摘要
针对无刷直流电机(BLDC)驱动器的电流控制问题,提出了一种改进的基于单周控制的低成本转子位置估算方法。该估算方法以真实反电势过零点的检测为依据,这些真实反电势过零点可直接通过检测相端和直流环节中点之间的电压来提取,无需电机中性点电压。电流控制系统通过一种低成本的通用自动电压调整微控制器(Atmega8)来实现。MATLAB仿真和实验测试结果均显示相比传统的滞环控制器方法,改进后的PWM(脉冲宽度调制)无刷直流电机电流控制系统在稳态和瞬态两种情况下表现出更好的性能。
According to the current brushless DC motor drive control problem,a low cost improved method to esti-mate the rotor position based on one cycle control is presented. The estimation method is based on real back EMF zero crossing detection. The back EMF zero crossing detection can be extracted directly through the voltage between phase end and the DC link midpoint without the motor neutral point voltage. The current control system can be achieved by the general automatic voltage regulation of a kind of low cost microcontroller（Atmega8）. MATLAB simulation and practical test results showed that compared it with the traditional Hysteresis controller method,the improved PWM（Pulse Width Modulation）brushless DC motor control system exhibited better performance in two cases of the steady state and the transient current.
出处
《电子器件》
CAS
北大核心
2016年第1期118-123,共6页
Chinese Journal of Electron Devices
基金
2013年度广西高校科学技术研究项目(2013YB296)
