The invention provides a road noise semi-active control system based on a magneto-rheological bushing. The system comprises: an acceleration sensor which is installed at a position close to a wheel hub, and is used for obtaining an excitation signal generated by the contact between a road surface and a tire; a microphone used for acquiring a noise signal in the vehicle; a control unit used for receiving the excitation signal acquired by the acceleration sensor and the noise signal acquired by the microphone and synchronously intercepting 0-300Hz frequency parts of the excitation signal and the noise signal; and a magneto-rheological bushing and a bushing controller which are installed at the coupling point of the passenger compartment and the chassis, wherein the bushing controller is used for receiving the control signal sent by the control unit and controlling the characteristics of the magneto-rheological bushing. Road noise transmitted by a 0-300Hz noise structure is reduced and suppressed, the control unit sends a signal to the bushing controller to control the magneto-rheological bushing to keep different rigidity and damping characteristics, then the road noise transmitted by the structure is reduced, and riding comfort in the vehicle is ensured.

    本发明提出了一种基于磁流变衬套的路噪半主动控制系统,包括加速度传感器,安装在靠近轮毂位置,用以获取路面与轮胎接触产生的激励信号;麦克风,用以获取车内的噪声信号;控制单元,用以接收加速度传感器获取的激励信号和麦克风获取的噪声信号,并同步截取激励信号和噪声信号的0‑300Hz的频率部分;磁流变衬套和衬套控制器安装在乘员舱与底盘耦合点处,衬套控制器,用以接收控制单元发送的控制信号,控制磁流变衬套的特性。本发明针对0‑300Hz噪声的结构传递的路噪进行消减和抑制,通过控制单元发送信号给衬套控制器来控制磁流变衬套保持不同的刚度和阻尼特性,进而降低通过结构传递的路噪,确保车内乘坐的舒适性。


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    Titel :

    Road noise semi-active control system based on magneto-rheological bushing


    Weitere Titelangaben:

    一种基于磁流变衬套的路噪半主动控制系统


    Beteiligte:
    SONG HAISHENG (Autor:in) / YANG ZHIGANG (Autor:in) / LU FAN (Autor:in) / WANG ZHIWEI (Autor:in)

    Erscheinungsdatum :

    2021-04-13


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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