异步感应电机转速自适应控制系统

Adaptive Control System of Asynchronous Induction Motor Speed

摘要:

为解决传统电机转速控制系统存在的噪声控制不理想、电流电压采样精度低、故障检测不准确等问题,设计了异步感应电机转速自适应控制系统。选用DSP-LF2407为系统硬件主控制芯片,通过对功率主电路和功率驱动电路进行优化,加强硬件部分的噪声控制；接入高精度采样电阻,对电压信号进行RC滤波,依据FAULT管脚电平在系统故障时会被拉低的特点,提高系统软件电流电压采集和故障检测的精度。通过对硬件和软件部分进行优化,实现异步感应电机转速自适应控制系统的设计。实验结果表明,该系统噪声控制效果好、电流电压采用精度高、故障检测精度高。

Abstract:

In order to solve the problems of unsatisfactory noise control, low current and voltage sampling accuracy and inaccurate fault detection in the traditional motor speed control system, an adaptive speed control system of asynchronous induction motor is designed. DSP-LF2407 is used as the hardware of the system main control chip, through optimizing the power circuit and power driving circuit, strengthen the noise control of hardware access; high precision sampling resistance, RC filter was applied to voltage signal, according to the characteristics of FAULT pin level fault in the system will be pulled low, current and voltage acquisition and improve the system software the accuracy of fault detection. Through the optimization of hardware and software, the design of asynchronous induction motor speed adaptive control system is realized. The experimental results show that the system has good noise control effect, high accuracy of current and voltage and high accuracy of fault detection.