公开(公告)号：US20220317228A1

公开(公告)日：2022-10-06

申请号：US17842727

申请日：2022-06-16

Applicant: XI'AN UNIVERSITY OF TECHNOLOGY

Inventor： Xiaoli XI ,  Zhenzhu ZHAO ,  Jiangfan LIU ,  Jinsheng ZHANG ,  Yanning YUAN ,  Jiuxiang GAO ,  Chaofan TUO

IPC: G01S1/24 ,  G01S1/22

Abstract: Provided herein is a method for separating Loran sky and ground waves based on a Levenberg-Marquart algorithm, including: (1) collecting a plurality of Loran sky-ground wave signals followed by normalization to obtain a normalized signal; (2) preprocessing the normalized signal by inverse Fourier transform method to obtain an initialization parameter; (3) establishing a mathematical model for the Loran sky-ground wave signals in time domain; and (4) solving parameters of the mathematical model using the Levenberg-Marquart algorithm to separate the Loran sky and ground waves.

公开(公告)号：US11336492B2

公开(公告)日：2022-05-17

申请号：US16476879

申请日：2019-04-28

Applicant: Xi'an University of Technology

Inventor： Haipeng Ren ,  Junliang Yao ,  Chao Bai

IPC: H04L27/00

Abstract: a chaotic shape-forming and corresponding matched filter-based wireless communication method is provided, and the method includes that: 1) data to be transmitted is prepared; 2) chaotic shape-forming filter is performed on a digital symbol to be transmitted to generate a baseband signal; 3) the baseband signal is transmitted and transferred by use of a radio frequency component and transmitting antenna of a conventional wireless communication system; 4) a wireless signal is received by use of a conventional receiving antenna, and down-carrier process is performed on the received signal to obtain a received baseband signal; 5) matched filter is performed on the received baseband signal; 6) wireless channel estimation and multipath interference cancellation judgment threshold calculation are performed; and 7) sampling judgment is performed on an output signal of matched filter, symbol sampling is performed on the output signal of the matched filter in Step 5), and the sampled signal is judged by use of a judgment threshold calculated in Step 6) to obtain a decoded output signal.

公开(公告)号：US20200070418A1

公开(公告)日：2020-03-05

申请号：US16669602

申请日：2019-10-31

Applicant: Xi'an University of Technology

Inventor： Gengxiang WANG ,  Pengfei LI ,  Kaihe WEI

IPC: B29C64/245 ,  B29C64/209 ,  B29C64/227

Abstract: A variable-size fully-automatic 3D printing system based on a cylindrical coordinate system includes a base provided with a retractable work platform; the base is provided with a vertical support side plate on a side thereof; an upper end of the support side plate is connected to a top plate, and the top plate is located directly above the base; a lower side of the top plate is connected to a sleeve via a column seat; a lower end of the sleeve is provided with a protrusion; a lower end of the protrusion is connected with a cross beam; a lower side of the cross beam is provided with a ball screw a, one end of the ball screw a is connected to a power end of a first servo motor disposed at an outer end of the cross beam.

公开(公告)号：US20180254727A1

公开(公告)日：2018-09-06

申请号：US15756810

申请日：2016-02-04

Applicant: XI'AN UNIVERSITY OF TECHNOLOGY

Inventor： Hai-Peng REN

IPC: H02P21/00

CPC classification number: H02P21/001 ,  H02P21/00 ,  H02P21/50 ,  H02P27/08

Abstract: A method of realizing single direction chaotic rotation speed of permanent magnet synchronous motor is provided powered by a three-phase full-bridge inverter.

公开(公告)号：US09543462B2

公开(公告)日：2017-01-10

申请号：US15074512

申请日：2016-03-18

Applicant: Xi'an University of Technology ,  THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Xinmei Wang ,  Sudip K. Mazumder ,  Wei Shi

IPC: H01L31/0352 ,  H01L31/119 ,  H01L27/144 ,  H01L23/482

CPC classification number: H01L31/119 ,  H01L23/4825 ,  H01L27/1443 ,  H01L31/035281 ,  Y02E10/50

Abstract: This present invention provides a novel photoconductive semiconductor switch (PCSS) comprising: a semi-insulating substrate, an anode formed on the upper surface of said semi-insulating substrate, a first n-type doped layer formed on the lower surface of said semi-insulating substrate, a p-type doped layer formed on said first n-type doped layer, a second n-type doped layer formed on said p-type doped layer, a cathode formed on said second n-type doped layer, several recesses facing towards said first n-type doped layer and vertically extending into a part of said first n-type doped layer, an insulating layer formed on said second n-type doped layer and on the walls and the bottoms of said recesses, a gate electrode consisting of two parts, one part of the which formed on said insulating layer on the walls and the bottoms of recesses, and the other part of the which formed on a part of the insulating layer on the second n-type doped layer for electrically connecting the part of the gate electrode on the recesses, wherein the cathode and the gate electrode are electrically isolated.

Abstract translation: 本发明提供了一种新型的光导半导体开关（PCSS），其包括：半绝缘基板，形成在所述半绝缘基板的上表面上的阳极，形成在所述半绝缘基板的下表面上的第一n型掺杂层， 绝缘衬底，形成在所述第一n型掺杂层上的p型掺杂层，形成在所述p型掺杂层上的第二n型掺杂层，形成在所述第二n型掺杂层上的阴极， 朝向所述第一n型掺杂层并且垂直延伸到所述第一n型掺杂层的一部分中的绝缘层，形成在所述第二n型掺杂层上以及所述凹部的壁和底部上的绝缘层， 的两部分，其一部分形成在所述绝缘层上的壁和凹部的底部上，而另一部分形成在第二n型掺杂层上的绝缘层的一部分上，用于电连接 一部分gat e电极，其中阴极和栅电极是电隔离的。

公开(公告)号：US20160276518A1

公开(公告)日：2016-09-22

申请号：US15074512

申请日：2016-03-18

Applicant: Xi'an University of Technology ,  THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Xinmei WANG ,  Sudip K. MAZUMDER ,  Wei SHI

IPC: H01L31/119

CPC classification number: H01L31/119 ,  H01L23/4825 ,  H01L27/1443 ,  H01L31/035281 ,  Y02E10/50

Abstract: This present invention provides a novel photoconductive semiconductor switch (PCSS) comprising: a semi-insulating substrate, an anode formed on the upper surface of said semi-insulating substrate, a first n-type doped layer formed on the lower surface of said semi-insulating substrate, a p-type doped layer formed on said first n-type doped layer, a second n-type doped layer formed on said p-type doped layer, a cathode formed on said second n-type doped layer, several recesses facing towards said first n-type doped layer and vertically extending into a part of said first n-type doped layer, an insulating layer formed on said second n-type doped layer and on the walls and the bottoms of said recesses, a gate electrode consisting of two parts, one part of the which formed on said insulating layer on the walls and the bottoms of recesses, and the other part of the which formed on a part of the insulating layer on the second n-type doped layer for electrically connecting the part of the gate electrode on the recesses, wherein the cathode and the gate electrode are electrically isolated.

Abstract translation: 本发明提供了一种新型的光导半导体开关（PCSS），其包括：半绝缘基板，形成在所述半绝缘基板的上表面上的阳极，形成在所述半绝缘基板的下表面上的第一n型掺杂层， 绝缘衬底，形成在所述第一n型掺杂层上的p型掺杂层，形成在所述p型掺杂层上的第二n型掺杂层，形成在所述第二n型掺杂层上的阴极， 朝向所述第一n型掺杂层并且垂直延伸到所述第一n型掺杂层的一部分中的绝缘层，形成在所述第二n型掺杂层上以及所述凹部的壁和底部上的绝缘层， 的两部分，其一部分形成在所述绝缘层上的壁和凹部的底部上，而另一部分形成在第二n型掺杂层上的绝缘层的一部分上，用于电连接 一部分gat e电极，其中阴极和栅电极是电隔离的。

公开(公告)号：US09168625B2

公开(公告)日：2015-10-27

申请号：US13820975

申请日：2011-09-08

Applicant: Yumei Huang ,  Wen Yan ,  Feng Gao ,  Hao Jiang

Inventor： Yumei Huang ,  Wen Yan ,  Feng Gao ,  Hao Jiang

IPC: B24B1/04 ,  B24B37/08 ,  B24B7/17 ,  B24B41/06

CPC classification number: B24B1/04 ,  B24B7/17 ,  B24B37/08 ,  B24B41/067

Abstract: A computer numerical control machine tool for grinding two sides of a plane by shifting self-rotation ultrasonic vibration, wherein a pillar (3) is provided on the tool body (1) of the machine tool, a Y axis movement assembly (12) is provided on the platform of the tool body (1), with a lower revolving movement assembly (11), which revolves about a Z coordinate axis, being mounted on the upper surface of the Y axis movement assembly (12), and a lower grinding plate (10) being mounted coaxially above the lower revolving movement assembly (11); an ultrasonic vibration assembly (2) is mounted fixedly on the pillar (3), with a separation plate (8) for clamping a workpiece assembly (9) being provided on the ultrasonic vibration assembly (2); an X axis movement assembly (4) is mounted on the upper part of the pillar (3), a Z axis movement assembly (5) is mounted on the upright face of the X axis movement assembly (4), with an upper revolving movement assembly (6), which revolves about the Z coordinate axis, being provided on the Z axis movement assembly (5), and an upper grinding plate (7) being mounted coaxially on the revolving axis of the upper revolving movement assembly (6). The present invention enhances the time variation of grinding movement tracks, the uniformity of grinding speed distribution, machining efficiency and machining precision.

Abstract translation: 一种用于通过移动自旋超声波振动来研磨平面的两侧的计算机数字控制机床，其中在机床的工具主体（1）上设置有支柱（3），Y轴运动组件（12）是 设置在工具主体（1）的平台上，具有安装在Y轴运动组件（12）的上表面上的围绕Z坐标轴转动的下旋转运动组件（11），以及下磨 板（10）同轴地安装在下旋转运动组件（11）的上方; 超声波振动组件（2）固定地安装在支柱（3）上，具有用于夹紧设置在超声波振动组件（2）上的工件组件（9）的分隔板（8）。 X轴运动组件（4）安装在支柱（3）的上部，Z轴运动组件（5）安装在X轴运动组件（4）的直立面上，上运动组件 围绕Z坐标轴旋转的组件（6）设置在Z轴移动组件（5）上，以及同轴地安装在上部旋转运动组件（6）的旋转轴上的上部研磨板（7）。 本发明增加了研磨运动轨迹的时间变化，磨削速度分布的均匀性，加工效率和加工精度。

公开(公告)号：US09121799B2

公开(公告)日：2015-09-01

申请号：US13811257

申请日：2011-08-04

Applicant: Yumei Huang ,  Xingang Yang ,  Ye Hui ,  Rui Zhao

Inventor： Yumei Huang ,  Xingang Yang ,  Ye Hui ,  Rui Zhao

IPC: G01N3/40 ,  G01M99/00 ,  B23Q17/00

CPC classification number: G01N3/40 ,  B23Q17/00 ,  B23Q2230/002 ,  G01M99/007

Abstract: Disclosed is an operating position changeable loading apparatus with multi-axis joint movement used on machining center. The apparatus consists of a load-receiving test piece and a load-exerting component. Moving the load-exerting component and the load-receiving test piece to a preset loading position according to a multi-axis joint movement, with the displacement value measured by displacement sensors and the amount of simulated load measured by a force sensor of the loaded-exerting component, a stiffness of the load-exertion position under a simulated load can be derived. Changing the load-exertion position, repeating in sequence the previous steps, a stiffness distribution under the simulated load can be derived.

Abstract translation: 公开了一种在加工中心上使用的具有多轴关节运动的操作位置可变装载装置。 该装置由负载接收试验片和负载施加部件组成。 根据多轴关节运动将负载施加部件和承载试验片移动到预设加载位置，通过位移传感器测量的位移值和由负载传感器的力传感器测量的模拟负载量， 可以得出在模拟载荷下载荷运动位置的刚度。 改变载荷消耗位置，依次重复前述步骤，可以得出模拟载荷下的刚度分布。

公开(公告)号：US08785898B2

公开(公告)日：2014-07-22

申请号：US12951578

申请日：2010-11-22

Applicant: Qi Li ,  Nianlong Song ,  Ding Liu

Inventor： Qi Li ,  Nianlong Song ,  Ding Liu

IPC: G01N15/06 ,  H01L27/00

CPC classification number: G01F23/292

Abstract: A laser liquid level detection device is provided with linear optical magnification of a curved minor. The device includes a laser device, a CCD detecting device having a curved mirror and a CCD sensor and signal processing devices disposed in the laser device and the CCD detecting device. The laser device emits a laser beam to a surface level of a liquid, which reflects the beam to the CCD detecting device, and the curved mirror directs the reflected beam onto the CCD sensor. The shape of the curved mirror is determined by a polynomial curve function so as to linearly magnify a change in a height of the surface when the bounced beam reaches the CCD sensor. The liquid level detection device enables the position of the surface level of the liquid to be detectable in real time with high accuracy.

Abstract translation: 激光液位检测装置具有弯曲次要的线性光学放大率。 该装置包括激光装置，具有曲面镜的CCD检测装置和CCD传感器以及设置在激光装置和CCD检测装置中的信号处理装置。 激光装置将激光束发射到液体的表面水平，其将光束反射到CCD检测装置，并且弯曲的反射镜将反射光束引导到CCD传感器上。 曲面镜的形状由多项式曲线函数确定，以便当弹跳光束到达CCD传感器时线性放大表面高度的变化。 液位检测装置能够以高精度实时地检测液体的表面水平的位置。

公开(公告)号：US20130111981A1

公开(公告)日：2013-05-09

申请号：US13811257

申请日：2011-08-04

Applicant: Yumei Huang ,  Xingang Yang ,  Ye Hui ,  Rui Zhao

Inventor： Yumei Huang ,  Xingang Yang ,  Ye Hui ,  Rui Zhao

IPC: G01N3/40

CPC classification number: G01N3/40 ,  B23Q17/00 ,  B23Q2230/002 ,  G01M99/007

Abstract: Disclosed is a processing center multi-axis joint deflection loading apparatus comprising a load-receiving test piece and a load-exerting component. The load-exerting component is constituted by a steel ball, a cap, a ball socket, a bent board, a force sensor, a connection component A, and a connection component B. The connection component A is fixedly connected to a blade handle of the processing center; the blade handle is pulled tight within a bored hole on a main axle; and the connection component A is connected to a main housing via the connection component B. In a method using the apparatus for an inspection of static stiffness distribution, by means of a multi-axle joint movement, moving the load-exerting component and the load-receiving test piece to a preset loading position, allowing the normal at a load-receiving point on a load-receiving face of the load-receiving piece to be aligned with the axis of the ball socket; with the amount of shift measured by position-shift sensors fitted on the main axle, the main axle housing, and a working platform, and the amount of simulated load measured by the force sensor of the loaded-exerting component, deriving a stiffness measurement of the load-exertion position under a simulated load; changing the load-exertion position by means of a multi-axle joint movement, repeating in sequence the previous steps, thus deriving a stiffness distribution under the simulated load.

Abstract translation: 公开了一种加工中心多轴接合偏转加载装置，其包括承载试验片和载荷施加部件。 负载施加部件由钢球，盖，球窝，弯曲板，力传感器，连接部件A和连接部件B构成。连接部件A固定地连接到 加工中心; 刀柄在主轴上的钻孔内被拉紧; 并且连接部件A经由连接部件B连接到主壳体。在使用用于检查静刚度分布的装置的方法中，通过多轴关节运动，使负载施加部件和负载 接收试件到预设加载位置，允许负载接收件的承载面上的载荷接收点处的法线与球窝的轴线对齐; 通过安装在主轴，主轴壳体和工作平台上的位置换档传感器测量的换档量以及由负载运动部件的力传感器测量的模拟负载量，导出刚度测量值 模拟载荷下的载荷作用位置; 通过多轴关节运动改变载荷消耗位置，依次重复先前的步骤，从而导出模拟载荷下的刚度分布。