The invention discloses an automobile active
noise reduction
system and method. The automobile active
noise reduction method comprises error microphones, a rotating speed acquisition device and a
noise reduction controller. The error microphones are connected with the
noise reduction controller and are used for collecting noise signals and outputting the noise signals to the
noise reduction controller. The rotate speed acquisition device and the
noise reduction controller are used for acquiring rotating speed signals of an engine and outputting the rotating speed signals to the noise reductioncontroller. The noise reduction controller is used for performing active noise reduction
simulation according to the noise signals, the rotating speed signals of the engine,
reference noise data of acorresponding
vehicle type and an established
transfer function,
optimal control parameters are determined, and active noise reduction is performed based on the
optimal control parameters. The automobile active noise reduction
system and method can control the order noise of the engine, and can freely adjust a
control area in a vehicle according to the number and position of installed error microphones. The automobile active noise reduction
system and method can be conveniently and quickly additionally installed into the vehicle needing active noise reduction, the cost is low, the operation is simple, and drivers and passengers can obtain better driving experience.