High performance 250W Brushless DC Motor Driver Circuit for Ventilation System

The speed control of high speed must take into account whether the CLOCK resolution of the system is enough to grasp the time of processing software instructions. In addition, the data access mode of hall-sensor signal change also affects the processor efficiency and the correctness and real-time of judgment. As for the speed control of low speed, especially low speed starting, because the returned hall-sensor signal changes more slowly, how to capture the signal mode, processing time and properly configure the control parameter value according to the motor characteristics is very important.