Research And Design On Digital PWM Pulse Width Speed Control Experimentai System Of DC Motor Based On EL-dS-Ⅲ Bench And TMS320F2812

This topic is in Beijing Precision Instrument Da Sheng Technology Co., Ltd. EL-DS-III electrical control integrated experimental stage, based on the analog separation devices and application-specific integrated chip constitutes controller DC motor PWM pulse width speed control system based oncombined with this system design principles and keep the main power circuit, converter circuit and the control circuit and the implementing agencies, the best measurement and control applications, Texas Instruments Inc.(TI) introduced fixed-point digital signal processor (DSP) TMS320F2000series TMS320F2812control processor core instead of EL-DS-traditional analog controller circuit of the type III test bed, designed a DC motor speed and current double closed-loop digital PWM pulse width control experimental system, speed setting, speed measurement display and detectionconversion, the armature circuit current measurement display conversion, and the motor and detecting the digitized optimum control (including the motor is positively rotated, the forward rotation of the brake, and reverse rotation, the reverse rotation brake, and the forward rotational acceleration, the reverse rotation accelerationforward rotation of the deceleration, the reverse rotation of deceleration). This paper introduces the EL-DS-III experiment station DC motors traditional analog controller works its drawbacks and defects, focuses on the use of PWM pulse width speed digital signal processor (DSP)-based instead of traditional analog controller and speed, current dual closed-loop digital PI regulator technology to achieve digital controller DC motor, DC motor digital multifunction control experimental system provides an effective way for achieving high performance.