摘要：

The Brushless DC (BLDC) variable-speed drive is widely used because of its particularly high mechanical power density, simplicity, and cost effectiveness. A software rotor position generation has been implemented on the DSP Controller family, thus saving the mechanical position sensor cost. Based on the non-fed phase back electromotive force measurement, this software-computed rotor position is fully integrated and able to adapt itself to any BLDC drive-inherent problem. This application report presents successively the sensorless principle theoretical background, the implementation of the rotor position determination, the BLDC drive imperfection handling the operating system, and every necessary experimental result, thus leading to an adaptable simple and cost-effective drive.

文档：spra498.pdf

链接：http://www.ti.com.cn/general/cn/docs/litabsmultiplefilelist.tsp?literatureNumber=spra498