2010•Coal Mine MachineryRequires access

Designing of DC Motor PWM Regulating Speed System Controlled by Double Closed Loop Based on MSP430 Single Chip Microcomputer

Dong Yanfei

Abstract

Present MSP430F2619 which is a kind of ultra low powerloss 16-bit single chip microcomputer.Design a DC Motor PWM regulating speed system.The feedback speed is formed by measuring speed motor and the current feedback is gotten by LEM.The digital controlling method of speed and current is actuated by MSP430.The PWM wave generated by MSP430 timer,which is amplified by driving chip,control the DC motor voltage to regulate the speed.The experiment verifies that the controlling system can regulate speed smoothly and can be designed easily.

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Key concepts: Pulse-width modulation, Microcomputer, Timer, DC motor, Electronic speed control, Voltage, Computer science, Chip