatic precipitator, collection efficiency can be further improved.

Design of CNC constant current source based on incremental PID control

“…The constant current source system adopts the STM32F103 single-chip microcomputer as the control unit and uses the advanced timer of the STM32 single-chip microcomputer to control the output of the PWM wave to control the output voltage [6]. The common STC89C51 single-chip microcomputer has insufficient peripheral functions, while the STM32 single-chip microcomputer has more abundant functions and more powerful peripheral functions.…”