Boe Technology Group Co., Ltd.

Honeywell International Inc.

Tsinghua University

Hefei Xinsheng Optoelectronics Technology Co., Ltd.

Binbin Zhang

Lei Zhang

Xiaoxun Zhu

Henry Chen

Qingpu Wang

Wenjin Fan

Jun Wu

Ying Gao

Yi Sun

Zuliang Wang

Liping Wang

Muli Liu

Luther Zhang

Wenlong Zhu

Guang Yu

Hengchun Cui

Tianrui Xu

The presently disclosed technology includes a friction stir welding apparatus comprising a frame, a moving platform and a parallel mechanism composed of three branch mechanisms, wherein a first branch mechanism comprises a first sliding pair, a first revolute pair, a telescopic rod and a first spherical pair connected in sequence. A second branch mechanism and a third branch mechanism both comprise a third sliding pair, a second revolute pair, a third linkage and a second spherical pair connected in sequence. The friction stir welding apparatus has high stiffness, low inertia, high dynamic performance and high accuracy, which can achieve precision welding with high requirements on processing quality and accuracy for jointing annular seams of large-scale rocket fuel storage tank barrels in the aviation field, for example. The presently disclosed technology also includes a corresponding friction stir welding system.

Friction stir welding apparatus and friction stir welding system comprising the same

Devices, methods, and systems for building management system analysis are described herein. One method includes embedding a plurality of statistics associated with a building within a graphical display of the building and displaying a timeline of the plurality of statistics within the graphical display.

Building management system analysis

An OGS substrate and a grinding method thereof are provided. The OGS substrate includes a base substrate, wherein a shielding pattern is formed inside a periphery region of the base substrate, a reference mark is formed above the shielding pattern, the grinding method comprises: grinding an edge of the base substrate to form a chamfer; identifying edges of the reference mark and the base substrate; calculating a position distance between an outer edge of the reference mark and the edge of the base substrate corresponding thereto based on the identified edges of the reference mark and the base substrate; judging whether the position distance is smaller than a first distance; if it is judged that the position distance is smaller than the first distance, stopping grinding; otherwise, continuing to grind.

Grinding method and OGS substrate

A grinding method, an OGS substrate and a manufacturing method of an OGS mother substrate are provided. The grinding method is used to grind the OGS substrate comprising a base substrate, wherein a shielding pattern is formed inside a periphery region of the base substrate, a reference mark is formed above the shielding pattern, the grinding method comprises: grinding an edge of the base substrate to form a chamfer; identifying edges of the reference mark and the base substrate; calculating a position distance between an outer edge of the reference mark and the edge of the base substrate corresponding thereto based on the identified edges of the reference mark and the base substrate; judging whether the position distance is smaller than a first distance; if it is judged that the position distance is smaller than the first distance, stopping grinding; otherwise, continuing to grind.

Grinding method, OGS substrate and manufacturing method of OGS mother substrate

A dual axis solar tracker is provided. The dual axis solar tracker includes a moving platform, a fixed platform, a serial chain, a parallel chain and a driving device. The moving platform is supported by the serial chain and driven by the parallel chain, forming a parallel tracking mechanism. The driving device is configured to drive the parallel chain to motion so as to drive the moving platform to rotate around vertical and horizontal axes. The dual axis solar tracker of the present disclosure has a larger workspace, a better tracking performance and advantages of high rigidity, low energy consumption, small driving torque and low inertia, etc.

Dual axis solar tracker

Growing community of inventors

Beijing, China

Binbin Zhang