公开(公告)号：US20200211527A1

公开(公告)日：2020-07-02

申请号：US16731376

申请日：2019-12-31

Applicant: The Hong Kong University of Science and Technology ,  Hong Kong Baptist University

Inventor： Ping SHENG ,  Zhen DONG ,  Xiaonan ZHANG ,  Jie PAN ,  Ho Yiu MAK ,  Guancong MA

IPC: G10K11/178 ,  H04R1/40 ,  H04R3/12

Abstract: An active sound barrier has at least one passive sound absorber at or near a boundary location. A microphone provides an output to a frequency division module, in which a plural of frequencies are filtered to provide outputs corresponding to frequency segments of the receiving transducer output at respective ones of the frequencies. An active driving circuit drives plural speakers or output transducers at respective ones of the frequencies, with at least a subset of the speakers or output transducers at or close to the barrier. The speakers or output transducers cooperate with the passive sound absorber to reduce noise across a wide frequency band as well as to effect an electrically switchable soft boundary.

公开(公告)号：US20160369202A1

公开(公告)日：2016-12-22

申请号：US15121492

申请日：2015-03-31

Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ping SHENG ,  Bing ZHANG ,  Xiaolin LI ,  Shuyu CHEN ,  Weijia WEN

IPC: C10M171/00 ,  C10M173/02

CPC classification number: C10M171/001 ,  C10M173/02 ,  C10M2201/02 ,  C10M2227/003 ,  C10M2229/025 ,  C10N2270/00 ,  F16D2037/001

Abstract: An apparatus for generating a giant electrorheological (ER) effect includes an upper high voltage electrode and a lower high voltage electrode, the upper high voltage electrode and the lower high voltage electrode each covered with a water-absorbing material and have water absorbed thereon. The apparatus also includes a fluid channel formed by layers and positioned in a gap between the upper high voltage electrode and the lower high voltage electrode; a pressure sensor positioned at one of the high voltage electrodes; a pump to flow silicon oil through the fluid channel; and a high voltage source configured to apply a voltage to the upper high voltage electrode. A method for generating a ER utilizes the apparatus.

Abstract translation: 用于产生巨大电流变（ER）效应的装置包括上部高压电极和下部高压电极，上部高压电极和下部高压电极各自被吸水材料覆盖并吸收水。 该装置还包括由层构成并定位在上部高压电极和下部高压电极之间的间隙中的流体通道; 位于所述高压电极之一处的压力传感器; 使硅油流过流体通道的泵; 以及配置为向上部高压电极施加电压的高电压源。 用于产生ER的方法利用该装置。