瑞萨R8c/25 应用文档，6步梯形波驱动无感BLDC，用反电动势-Renesas R8c/25 application document, Step 6 trapezoidal wave driving without a sense of BLDC, with the back-EMF

BLDC motor control is required to understand the motor rotor position and steering mechanism of rectifier. For the closed-loop speed control, there are two additional requirements, namely for the rotor speed \ / or motor current and PWM signals were