FAN SPEED CONTROL METHOD
    3.
    发明申请
    FAN SPEED CONTROL METHOD 审中-公开
    风扇速度控制方法

    公开(公告)号:US20110133680A1

    公开(公告)日:2011-06-09

    申请号:US12633003

    申请日:2009-12-08

    IPC分类号: H02P1/04

    CPC分类号: H02P1/04

    摘要: The invention relates to a method of control fan speed in a fan speed control system having a cooling fan driven by a motor, a motor driver for driving the motor at a speed corresponding to a fan speed control signal, and an electronic control unit (ECU) for generating the fan speed control signal. The method includes generating a fan speed control signal and communicating the fan speed control signal to the motor driver so that the motor driver drives the motor at a speed corresponding to the fan speed control signal. If the fan speed control signal is at a level below a noisy fan speed range, then the ECU maintains the fan speed control signal below the noisy fan speed range until the ECU commands a fan speed above the noisy fan speed range. If the fan speed control signal is at a level above the noisy fan speed range, then the ECU maintains the fan speed control signal at a level above the noisy fan speed range until the ECU commands a fan speed below the noisy fan speed range. The method may also include generating a minimum fan speed control signal so that the motor driver drives the motor at a lowest speed that will allow the cooling fan to provide a desired cooling effect.

    摘要翻译: 本发明涉及一种风扇转速控制系统中控制风扇转速的方法,该风扇转速控制系统具有由电动机驱动的冷却风扇,以与风扇转速控制信号对应的速度驱动电动机的电动机驱动器以及电子控制单元 ),用于产生风扇速度控制信号。 该方法包括产生风扇速度控制信号并将风扇速度控制信号传送到电动机驱动器,使得电动机驱动器以对应于风扇速度控制信号的速度驱动电动机。 如果风扇转速控制信号处于低于噪声风扇转速范围的水平,则ECU将风扇转速控制信号保持在嘈杂风扇转速范围以下,直到ECU将风扇转速高于嘈杂的风扇转速范围。 如果风扇转速控制信号处于高于噪声风扇转速范围的水平,则ECU将风扇转速控制信号保持在高于嘈杂风扇转速范围的水平,直到ECU将风扇转速低于嘈杂的风扇转速范围。 该方法还可以包括产生最小风扇速度控制信号,使得电动机驱动器以最低速度驱动电动机,其将允许冷却风扇提供期望的冷却效果。