汽车车内噪声主动控制系统仿真

Simulation of Automobile Interior Noise Active Control System[JZ)][HS)]

摘要:

降低汽车空腔的振动,是抑制汽车车内噪声的有效途径之一;以激振器、作动器和控制器等为主要部件,搭建了简化的汽车车内噪声主动控制系统,该系统通过将汽车空腔模型简化为板件,以减弱板件振动为目标,实现了汽车车内噪声主动控制;采用简谐正弦及余弦信号作为激振器发出的激励,用于模拟板件的初始振动,控制器通过采用模糊控制算法直接控制压电陶瓷作动器的振动,压电陶瓷作动器的振动用于抑制板件的振动,完成了汽车车内噪声主动控制系统仿真;仿真结果表明,研究采用的汽车车内噪声主动控制系统,使汽车空腔振动降低23%,为解决由汽车发动机和动力总成的振动所引发的汽车车内噪声问题提供了一个有效途径。

Abstract:

Reducing the vibration of the automobile cavity is one of the effective ways to eliminate automobile interior noise. This paper set up a simplified automobile interior noise active control system with vibration exciter, actuator and controller as the main components, and the system simplify the automobile cavity model for plate to weaken vibration plate as the goal, then achieve automobile interior noise active control. Using simple harmonic sine and cosine signal as incentives from the vibrator, which is used for simulateing initial vibration of plate. Controller by using fuzzy control algorithm directly controls the vibration of the piezoelectric ceramic actuators, the vibration of the piezoelectric ceramic actuators is used for eliminating the vibration of the plate, accordingly, completed the simulation of the automobile interior noise active control system. Simulation results show that the automobile interior noise active control system adopted in this paper made automobile cavity vibration reduced by 23%, to solve the problem of the automobile interior noise caused by automobile engine and powertrain vibration provides an effective method.