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薄膜复合粘接工艺的PID控制优化分析

粘接 2024年第2期51卷 9-12页

作者：赵向杰尹培丽西安航空职业技术学院陕西西安710089 西安工业大学陕西西安710021

为块状物薄膜复合粘接工艺提供精确可靠的控制方案,根据不同薄膜复合粘接工艺进行分析得到电机控制特征,并与传统的控制方法进行控制效率对比,对茶砖薄膜复合粘接的步骤加以确定并使用PLC实现粘接系统控制,通过PID策略分析和MATLAB仿真... 详细信息

为块状物薄膜复合粘接工艺提供精确可靠的控制方案,根据不同薄膜复合粘接工艺进行分析得到电机控制特征,并与传统的控制方法进行控制效率对比,对茶砖薄膜复合粘接的步骤加以确定并使用PLC实现粘接系统控制,通过PID策略分析和MATLAB仿真后,选择得到块状物粘接控制方案,粘接过程中的各阶段的阶跃响应曲线,下料时间有效缩短为其定重时间的80%以上,并缩短原有下料时间25%-34%。通过使用合适的PID控制方案有效地优化了原有粘接工艺,为实际应用于相关生产过程中提供科学的理论支持。

关键词：块状物粘接 PID控制策略软硬件设计阶跃响应曲线

Effect of combined electromagnetic fields on surface quality and structure of a HDC casting 5182 Al alloy ingot

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Acta Metallurgica Sinica(English Letters) 2012年第6期25卷 453-460页

作者： Qingfeng ZHU Zhihao zhao Yubo ZUO xiangjie WANG Jianzhong CUI Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University Shenyang 110819 China

5182 Al alloy ingots with the diameters of 100 mm are produced by conventional and combined electromagnetic fields （CEMF） horizontal direction chill （HDC） cast- ing process. The effect of CEMF on the ingot surface quality and floating grains is investigated. The results show that the CEMF is effective in reducing the segregation layer in both top and bottom sub-surfaces. Big floating grains with coarse dendrite arms mainly distribute in the crescent-shaped area near the bottom in the conven- tional HDC casting ingot. With the application of the CEMF, they disappear in the whole cross section of the HDC casting ingot and the equiaxed grains are significantly refined.

关键词： Aluminum alloy Combined electromagnetic field Horizontaldirect chill casting Structure Surface quality

Effect of casting speed on surface quality of horizontal direct chill casting 7075 aluminum alloy ingot

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Acta Metallurgica Sinica(English Letters) 2011年第5期24卷 399-404页

作者： Qingfeng ZHU Zhihao zhao Jianzhong CUI xiangjie WANG Ke QIN Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University Shenyang 110819 China

7075 aluminum alloy ingot with the diameter izontal direct chill casting in different casting of 100 mm has been produced by horspeed. The effect of the casting speed on the ingot surface and subsurface layer was studied by surface observation and subsurface structure analysis. It was found that increasing the casting speed results in the adding of segregation knots in the ingot surface. The thickness of the dendrite microstrueture layer in the subsurface reduces with increasing the casting speed. And the elements of Zn, Cu and Mg enrich in the coarse dendrite microstructure layer of the ingot.

关键词： Horizontal direct chill casting Casting speed 7075 aluminumalloy Surface quality

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微型发光二极管全彩色显示研究进展(特邀)

激光与光电子学进展 2024年第1期61卷 420-429页

作者：黄丽香韩冰闫龙赵项杰朱酉良林肖李梓维潘安练湖南大学材料科学与工程学院湖南光电集成创新研究院湖南长沙410082 诺视科技(苏州)有限公司江苏苏州215011

基于发光二极管的显示技术在电视、电脑、手机等终端产品上获得了广泛应用。与传统液晶显示器和有机发光二极管屏幕相比,微型发光二极管(Micro-LED)显示器件在尺寸、性能、功耗、使用寿命等方面均具有显著优势。总结了Micro-LED全彩色... 详细信息

基于发光二极管的显示技术在电视、电脑、手机等终端产品上获得了广泛应用。与传统液晶显示器和有机发光二极管屏幕相比,微型发光二极管(Micro-LED)显示器件在尺寸、性能、功耗、使用寿命等方面均具有显著优势。总结了Micro-LED全彩色显示的技术类别和产品应用场景,综述了实现Micro-LED全彩色显示的最新研究进展,包括巨量转移技术、色转换层集成技术和外延芯片单片集成技术,并进一步比较分析这些技术的优缺点,展望了Micro-LED全彩色显示技术的未来发展。

关键词：发光二极管显示技术单片集成巨量转移氮化镓

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MicroLED全彩色微显示技术研究进展

南通大学学报（自然科学版） 2024年第3期23卷 1-9页

作者：闫龙韩冰赵项杰黄建华童杨李梓维湖南大学材料科学与工程学院湖南长沙410082 国家自然科学基金委员会高技术研究发展中心北京100044

随着可穿戴器件、增强现实、混合现实等新型显示产品的广泛应用和普及,新型显示技术在微小器件尺寸、高分辨率、高稳定性等性能方面又提出了更高的性能需求。基于微型发光二极管(microlight emitting diode,MicroLED)的微型显示器件具... 详细信息

随着可穿戴器件、增强现实、混合现实等新型显示产品的广泛应用和普及,新型显示技术在微小器件尺寸、高分辨率、高稳定性等性能方面又提出了更高的性能需求。基于微型发光二极管(microlight emitting diode,MicroLED)的微型显示器件具有低功耗、高稳定、长寿命和响应时间短等突出特征,其相关技术和产品近年来已被广泛应用于VR/AR眼镜、微投影设备等。在蓝光MicroLED矩阵像元芯片上通过集成色转换像元、超表面结构等可以构筑红、绿、蓝(RGB)三基色阵列发光器件,从而在有源驱动控制下实现动态的全彩色图像显示。文章总结了实现MicroLED全彩色微显示的主流技术,包括荧光粉色转换技术、量子点色转换技术和超表面结构集成技术,并进一步分析和对比了相关技术的优缺点,综述了MicroLED全彩色微显示器件的最新研究进展,探讨了相关技术在推动新型显示产业发展中的重要意义。

关键词：发光二极管显示技术颜色转换量子点荧光粉

基于可调剪切干涉曝光方法的大口径液晶偏振光栅制备

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液晶与显示 2024年第5期39卷 602-609页

作者：沈浩段佳陈一波乔冉李大鹏曾建成沈志学赵祥杰张大勇中国工程物理研究院流体物理研究所四川绵阳621900

为了解决传统偏振全息干涉方法受限于过长的光路难以制备长周期的大口径液晶偏振光栅的问题,提出了基于液晶偏振光栅模板的可调剪切干涉曝光方法,并通过理论分析了制备偏振光栅的周期随模板方位角及沿光轴轴向位置的变化。利用小口径高... 详细信息

为了解决传统偏振全息干涉方法受限于过长的光路难以制备长周期的大口径液晶偏振光栅的问题,提出了基于液晶偏振光栅模板的可调剪切干涉曝光方法,并通过理论分析了制备偏振光栅的周期随模板方位角及沿光轴轴向位置的变化。利用小口径高效液晶偏振光栅作为模板搭建可调剪切干涉曝光光路,并基于此制备了数十微米周期的200 mm口径液晶偏振光栅,平均衍射效率达到99%以上,平均周期约为59.86μm,周期分布不均匀性约为0.07%。实验结果表明,调剪切干涉曝光方法能够制备大口径的长周期偏振光栅,周期和效率分布均匀,还具备周期易于调节、结构紧凑和抗振动干扰强等优势。

关键词：液晶偏振光栅长周期可调剪切干涉曝光大口径

A multi-axis robot-based bioprinting system supporting natural cell function preservation and cardiac tissue fabrication

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Bioactive Materials 2022年第12期7卷 138-150页

作者： Zeyu Zhang Chenming Wu Chengkai Dai Qingqing Shi Guoxin Fang Dongfang Xie xiangjie zhao Yong-Jin Liu Charlie CLWang Xiu-Jie Wang Institute of Genetics and Developmental Biology Innovation Academy of Seed DesignChinese Academy of SciencesBeijing100101China Beijing National Research Center for Information Science and Technology Department of Computer Science and TechnologyTsinghua UniversityBeijing100084China Department of Mechanical Aerospace and Civil EngineeringThe University of ManchesterManchesterM204BXUK Faculty of Industrial Design Engineering Delft University of TechnologyDelft2628the Netherlands University of Chinese Academy of Sciences Beijing100049China

Despite the recent advances in artificial tissue and organ engineering,how to generate large size viable and functional complex organs still remains as a grand challenge for regenerative ***-dimensional bioprinting has demonstrated its advantages as one of the major methods in fabricating simple tissues,yet it still faces difficulties to generate vasculatures and preserve cell functions in complex organ ***,we overcome the limitations of conventional bioprinting systems by converting a six degree-of-freedom robotic arm into a bioprinter,therefore enables cell printing on 3D complex-shaped vascular scaffolds from all *** also developed an oil bath-based cell printing method to better preserve cell natural functions after *** with a self-designed bioreactor and a repeated print-and-culture strategy,our bioprinting system is capable to generate vascularized,contractible,and long-term survived cardiac *** bioprinting strategy mimics the in vivo organ development process and presents a promising solution for in vitro fabrication of complex organs.

关键词： Six degree-of-freedom robot 3D bioprinting Artificial organ engineering Print-and-culture Cardiac tissue fabrication

Study Progress on Animal Feces Treatment by Microorganism

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Meteorological and Environmental Research 2014年第11期5卷 56-59页

作者： Kuang Zheshi Chen Jie zhao xiangjie Lin Xianli Institute of Sericulture and Agricultural Products Processing Guangdong Academy of Agricultural Sciences Yangchun Lvheng Biotechnology Co. Ltd.

With the fast development of livestock breeding,serious environmental pollution issues caused by the large accumulation of animal feces have arisen increasingly. It is of great importance to re-use these organic matter resources in order to ease the environmental and resource problems. And we reviews the significance of microorganism for livestock development and particularly the close relationship between microorganism and biodegradation of animal breeding residues. These bacteria play important roles in odor control,degradation and conversion of organic matters,and even the reduction of animal waste discharging amount by adjusting the feed nutrition proportion or improving the digestibility of nutrients. Consequently,it shows good application prospect of microbe practice in the improvement of contaminated environment resulting from livestock farming residues and the utilization of livestock manure resource.

关键词： Animal feces Microorganism Environmental pollution Resource utilization China

High Quality Insect for Livestock Manure Treatment-Hermetia illucens

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Animal Husbandry and Feed Science 2015年第2期7卷 86-88,96页

作者： Chen Jie Kuang Zheshi Xiao Ming zhao xiangjie Lin Xianli Institute of Sericulture and Agricultural Products Processing Guangdong Academy of Agricultural Sciences Shanghai Normal University Yangchun Green King Organism Co. Ltd.

The raising technology and nutritional value evaluation of Hermetia iUucens and its application in livestock manure treatment was reviewed, which lays a new theoretical basis for sustainable development of agriculture.

关键词： Hermetia iUucens Livestock manure Biomass