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Machine Intelligence Research 2024年第2期21卷 400-410页

作者： Dezheng Wang Yinglong Wang Fan Yang Liyang Xu yinong zhang Yiran Chen Ning Liao School of Automation Southeast UniversityNanjing 210096China Software and Artificial Intelligence College Chongqing Institute of EngineeringChongqing 400056China Beijing National Research Center for Information Science and Technology(BNRist) Department of AutomationTsinghua UniversityBeijing 100084China Liangjiang International College Chongqing University of TechnologyChongqing 401135China Smart City College Beijing Union UniversityBeijing 100101China

In industrial process control systems,there is overwhelming evidence corroborating the notion that economic or technical limitations result in some key variables that are very difficult to measure online.The data-driven soft sensor is an effective solution because it provides a reliable and stable online estimation of such variables.This paper employs a deep neural network with multiscale feature extraction layers to build soft sensors,which are applied to the benchmarked Tennessee-Eastman process(TEP)and a real wind farm case.The comparison of modelling results demonstrates that the multiscale feature extraction layers have the following advantages over other methods.First,the multiscale feature extraction layers significantly reduce the number of parameters compared to the other deep neural networks.Second,the multiscale feature extraction layers can powerfully extract dataset characteristics.Finally,the multiscale feature extraction layers with fully considered historical measurements can contain richer useful information and improved representation compared to traditional data-driven models.

关键词： Multi-scale feature extractor deep neural network(DNN) multirate sampled industrial processes prediction

Endoscopic measurement of lesion size:An unmet clinical need

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Chinese Medical Journal 2024年第4期137卷 379-381页

作者： yinong Zhu Wei Liu Lifan zhang Bing Hu Department of Gastroenterology West China HospitalSichuan UniversityChengduSichuan 610041China

In recent years,the field of endoscopy has experienced significant technological advancements.These developments have facilitated the efficient use of endoscopy for precise examination and minimally invasive treatment of various lesions.A key parameter considered during both endoscopic diagnosis and treatment is the size of the lesion.In colon polypectomy,the size of the polyp is linked to the probability of malignancy and the likelihood of complications.Similarly,in the case of early gastric cancer,larger tumors are often associated with an increased likelihood of lymph node metastasis,and whether to perform endoscopic submucosal dissection(ESD)is partially dependent on the size of the lesion.Therefore,accurate measurement of lesion size may significantly impact the diagnosis and treatment plan for the patient.However,at present,there is no standardized method for quantitative measurement during endoscopy.This lack of a universal technique hinders the ability of clinical guidelines to provide precise recommendations for treatment.

关键词： diagnosis clinical size

Output Tracking Control of a Hydrogen-air PEM Fuel Cell

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IEEE/CAA Journal of Automatica Sinica 2017年第2期4卷 273-279页

作者： Shiwen Tong Jianjun Fang yinong zhang College of Automation Beijing Union UniversityBeijing 100101China

Hydrogen-air proton exchange membrane(PEM)fuel cell is a promising clean energy. However, the stack output tracking control is still a challenging problem due to the soft characteristic of the stack. Both over-and less-control will cause the stack flooding or oxygen lacking which dramatically decreases the life of stacks. Traditional control methods rely on the accurate model of the fuel cell system, which is a high-order nonlinear system, and involve a complex controller design process. This paper combines the data-based fuzzy cluster modeling technology with the sliding mode control and the integral actions. The sliding mode controller tracks the dynamic changes of the fuel cell system and the integral controller eliminates the steady-state errors. Simulation results demonstrate good performance of the proposed control method.

关键词： Fuel cell fuzzy cluster modeling integral compensation sliding mode control

Control strategy for wayside supercapacitor energy storage system in railway transit network

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Journal of Modern Power Systems and Clean Energy 2014年第2期2卷 181-190页

作者： Zongyu GAO Jianjun FANG yinong zhang Di SUN College of Automation of Beijing Union University Beijing 100101China School of Electrical Engineering Beijing Jiaotong UniversityBeijing 100044China

This paper discusses the control strategy for energy management in railway transit network with wayside(substation)supercapacitor(SC)energy storage system(ESS).Firstly,the structure of the wayside energy storage system is introduced.Secondly,the model of energy storage system is built and the control strategy is described.Thirdly,in order to estimate the required energy storage system,a useful method is proposed to predict the instantaneous regenerative energy magnitude which is delivered to each substation.Finally,the ESS configuration for each substation is determined.A simplified mathematical model of the whole metro network is established and the main features of the control strategy are developed.Numerical simulations show the efficacy of suggested control strategy and the energy saving obtained for railway transit network.

关键词： Supercapacitor(SC) Energy storage system(ESS) Regeneration failure Control strategy Railway transit network

卫星光机载荷热模型参数高效修正方法研究进展

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航空学报 2024年第6期45卷 216-234页

作者：李玉涵杨宝玉吴亦农张强唐晓中国科学院上海技术物理研究所上海200083 中国科学院大学北京100049

卫星光机载荷的光学效能与热设计密切相关,热控系统的模型修正是热设计必不可少的环节。近年国内外涌现出许多基于深度学习和寻优算法的提高热模型修正效率和精确度的方法可供参考,但没有进行系统的归纳。本文针对新出现的修正方法进行... 详细信息

卫星光机载荷的光学效能与热设计密切相关,热控系统的模型修正是热设计必不可少的环节。近年国内外涌现出许多基于深度学习和寻优算法的提高热模型修正效率和精确度的方法可供参考,但没有进行系统的归纳。本文针对新出现的修正方法进行了总结,重点分析了在卫星光机载荷热控模型修正这一特殊问题中提高修正效率的几种手段——合适的寻优算法、构建代理模型和开发自动修正工具等。具体分析了这3种手段各自的研究进展及其适用条件和局限性,并提出了对于修正工具开发的思考。最后,对卫星光机载荷热控模型修正领域进行了展望,为后续提高热模型精确度和修正效率提供了方向。

关键词：卫星光机载荷模型修正代理模型算法热设计

甘肃省特色农业全产业链禀赋条件、模式解构和关键路径分析

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管理科学与研究（中英文版） 2024年第3期13卷 36-42页

作者：张艺农甘肃农业大学财经学院甘肃兰州730070

推进特色产业全产业链发展是促进农业农村现代化发展的重要抓手,而理清其发展具备的禀赋条件、现状、模式及制约因素,对于构建明确的产业发展体系具有关键作用。研究以甘肃特色农业为对象,对其全产业链的发展问题进行深入剖析,从产业、... 详细信息

推进特色产业全产业链发展是促进农业农村现代化发展的重要抓手,而理清其发展具备的禀赋条件、现状、模式及制约因素,对于构建明确的产业发展体系具有关键作用。研究以甘肃特色农业为对象,对其全产业链的发展问题进行深入剖析,从产业、生产、经营三个维度,重点提出了优化全产业链发展空间布局、明确全产业链发展的功能区划、发展特色农业、建设现代仓储物流、提升产业集聚度和融合度、培育新型农业经营主体的对策建议。

关键词：全产业链特色农业产业关键路径,甘肃

基于多模型自适应方法的智能汽车路径跟踪控制

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重庆大学学报 2024年第3期47卷 1-15页

作者：梁艺潇李以农 Amir Khajepour 郑玲余颖弘张紫微重庆大学机械与运载工程学院重庆400044 滑铁卢大学机械与机电工程学院加拿大安大略省滑铁卢市N2L3G1

路径跟踪控制是智能汽车的一项核心技术,跟踪效果的精确性和在各种路面附着条件下的鲁棒性是该技术的两大关键要素。但汽车动力学模型的不确定性,尤其是轮胎侧偏刚度的摄动使这两者难以同时得到满足。针对这一问题,将多模型自适应理论... 详细信息

路径跟踪控制是智能汽车的一项核心技术,跟踪效果的精确性和在各种路面附着条件下的鲁棒性是该技术的两大关键要素。但汽车动力学模型的不确定性,尤其是轮胎侧偏刚度的摄动使这两者难以同时得到满足。针对这一问题,将多模型自适应理论引入到智能汽车运动控制中处理不确定性系统的控制。首先,推导了多模型自适应控制律,提出了凸包构架下各个顶点的子模型对真实模型的自适应逼近律,并通过李雅普诺夫函数证明了所提出自适应律的收敛能力。在此基础上建立了汽车动力学模型和车辆-路径联合模型,并由多个顶点子模型构建可覆盖汽车轮胎侧偏刚度摄动范围的凸多面体,利用汽车动力学模型求解自适应率,通过车辆-路径联合模型,基于线性二次型方法(linear quadratic regulator,LQR)求解各个顶点的子模型处的反馈控制律,并通过所得出的自适应权重进行加权。基于Carsim/Simulink的联合仿真结果表明,所提出的多模型自适应路径跟踪控制器在保证鲁棒性的同时克服了传统鲁棒控制方法的保守性问题,与基于名义模型的LQR控制器和鲁棒保性能控制器相比,在高附着路面和低附着路面上都可以取得更好的控制效果,很好地解决了路径跟踪控制中精确性与鲁棒性之间的两难问题。最后,通过快速原型测试平台对算法进行了进一步的实验验证。结果表明,所提出的多模型自适应算法实时性良好,具有较好的工程应用潜力。

关键词：智能汽车车辆动力学路径跟踪控制模型不确定性多模型自适应控制

Iridocorneal Endothelial Syndrome in a Chinese Child

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Eye Science 2013年第3期28卷 153-156页

作者： Wei Tang Qinghua Wang Qing zhang Song Sun yinong zhang Zhifeng Wu Department of Ophthalmology Wuxi Second Hospital Affiliated Nanjing Medical University

Purpose: We reported a rare case of ICE syndrome in a Chinese child.Case report: A 6-year-old child was admitted to the ophthalmology department of the Affiliated Wuxi Second Hospital of Nanjing Medical University, complaining of elevated intraocular pressure at his first diagnosis in a local hospital. The patient was initially treated with medication..During subsequent follow up,.two iris holes were seen in the patient's right eye and he was then diagnosed with ICE syndrome. The child underwent surgery combined with mitomycin C intraoperatively.The intraocular pressure was stably controlled.Conclusion:.ICE syndrome has been rarely reported in children. Glaucoma filtering surgery combined with intraoperative administration of mitomycin is efficacious for intraocular pressure control.

关键词：综合征儿童中国虹膜丝裂霉素C 内皮角膜药物治疗

多视角视觉-惯性融合的车间AGV精确导航方法

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机器人 2024年第4期46卷 476-487页

作者：王鑫李耕宇曾子铭高焕兵张吟龙沈阳建筑大学电气与控制工程学院辽宁沈阳110168 深圳职业技术学院汽车与交通学院广东深圳518055 山东建筑大学信息与电气工程学院山东济南250101 山东省智能建筑技术重点实验室山东济南250101 中国科学院网络化控制系统重点实验室辽宁沈阳110016 中国科学院沈阳自动化研究所机器人学国家重点实验室辽宁沈阳110016

以实现车间AGV精确导航为目标,针对视觉-惯性融合定位方法存在的缺少绝对位姿、绝对尺度估计不准确、累积误差大等问题,提出一种多视角视觉-惯性紧耦合的实时定位方法。首先为了建立全局参考坐标系,实现长期漂移校正,设计了一种具有全... 详细信息

以实现车间AGV精确导航为目标,针对视觉-惯性融合定位方法存在的缺少绝对位姿、绝对尺度估计不准确、累积误差大等问题,提出一种多视角视觉-惯性紧耦合的实时定位方法。首先为了建立全局参考坐标系,实现长期漂移校正,设计了一种具有全局一致性的视觉-惯性融合AGV导航框架。然后针对视觉-惯性融合初始化过程中的尺度估计不准问题,提出多视角相机与IMU(惯性测量单元)联合初始化方法,通过最大后验概率模型得到更精准的初始化参数。针对跟踪估计部分存在的误差累积和惯性偏差漂移问题,提出二维码位姿修正模型,对部分关键帧进行周期性补偿。针对优化建图部分存在的位姿优化易陷入局部极值问题,提出位姿约束优化模型,提高AGV定位精度。搭建了车间AGV导航平台上对本文方法进行了验证,并与当前最先进的视觉-惯性导航方法进行比对,结果表明本文方法的时间效率与定位精度均明显优于对比方法;平移的均方根误差小于50 mm,旋转的均方根误差小于2?。

关键词： AGV(自动导引运输车) 导航视觉-惯性融合多视角二维码全局一致

Influence of Texture on Hall-Petch Slope in Hot-extruded AZ31 Magnesium Alloys

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Journal of Wuhan University of Technology(Materials Science) 2023年第4期38卷 917-923页

作者：王岭 ZHAO Yiquan WANG Yanmeng SUN Chao CHEN Hongmei zhang Jing ZHAO Mei LIU Ying WANG yinong Liaoning Key Laboratory of Chemical Additive Synthesis and Separation Yingkou Institute of TechnologyYingkou115014China CATARC Automotive Test Center(Tianjin)Co. LtdTianjin300399China School of Electrical Engineering Dalian University of TechnologyDalian116024China Provincial Key Lab of Advanced Welding Technology Jiangsu University of Science and TechnologyZhenjiang212003China School of Metallurgy and Materials Engineering Jiangsu University of Science and TechnologyZhangjiagang215600China School of Materials Science and Engineering Dalian University of TechnologyDalian116024China

To study the influence of texture on Hall-Petch slope,the Hall-Petch relationships of two hot-extruded AZ31 alloys(A117 and A189)were determined by the measurement of yield strength at room temperature.To determine the real texture difference,the texture changes were facilitated by the variation of extrusion ratio and demonstrated by the actual grain orientation distributions.The A117 alloys exhibited higher Hall-Petch slope in comparison of A187 in the condition of tension and compression,because A117 alloys had lower volume fraction of grains in the range of basal pole 75°-90°.The Hall-Petch slope differences for both alloys were analyzed and discussed by boundary obstacle against deformation propagation in grains with various orientation.Due to the higher volume fraction of grains in the range of basal pole 75°-90°in A189,the effect of hindering dislocation slip or twinning propagation by grains boundary was weaker than of A117.

关键词： Hall-Petch relationship AZ31 texture