液压系统中流体脉动引发的振动和噪声沿管路传播，严重影响系统工作性能,缩短元件使用寿命。压力脉动幅值过大时会使管系疲劳破坏,共振状态下能使管系在短时间内破裂。液压脉动的抑制目前主要采用抗性滤波方法，频率选择性强、频带窄、结构庞大，无法满足实际需要。研究高效宽频、结构紧凑的液压脉动抑制方法与技术，有重要理论意义和工程应用价值。.项目以高压液压系统为应用对象，探索仿哺育动物耳蜗基底膜动力学特性、用机械谐振抑制流体脉动的新方法。主要研究"耳蜗基底膜'空间-频率'特性的物理模拟及结构实现"、"耳蜗基底膜仿生构件动力学建模与固有特性分析"、"含耳蜗基底膜仿生构件的液压滤波原理实现与结构制作"、"高压液压流场中'液体-构件'耦合振动分析与滤波器建模"、"液压滤波器动力学特性及滤波性能测试"等理论和技术问题，设计制造原创的滤波频带宽广、结构紧凑的机械谐振式液压滤波装置，为流体脉动抑制提供全新的技术手段。

The Vibration due to fluid pulsation in hydraulic systems transmits along hydraulic pipeline system, which would deteriorate the characteristics of the systems, and reduce service life of hydraulic elements. If the pulsation is too large, it maybe arouse the fatigue of pipelines. More seriously, if the pulsation resonates with pipeline system, the pipeline system will be destroyed abruptly. At present, the fluid pulsation of hydraulic systems is suppressed with reactive filtering methods, which have some disadvantges such as selectivity of filtering frequency, narrow frequency band, and bulkiness of structure. So, it is necessary to explore a new filrtering mechanism for suppression of fluid pulsation with high efficiency, wide frequency band, and cramped construction. .With high pressure hydraulic systems, the project will develop the suppression method which is based on biomimetic principle of mechanical characteristics of basilar membrane of mammalian cochlea. The project will chiefly carried on research of the following several aspects: .The "space-frequency" characteristics of basilar membrane are silmulated, and the basilar membrane is constructed with mechanical method..The mechanical features of basilar membrane are analyzed, and the dynamical model is established..The filtering mechanism of the filter with bionic basilar membrane is investigated, and the prototype is manufactured..Under high pressure flowfield, the coupled vibration of bionic basilar membrane is alanyzed and modelled..Filly, The dynamical feature of prototype is investigated experimentally, and the model is established by experiments.. The project will provide a new creative method for fluid pulsation suppression, which will improve the performance of the hydraulic systems effically.