Sensorless brushless dc motor controller to control the knowledge, if you are not very understand, just take a look at the following article: brushless dc motor controller with high torque, high power density and other advantages. Compared with early have a dc motor controller, has higher reliability and longer service life. However, brushless dc electric excitation must synchronize with the rotor. So, you need to have one or more of the position sensor, is the hall sensor is usually used. But, the existence of the sensor, the influence of its service life, increase the cost of control, which limited the application field. So, if you can not use sensors, but can achieve the same drive, can greatly improve the performance of the brushless dc motor controller and reduce its cost control. So when someone without sensor control method is put forward. Internal integration of high-speed analog-to-digital conversion by the controller module detection of brushless dc motor controller rotates counter electromotive force, generated by the rotor and the electric field of communication, to achieve the effect of electric field and the rotor synchronous, turning drive motor controller. At the same time, using the independent DSP engine in the controller, the PID control of the speed fast, thus greatly improve the accuracy of control. How, after reading the above article, find their knowledge and enhance a lot, a lot of focus on our website, you will benefit more. Small make up: Candy
