Semiconductor photodiode functioning in a wide band range and obtaining method thereof

    公开(公告)号:US11764323B2

    公开(公告)日:2023-09-19

    申请号:US17416538

    申请日:2019-10-25

    摘要: A semiconductor photodiode which functions in a wide band range up to medium wave infrared and far wavelengths in addition to visible region and near infrared includes: a light absorber region in micro structure which can provide light absorbance upon being roughened by laser; a first electrical lower contact coated with metal materials such as aluminium (Al), silver (Ag); a silicon which consists of crystalline silicon (c-Si); a second electrical lower contact which is coated with metal materials such as aluminium (Al), silver (Ag); a chalcogen doped hyper-filled silicone region which is obtained as a result of doping by pulse laser to the silicone region implanted by chalcogen elements; and upper electrical contact parts which are coated generally in the thickness range of 10 nm-1000 nm by using two-layered alloys with aluminium (Al)—(Al)-silver (Ag), two-layered alloys with titanium (Ti)-gold (Au), three-layered alloys with Ti-Platinum(Pt)—Au—Ag or three-layered alloys with Ti-lead(Pb)—Ag.

    SPHERICALLY STEERABLE VECTOR DIFFERENTIAL MICROPHONE ARRAYS

    公开(公告)号:US20220337944A1

    公开(公告)日:2022-10-20

    申请号:US17638211

    申请日:2020-08-28

    IPC分类号: H04R1/40 H04R3/00

    摘要: A spherically steerable microphone array structure is provided. The spherically steerable microphone array structure uses pressure and acoustic particle velocity signals obtained from sensors positioned co-planarly on a circular arc. The spherically steerable microphone array structure allows a calculation of all spatial partial derivatives of a sound field up to a given order. The spatial partial derivatives are used to obtain a spherical harmonic decomposition of a recorded sound field. Spherical harmonic decomposition coefficients are used in a spherically direction-invariant acoustic mode beamforming.

    Method of reducing estimation vectors in a model predictive control of alternating current motors

    公开(公告)号:US11451174B2

    公开(公告)日:2022-09-20

    申请号:US17272676

    申请日:2019-10-02

    IPC分类号: H02P21/00 H02P21/14 H02P27/06

    摘要: A method for reducing a total operational load of a method of a model predictive control-by conducting simplifications based on specific observations, in order to drive alternating current motors by using the method of the MPC with a two-level voltage source inverter. The method includes the steps of determining at which one of the predefined sectors a resultant of stator currents is present, determining a motor mode, reducing seven estimation vectors to four estimation vectors and calculating a cost function or reducing seven estimation vectors to five estimation vectors and calculating the cost function.

    METHOD OF REDUCING ESTIMATION VECTORS IN A MODEL PREDICTIVE CONTROL OF ALTERNATING CURRENT MOTORS

    公开(公告)号:US20210344292A1

    公开(公告)日:2021-11-04

    申请号:US17272676

    申请日:2019-10-02

    IPC分类号: H02P21/00 H02P21/14 H02P27/06

    摘要: A method for reducing a total operational load of a method of a model predictive control-by conducting simplifications based on specific observations, in order to drive alternating current motors by using the method of the MPC with a two-level voltage source inverter. The method includes the steps of determining at which one of the predefined sectors a resultant of stator currents is present, determining a motor mode, reducing seven estimation vectors to four estimation vectors and calculating a cost function or reducing seven estimation vectors to five estimation vectors and calculating the cost function.