Boe Technology Group Co., Ltd.

Beijing Boe Display Technology Co., Ltd.

Microsoft Technology Licensing, LLC

Beijing Boe Optoelectronics Technology Co., Ltd.

Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd.

Goldwind Science & Technology Co., Ltd.

Beijing Xiaomi Mobile Software Co., Ltd.

Beijing Didi Infinity Technology and Development Co., Ltd.

Beihang University

Bgrimm Technology Group

Bgrimm Advanced Materials Science & Technology Co., Ltd.

Rui Guo

Jianting Wang

Zhiming Meng

Jianzi He

Weihao Hu

Junning Su

Zhanchang Bu

Bin Benjamin Zhu

Boxiao Lan

Chunbing Zhang

Hetao Wang

Jinhui Cheng

Aimin Pan

Shipeng Li

Lei Liu

Yanping Liao

Daekeun Yoon

Zongze He

Linjun Yang

Yang Yang

Hao Zhou

Luqiang Guo

Min Feng

Hengyu Yan

Weibiao Geng

Xiaokang Hou

Zhaohong Fu

Wei Zhang

Yu Wang

Weijie Zhao

Xibin Shao

Liang Zhang

Zheng Wang

Chao Zhang

Josh D Benaloh

Yingjun Zhang

Zheng Zhang

Min Li

Song Liu

Yuan Kong

Shuai Wang

Tong Liu

Nathan C Sherman

Chao Wu

Shixin Geng

Tianyang Han

Xiaojun Wang

Jin Han

Yangbing Yu

Jianming Liu

Tengfei Wang

Shiding Lin

Hanzhang Niu

Rui Sun

Dan Guo

Xinye Yang

Duokun Zhang

Changchung Cheng

Zhou Ye

Yoon Dae Keun

Jinpeng Wang

Zhaonan Liu

Yuanyan Huang

Mingjie Tang

Liangnian Lv

Lihui Han

Zhiqian Yang

Chuang Liu

Zhimin Ma

Deming Zhong

Haoyuan Gong

Yun Zha

Xiaoliang Lu

Yueguang Yu

Yinghui Cai

Lingfeng Huang

Xiao Yu

Hui Fan

Matthew Rain Darr

Junwen Wu

Shengqiang Pan

Xuecheng Zhang

The present invention provides an STPA method and apparatus for accurate identification of a loss scenario. The method comprises: defining the purpose of the analysis, comprising identifying of a loss; modeling a system state machine using a finite state machine; identifying an unsafe control action using the identified loss and the modeled system state machine. The method according to the present invention achieves accurate and efficient identification of loss scenarios of a complex system using state machines and model checking techniques.

STPA method and device for accurate identification of loss scenarios

A wind turbine generator set, and a control method and apparatus for a wind power converter are provided. The control method includes extracting a super-synchronous oscillation component of a grid-side voltage of a wind power converter and a super-synchronous oscillation component of a grid-side current of the wind power converter. The control method also includes determining a phase angle of equivalent impedance of the wind power converter based on the super-synchronous oscillation component of the grid-side voltage and the super-synchronous oscillation component of the grid-side current. The control method further includes setting an operation mode of the wind power converter based on the super-synchronous oscillation component of the grid-side voltage and/or the super-synchronous oscillation component of the grid-side current, and the phase angle.

Wind turbine, and control method and apparatus for converter of wind turbine

A self-monitoring method of a display and a display are disclosed. The self-monitoring method of a display includes: acquiring first display parameters of at least two frames of image outputted by the display, in which each frame of image of the at least two frames of image corresponds to a first display parameter, and extraction of first display parameters of two adjacent frames of image in the at least two frames of image has a time interval; acquiring a fifth difference between a maximum value of at least two first display parameters corresponding to the at least two frames of image and a minimum value of at least two first display parameters corresponding to the at least two frames of image; and acquiring a first preset threshold, comparing the fifth difference with the first preset threshold, and determining whether or not display abnormality presents in the display.

Self-monitoring method of display and display

Provided is a display module. The display module includes: a backplane, a middle frame, a backlight module, and a display panel; wherein the backlight module and the display panel are sequentially laminated on the backplane; the middle frame includes a first frame body and a bearing structure, wherein the first frame body surrounds the backlight module, the bearing structure is disposed on the first frame body and extends in a direction towards a center of the backlight module, and the backlight module and the display panel are respectively disposed on two faces of the bearing structure; and the backlight module includes a light guide plate, and the display module has a view angle greater than or equal to 45° on at least one side of the display module.

Display module and display apparatus

The present disclosure provides a control method and control apparatus for a voltage source-type wind turbine. The control method comprises: performing a proportional-integral-derivative operation on a deviation between a DC bus voltage measurement value and DC bus voltage reference value of a wind turbine to obtain an active power deviation; determining a virtual angular frequency deviation on the basis of the active power deviation; determining a virtual internal potential phase on the basis of the virtual angular frequency deviation; obtaining a d-axis virtual impedance output and an q-axis virtual impedance output by means of inputting a grid-connected current in a dq coordinate system to a virtual impedance module; on the basis of the virtual angular frequency deviation, a reactive power setting value and reactive power measurement value of the wind turbine, a rated voltage amplitude of a grid, the d-axis virtual impedance output and the q-axis virtual impedance output, determining a d-axis component and q-axis component of a modulation voltage; and controlling an injection voltage of a grid-connected point of the wind turbine according to the virtual internal potential phase and the d-axis component and q-axis component of the modulation voltage.

Control method and control apparatus for voltage source-type wind turbine

A titanium alloy blade tip with a wear-resistant protective coating and a preparation method thereof are provided. The method includes: (1) spraying MCrAlY alloy powder on a surface of a titanium alloy blade tip by high velocity oxygen fuel (HVOF) spraying at a spraying distance of 300-400 mm to obtain the titanium alloy blade tip with a MCrAlY layer on the surface; where M is one of Ni and NiCo; (2) pre-plating Ni at a current density of 4-10 A/dm; (3) placing the pre-plated titanium alloy blade tip in a Watt solution, covering a surface of the pre-plated titanium alloy blade tip obtained in the step (2) with abrasive particles, and then performing composite electroplating at a current density of 0.5-2 A/dm. In the method, the wear-resistant protective coating with the high adhesion strength is prepared on the titanium alloy blade tip, and the wear-resistant protective coating has good wear resistance.

Titanium alloy blade tip with high adhesion strength and wear-resistant protective coating and preparation method thereof

A method and an apparatus for controlling display screen, and a storage medium are provided. The method includes: acquiring temperature information of a target region of a display control chip, in which the display control chip is configured to control display of a display screen by controlling display of a LED light plate of a display module of an electronic device; adjusting brightness of the display screen of the electronic device according to the temperature information of the target region.

Method for controlling display screen, device, and storage medium

A self-monitoring method of a display and a display are disclosed. The self-monitoring method of a display includes: inputting a first image test signal including a predetermined image test signal, in which the first image test signal includes playing signals of at least two frames of test image that are played in turn by switching; acquiring a display parameter of the predetermined image test signal; dividing at least two frames of image outputted into a plurality of areas, in which the areas include a predetermined area and a remaining area; acquiring a first display parameter of the predetermined area; determining whether or not an image displayed is matched with the first image test signal to acquire a first match result; and determining whether or not display abnormality presents in the display based on the first match result. The method can determine whether or not display abnormality presents in the display.

The present application provides a method and device for controlling a generator-side terminal voltage of a converter, and a controller of the converter. The method includes: determining an upper limit of the generator-side terminal voltage based on a present voltage value of a direct-current (DC) bus of the converter, where the generator-side terminal voltage is a voltage of an output terminal of a generator, and the output terminal is connected to the converter; determining an optimal value of the generator-side terminal voltage that minimizes a present value of a generator-side current, where the generator-side current is a current of the output terminal of the generator; setting a target value of the generator-side terminal voltage based on the upper limit and the optimal value of the generator-side terminal voltage. The target value includes a control reference value of the generator-side terminal voltage.

Method and device for controlling generator-side terminal voltage of converter, and controller of converter

The driving method includes: inputting a first scanning signal to each of the first touch electrodes at a same time, and receiving a first sensing signal of each of the second touch electrodes to determine a suspected column according to the first sensing signal; inputting a second scanning signal to each of the second touch electrodes at a same time, and receiving a second sensing signal of each of the first touch electrodes to determine a suspected row according to the second sensing signal; determining a suspected touch region according to the suspected column and the suspected row; and sequentially inputting a third scanning signal row by row to each of the first touch electrodes in the suspected touch region, and receiving a third sensing signal of each of the second touch electrodes in the suspected touch region to determine a touch position according to the third sensing signal.

Touch panel driving method and apparatus, and touch display device

Provided are an optical compensation strip, a display panel, a display device and a driving method, and relates to the display technology field. The optical compensation strip is applicable to a spliced display panel. The optical compensation strip may comprise: a display cover plate, and at least two prisms disposed opposite to the display cover plate. A gap exists between each prism and the display cover plate. The at least two prisms are configured for refracting light emitted from the two adjacent sub-display panels to an area of the display cover plate corresponding to the seam.

Optical compensation strip, display panel, display device and driving method

A self-monitoring method of a display and a display are disclosed. The self-monitoring method of a display includes: inputting a first image test signal including a predetermined image test signal; acquiring a display parameter of the predetermined image test signal; dividing at least one frame of image outputted into a plurality of areas, in which the plurality of areas of the image include a predetermined area and a remaining area; acquiring a first display parameter of the predetermined area; comparing the display parameter of the predetermined image test signal with the first display parameter, determining whether or not an image displayed by the display is matched with the first image test signal to acquire a first match result; and determining whether or not display abnormality presents in the display based on the first match result. The method can determine whether or not display abnormality presents in the display.

A self-monitoring method of a display and a display are disclosed. The self-monitoring method of a display includes: inputting a first image test signal; acquiring a display parameter of the first image test signal; acquiring a first display parameter of at least one frame of image outputted, based on the first image test signal, by the display, in which each frame of image of the at least one frame of image corresponds to a corresponding first display parameter; comparing the display parameter of the first image test signal with the first display parameter, determining whether or not an image displayed by the display is matched with the first image test signal so as to acquire a first match result; and determining whether or not display abnormality presents in the display based on the first match result. The method can determine whether or not display abnormality presents in the display.

A data detection method and device, a storage medium and a touch device are provided. The data detection method includes: collecting a plurality of initial detection values corresponding to a same touch point; comparing the plurality of initial detection values with a dynamic threshold of the touch point, and retaining the initial detection values which meet requirements as detection retention values; and adjusting the dynamic threshold of the touch point according to the detection retention values, wherein the adjusted dynamic threshold is used for comparing with the initial detection value corresponding to the touch point which is collected subsequently. The data detection method may adjust the dynamic threshold for touch points, and overcome an influence of environmental factors leading to a false detection.

Data detection method and device, storage medium and touch device

A stylus (), a touch panel (), a display device and a touch sensing method are provided. The stylus () includes: a first emitting electrode (); a second emitting electrode (), wherein a distance between the first emitting electrode () and the second emitting electrode () in an extension direction of the stylus () is greater than zero; and an emitting circuit (), which is connected to the first emitting electrode () and the second emitting electrode (), respectively. The emitting circuit () is used to emit a first electrical signal outwards through the first emitting electrode () and to emit a second electrical signal outwards through the second emitting electrode (), so that the touch panel () determines a tilt angle (A) of the stylus () relative to the touch panel () according to the received first and second electrical signals.

Stylus, touch panel, display device and touch sensing method

Growing community of inventors

Beijing, China

Rui Guo