Curve Fitting Method, Apparatus and Device Based on A Drawing Tool

    公开(公告)号:US20230066024A1

    公开(公告)日:2023-03-02

    申请号:US17897120

    申请日:2022-08-26

    IPC分类号: G06F30/12

    摘要: A curve fitting method, apparatus and device based on a drawing tool for improving the accuracy of curve fitting. The method includes: determining a fitting area containing the original curve, in the fitting area, performing at least one sub-fitting operation on the original curve until the end condition of the curve fitting is satisfied, and generating a fitting curve corresponding to the original curve based on the fitting curve corresponding to each sub-fitting operation. This method can fit the original curve segments in the fitting area, which improves the accuracy of the obtained fitting curve.

    SOUND ABSORBER UNIT AND WHEEL WITH SOUND ABSORBER DEVICE

    公开(公告)号:US20220144014A1

    公开(公告)日:2022-05-12

    申请号:US17170861

    申请日:2021-02-08

    IPC分类号: B60B21/12 G10K11/172

    摘要: The present application relates to a sound absorber unit and a vehicle wheel having a sound absorber comprising at least one sound absorber unit or at least one sound absorber module which is composed of a plurality of sound absorber units as a whole. The sound absorber unit is constructed into a box body in a hexahedron shape, a three-layer Helmholtz resonance sound absorption structure with double holes and single holes combined is formed, and meanwhile, the sound absorber unit or the sound absorber assembly forms a structural resonance sound absorber. According to the application, the double-absorption wheel air chamber sound resonance function organically combining Helmholtz resonance sound absorption and structural resonance sound absorption can be realized.

    Hub Image Retrieval Method and Device

    公开(公告)号:US20230060298A1

    公开(公告)日:2023-03-02

    申请号:US17897121

    申请日:2022-08-26

    摘要: A hub image retrieval method and a device thereof for improving the retrieval accuracy of an image containing a hub. The method includes: performing feature extraction on a hub image to be processed containing a target hub, and obtaining a hub feature to be processed containing N sub-hub features, wherein the N sub-hub features at least include information characterizing the features of a hub window of the target hub; determining similarities between candidate hub features of each candidate hub image and the hub features to be processed; and selecting a candidate hub image matching the hub image to be processed from the plurality of candidate hub images based on the determined respective similarities.

    NON-PNEUMATIC TIRE
    6.
    发明申请

    公开(公告)号:US20220355620A1

    公开(公告)日:2022-11-10

    申请号:US17410715

    申请日:2021-08-24

    IPC分类号: B60C7/14 B60B9/26 B60B9/04

    摘要: The invention discloses a non-pneumatic tire, comprising a wheel hub; an annular belt located on the periphery of the wheel hub; spokes comprising a plurality of spokes circumferentially arranged between the annular belt and the wheel hub; each spoke being V-shaped, and the spoke comprising two inclined plates arranged at an angle and an arc-shaped apex corner area formed at the joint of the two inclined plates; a resistance part for limiting the deformation amount of the apex corner area to a deformation amount corresponding to the yield strength. According to the invention, plastic permanent deformation of spokes can be effectively avoided by adding resistance parts, and further the service life of non-pneumatic tires can be prolonged.

    WHEEL WITH A SOUND ABSORBING DEVICE

    公开(公告)号:US20220148553A1

    公开(公告)日:2022-05-12

    申请号:US17170828

    申请日:2021-02-08

    摘要: The application relates to a wheel with a sound absorption device, wherein the sound absorption device is arranged in a wheel air chamber to reduce acoustic resonance, the sound absorption device comprises two resonance sound absorption structure units which are connected in parallel, a first sound absorption frequency band of a first resonance sound absorption structure unit and a second sound absorption frequency band of a second resonance sound absorption structure unit are adjacent to each other or partially overlap with each other, and the resonance frequency of the wheel air chamber is contained at the adjacent part of the first sound absorption frequency band and the second sound absorption frequency band or in the overlapping area of the first sound absorption frequency band and the second sound absorption frequency band.