关键词: 无刷风机控制器, 无位置传感器技术, 矢量控制

Abstract: Designs a sensorless brushless fan of controller, which uses a permanent magnet synchronous motor field-oriented control strategy, uses three-phase current sampling of the motor, performs sliding mode processing on the signal, estimates the real-time position of the motor rotor, and vectors the motor Control, mainly introduces the basic components of the controller, control strategy, starting method, analyzes the design circuit of each component module in detail, sets up a motor controller test platform, and conducts experimental tests on the function modules of the motor controller and the performance of the whole machine. The test results show that the controller can well meet the control requirements of the fan motor, and has the characteristics of smooth starting operation and strong overload capacity.

Key words: brushless fan controller, position sensorless technology, vector control