公开(公告)号：US09777793B1

公开(公告)日：2017-10-03

申请号：US15349670

申请日：2016-11-11

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xuedong Chen ,  Min Wang ,  Yixiu Sun ,  Xiaoqing Li

IPC: G05B19/402 ,  F16F15/00 ,  F16M11/22 ,  F16F15/06 ,  H02N2/00

CPC classification number: F16F15/002 ,  F16F15/06 ,  F16M11/22 ,  G05B19/402 ,  G05B2219/37351 ,  G05B2219/39241 ,  H02N2/001 ,  H02N2/028 ,  H02N2/043

Abstract: A six-degree-of-freedom micro vibration suppression platform includes a basic platform, a load platform, six sets of single-degree-of-freedom active and passive composite vibration isolation devices that are exactly the same and a controller. Upper and lower ends of each set of single-degree-of-freedom active and passive composite vibration isolation devices are connected with the load platform and the basic platform, respectively. A control method includes: calculating a logical axis signal, calculating a logical axis control signal, calculating physical axis real-time control signals and a transfer step.

公开(公告)号：US20170278220A1

公开(公告)日：2017-09-28

申请号：US15126271

申请日：2016-03-17

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Lerenhan LI ,  Nong SANG ,  Changxin GAO ,  Luxin YAN ,  Jin WANG ,  Shiwei ZHANG ,  Yuanjie SHAO ,  Juncai PENG

IPC: G06T5/00 ,  G06T7/00 ,  G06T3/40

CPC classification number: G06T5/002 ,  G06T3/4007 ,  G06T3/4076 ,  G06T7/0002 ,  G06T2207/10048 ,  G06T2207/20076

Abstract: The invention discloses a method for correcting aero-optical thermal radiation noise, comprising steps of: pretreating a degraded image to obtain a multi-scale degraded image group, conducting iteration process of obtaining an optimal solution by using a last scale estimation result as an original value of next scale estimation according to the multi-scale degraded image group, thereby facilitating original-scale bias field estimation, and restoring the degraded image according to the original-scale bias field estimated value thereby obtaining an image after aero-optical thermal radiation noise correction. The invention also discloses a system for correcting aero-optical thermal radiation noise. The invention is capable of solving problems with conventional methods, comprising poor correction effect, high complexity, and incapability in correcting the thermal radiation noise at an image level, and applicable to restoration of an image with aero-optical thermal radiation noise.

公开(公告)号：US09741120B2

公开(公告)日：2017-08-22

申请号：US15105456

申请日：2014-09-02

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Tianxu Zhang ,  Longwei Hao ,  Cen Lu ,  Wenxuan Ma ,  Yuehuan Wang ,  Nong Sang ,  Weidong Yang

IPC: G06T1/00 ,  G06T5/00 ,  G01J5/10 ,  G06T7/00 ,  G06T7/70 ,  G01J5/00

CPC classification number: G06T7/70 ,  G01J5/10 ,  G01J2005/0077 ,  G06T5/001 ,  G06T2207/10048 ,  G06T2207/20076

Abstract: An infrared imaging detection and positioning method for an underground building in a planar land surface environment comprises: obtaining an original infrared image g0 formed after stratum modulation is performed on an underground building, and determining a local infrared image g of a general position of the underground building in the original infrared image g0; setting an iteration termination condition, and setting an initial value h0 of a Gaussian thermal diffusion function; using the local infrared image g as an initial target image f0, and performing iteration solution of a thermal expansion function hn and a target image fn by using a maximum likelihood estimation algorithm according to the initial value h0 of the Gaussian thermal diffusion function; and determining whether the iteration termination condition is met, if the iteration termination condition is met, using the target image fn obtained by means of iteration solution this time as a final target image f; and if the iteration termination condition is not met, continuing to perform iteration calculation. In the method, by performing demodulation processing on the infrared image formed after stratum modulation is performed on the underground building, the display of the infrared image of the original underground building is clearer, and the real structure of the underground building can be inverted.

公开(公告)号：US20170222389A1

公开(公告)日：2017-08-03

申请号：US15493106

申请日：2017-04-20

Applicant: Huazhong University of Science and Technology

Inventor： Hanyuan CHEN ,  Yingxiong QIN ,  Hao PENG ,  Chenhao WAN ,  Sichen LONG ,  Xiangxi WU ,  Xiahui TANG

IPC: H01S3/032 ,  H01S3/0943 ,  H01S3/22 ,  H01S3/04 ,  H01S3/036 ,  H01S3/034 ,  H01S3/038 ,  H01S3/0941

CPC classification number: H01S3/0323 ,  H01S3/034 ,  H01S3/036 ,  H01S3/038 ,  H01S3/0388 ,  H01S3/0404 ,  H01S3/0405 ,  H01S3/0407 ,  H01S3/041 ,  H01S3/094084 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/0943 ,  H01S3/09713 ,  H01S3/0975 ,  H01S3/2207

Abstract: A gas laser, including: a semiconductor laser, an optical beam-shaping system, a pair of electrodes, a discharge tube, a rear mirror, and an output mirror. The pair of electrodes includes two electrodes. The electrodes are symmetrically disposed at an outer layer of the discharge tube in parallel. The electrodes are connected to a radio-frequency power supply via a matching network, and the electrodes operate to modify working gas in the discharge tube through radio-frequency discharge. The rear mirror and the output mirror are disposed at two end surfaces of the discharge tube, respectively. The rear mirror, taken together with the output mirror and the discharge tube, form a resonant cavity. The output mirror is configured to output a laser beam.

公开(公告)号：US20170170660A1

公开(公告)日：2017-06-15

申请号：US15064246

申请日：2016-03-08

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jiabing HU ,  Maozeng LU ,  Muchao XIANG ,  Lei LIN

IPC: H02J3/36

CPC classification number: H02M7/483 ,  H02J3/36 ,  H02M2007/4835 ,  Y02E60/60

Abstract: Provided is an operating method of a full-bridge sub-module (FBSM)-based modular multilevel converter for HVDC transmission with AC-side voltage boosting. The peak value of the AC-side voltage is increased under a constant DC-link voltage by using FBSM's negative output voltage under steady state, wherein keeping the semiconductor's current rating constant during AC-side voltage boosting is in favor of reducing converter cost by decreasing energy interaction between the upper and lower arms in a leg, and further capacitance value of FBSM's capacitor under a constant capacitor voltage ripple, keeping the RMS value of AC-side current constant during AC-side voltage boosting can effectively improve transmission capacity of the converter while reducing converter cost, and keeping converter transmission capacity constant during AC-side voltage boosting can reduce RMS value of arm currents while reducing converter cost, thereby reducing power loss of FBSMs and improving converter efficiency.

公开(公告)号：US09651763B2

公开(公告)日：2017-05-16

申请号：US15106699

申请日：2015-02-10

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Hong Zhang ,  Jindong Fei ,  Tlanxu Zhang ,  Xiaobing Dai ,  Xlangyan Liu ,  Li Liu

IPC: G02B13/14 ,  G02B17/08 ,  G02B7/182 ,  G01J3/28 ,  G02B1/11 ,  G02B27/00 ,  G02B27/14

CPC classification number: G02B17/0808 ,  G01J3/2823 ,  G02B1/11 ,  G02B7/182 ,  G02B13/146 ,  G02B27/0025 ,  G02B27/142

Abstract: The present invention discloses a co-aperture broadband infrared optical system, belonging to the field of infrared optical system. The system realizes long wave infrared (LWIR) imaging and broadband infrared spectrum measurement, and solves the problems of limited optical path layout, large volume and high cost of an optical system. The present invention includes a Cassegrain lens, a spectroscope, a reflector, several lens groups, an FPA interface and an optical fiber interface. Light (2 μm˜12 μm) is incident to the Cassegrain lens to be focused, then is split by the spectroscope, where 50% of the LWIR light (8 μm˜10 μm) passes through the lens group for aberration correction, and the image plane is focused again at the imaging interface. The other 50% of the LWIR light (8 μm˜10 μm) and the infrared reflected light (2 μm˜8 μm and 10 μm˜12 μm) pass through the lens group, and are reflected by the reflector, then focused at the optical fiber interface. The present invention is compact in overall structure and convenient and flexible to use, has relatively low cost, and can be integrated into an image-spectrum associated detection device to implement automatic detection and tracking, which can be widely used in civil and military fields such as environmental monitoring and infrared guidance.

公开(公告)号：US20170045879A1

公开(公告)日：2017-02-16

申请号：US15113345

申请日：2015-06-12

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Jianzhong YANG ,  Bingyan FENG ,  Enming HUI ,  Guotao DING ,  Yongliang LU

IPC: G05B19/409 ,  G05B19/414

CPC classification number: G05B19/409 ,  G05B19/414 ,  G05B2219/23067

Abstract: The invention discloses a numerical control (NC) system based on a virtual host computer, the NC system comprising the virtual host computer arranged on a remote server, a local lower computer and a human-machine interactive device for human-machine interaction. The human-machine interactive device is used for providing a human-machine interactive input/output interface. The virtual host computer integrates a human-machine interactive module, a non-real-time/half-real-time task execution unit and a lower-computer control unit, and is used for receiving a NC machining instruction, processing the instruction to form a machine-tool control instruction through the non-real-time/half-real-time task execution unit, and transmitting the control data to the local lower computer through the lower-computer control unit by utilizing a network. The local lower computer controls a machine tool to execute real-time motion control and logic control. The NC system employs a new architecture formed by the upper computer and the lower computer by utilizing virtualization technology, and solves the restriction problems of data processing capability, HMI function expansion and remote machining of a conventional NC system.

Abstract translation: 本发明公开了一种基于虚拟主机的数控（NC）系统，该系统包括布置在远程服务器上的虚拟主计算机，本地下位机和用于人机交互的人机交互设备。 人机交互式设备用于提供人机交互式输入/输出接口。 虚拟主机集成人机交互模块，非实时/半实时任务执行单元和下位机控制单元，用于接收NC加工指令，处理指令形成 通过非实时/半实时任务执行单元的机床控制指令，并且通过利用网络通过下位机控制单元将控制数据发送到本地下位计算机。 本地下位机控制机床执行实时运动控制和逻辑控制。 数控系统采用虚拟化技术，采用上位机和下位机组成的新架构，解决了传统NC系统的数据处理能力，HMI功能扩展和远程加工的限制问题。

公开(公告)号：US20170017854A1

公开(公告)日：2017-01-19

申请号：US14844713

申请日：2015-09-03

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xinge YOU ,  Mohammed LUTF

IPC: G06K9/18 ,  G06K9/46 ,  G06T7/00 ,  G06K9/62

CPC classification number: G06K9/6282 ,  G06K9/00463 ,  G06K9/00879 ,  G06K9/4642 ,  G06K9/6297 ,  G06K2209/013

Abstract: Disclosed is an Arabic optical character recognition method using Hidden Markov Models and decision trees, comprising: receiving an input image containing Arabic text, removing all diacritics from the input image by detecting a bounding box of each diacritic and comparing coordinates thereof to those of a bounding box of a text body, segmenting the input image into four layers, and conducting feature extraction on the segmented four layers, inputting results of feature extraction into a Hidden Markov Model thereby generating HMM models for representing each Arabic character, conducting iterative training of the HMM models until an overall likelihood criterion is satisfied, and inputting results of iterative training into a decision tree thereby predicting locations and the classes of the diacritics and producing final recognition results. The invention is capable of facilitating simple recognition of Arabic by utilizing writing feature thereof, and meanwhile featuring comparatively high recognition precision.

Abstract translation: 公开了一种使用隐马尔可夫模型和决策树的阿拉伯语光学字符识别方法，包括：接收包含阿拉伯文本的输入图像，通过检测每个变音符号的边界框并将其坐标与边界的坐标进行比较，从输入图像中去除所有变音符号 将输入图像分割为四层，并对分段四层进行特征提取，将特征提取的结果输入隐马尔可夫模型，从而生成表示每个阿拉伯字符的HMM模型，进行HMM的迭代训练 模型，直到满足整体可能性标准，并将迭代训练的结果输入到决策树中，从而预测变音符号的位置和类别并产生最终识别结果。 本发明能够通过利用其书写特征来促进对阿拉伯语的简单识别，同时具有较高的识别精度。

公开(公告)号：US09543510B2

公开(公告)日：2017-01-10

申请号：US13917681

申请日：2013-06-14

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xiangshui Miao ,  Hao Tong ,  Xiaomin Cheng

IPC: H01L45/00

CPC classification number: H01L45/06 ,  H01L45/1226 ,  H01L45/1233 ,  H01L45/128 ,  H01L45/142 ,  H01L45/143 ,  H01L45/144 ,  H01L45/145 ,  H01L45/148 ,  H01L45/1608 ,  H01L45/1625

Abstract: A multi-layer phase change material, including: a multi-layer film structure. The multi-layer film structure includes a plurality of periodic units. The periodic units each includes a first single-layer film phase change material and a second single-layer film phase change material. The first single-layer film phase change material and the second single-layer film phase change material are alternately stacked. The first single-layer film phase change material includes chemical components that are different from chemical components included in the second single-layer film phase change material, or the first single-layer film phase change material includes chemical components that are the same as chemical components included in the second single-layer film phase change material and a percent composition of the chemical components included in the first single-layer film phase change material is different from a percent composition of the chemical components included in the second single-layer film phase change material.

Abstract translation: 一种多层相变材料，包括：多层膜结构。 多层膜结构包括多个周期性单元。 周期性单元各自包括第一单层膜相变材料和第二单层膜相变材料。 第一单层膜相变材料和第二单层膜相变材料交替堆叠。 第一单层膜相变材料包括与第二单层膜相变材料中包含的化学成分不同的化学成分，或者第一单层膜相变材料包含与化学成分相同的化学成分 包含在第二单层膜相变材料中的包含在第一单层膜相变材料中的化学成分的组成百分比与第二单层膜相变中包含的化学成分的组成百分比不同 材料。

公开(公告)号：US09534963B2

公开(公告)日：2017-01-03

申请号：US14412443

申请日：2013-12-14

Applicant: Huazhong University of Science and Technology

Inventor： Wenzhong Liu ,  Jing Zhong ,  Ling Jiang ,  Ming Yang ,  Pu Zhang ,  Ming Zhou

IPC: A61B5/01 ,  G01K7/36 ,  A61B5/05

CPC classification number: G01K7/36 ,  A61B5/01 ,  A61B5/05 ,  A61B2562/0285

Abstract: Provided is a magnetic nano temperature measurement method under a triangle wave excitation magnetic field relating to a technical field of nano measurement. The method further comprises steps of: (1) positioning a magnetic nano sample at a measured object; (2) applying a triangle wave excitation magnetic field on area of the magnetic nano sample; (3) detecting a triangle wave excitation magnetic field-time curve and a magnetization-time curve of the magnetic nano sample; (4) obtaining a magnetizing curve of the magnetic nano sample, namely excitation magnetic field-magnetization curve, by the triangle wave excitation magnetic field curve and the magnetization curve, and sampling the magnetizing curve to obtain magnetization Mi of the magnetic nano sample under excitation magnetic field Hi; and (5) determining temperature of the measured object by curve fitting with excitation magnetic field Hi as input, magnetization Mi as output, and a relationship between the excitation magnetic field and the magnetization as objective function. The invention obtains a magnetizing curve rapidly using a triangle wave excitation magnetic field, and realizes real-time and precise temperature measurement based on magnetic nanoparticles by inversion algorithms according to the magnetizing curve based on a temperature measurement model of magnetic nanoparticles under a DC magnetic field.

Abstract translation: 提供了一种与纳米测量技术领域相关的三角波激励磁场下的磁性纳米温度测量方法。 该方法还包括以下步骤：（1）将磁性纳米样品定位在测量对象处; （2）在磁性纳米样品的面积上施加三角波激发磁场; （3）检测磁性纳米样品的三角波激发磁场时间曲线和磁化时间曲线; （4）通过三角波激励磁场曲线和磁化曲线获得磁性纳米样品的励磁磁化曲线，即励磁磁场磁化曲线，并对磁化曲线进行采样，以获得磁性纳米样品在激发下的磁化强度 磁场Hi （5）通过以激励磁场Hi作为输入，磁化Mi作为输出的曲线拟合以及激励磁场与磁化之间的关系作为目标函数来确定测量对象的温度。 本发明使用三角波激发磁场快速获得磁化曲线，并且通过基于磁性纳米颗粒在直流磁场下的温度测量模型的磁化曲线的反演算法，实现基于磁性纳米粒子的实时和精确的温度测量 。