| 摘要 |
PURPOSE: A movement active control system detects an eddy occurring on the rear surface of a vehicle and reduce the eddy. CONSTITUTION: A control system comprises an eddy pressure detector(100), a sound generator(400), a sound detector(500) and an electronic control unit(300). The eddy pressure detector(100) detects wake stream movement occurring on the rear surface of a vehicle and outputs wake stream movement signals. The sound generator(400) generates sound signals to reduce the wake stream movement. The sound detector(500) detects the level of the sound signal. The electronic control unit(300) outputs control signal to reduce the occurring wake stream movement to the sound generator(400) based on the car speed signal provided by a car speed sensor(200) and the wake stream signal provided by the eddy pressure detector(100) and compensates the control signal based on the level of the sound signal provided by the sound detector(500).
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