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Shared Control of Highly Automated Vehicles Using Steer-By-Wire Systems

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IEEE/CAA Journal of Automatica Sinica 2019年第2期6卷 410-423页

作者： chao huang Fazel Naghdy Haiping Du Hailong huang the College of Information Science and Engineering Northeastern University the School of Electrical Computer and Telecommunications Engineering University of Wollongong

A shared control of highly automated Steer-by-Wire system is proposed for cooperative driving between the driver and vehicle in the face of driver's abnormal driving. A fault detection scheme is designed to detect the abnormal driving behaviour and transfer the control of the car to the automatic system designed based on a fault tolerant model predictive control(MPC) controller driving the vehicle along an optimal safe *** proposed concept and control algorithm are tested in a number of scenarios representing intersection, lane change and different types of driver's abnormal behaviour. The simulation results show the feasibility and effectiveness of the proposed method.

关键词： Driver behaviour highly automation shared control steer-by-wire system

Spatial and seasonal variability of global ocean diapycnal transport inferred from Argo profiles

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Journal of Oceanology and Limnology 2019年第2期37卷 498-512页

作者： huang chao XU Yongsheng Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao 266071China Function Laboratory for Ocean Dynamics and Climate Qingdao National Laboratory for Marine Science and TechnologyQingdao 266000 China University of Chinese Academy of Sciences Beijing 100049 China Center for Ocean Mega-Science Chinese Academy of Sciences Qingdao 266071 China

The global diapycnal transport in the ocean interior is one of the significant branches to return the deep water back toward near-surface. However, the amount of the diapycnal transport and the seasonal variations are not determined yet. This paper estimates the dissipation rate and the associated diapycnal transports at 500 m, 750 m and 1 000 m depth throughout the global ocean from the wide-spread Argo profiles, using the finescale parameterizations and classic advection-diff usion balance. The net upwelling is ~5.2±0.81 Sv (Sverdrup) which is approximately one fifth in magnitude of the formation of the deep water. The Southern Ocean is the major region with the upward diapycnal transport, while the downwelling emerges mainly in the northern North Atlantic. The upwelling in the Southern Ocean accounts for over 50% of the amount of the global summation. The seasonal cycle is obvious at 500 m and vanishes with depth, indicating the energy source at surface. The enhancement of diapycnal transport occurs at 1000min the Southern Ocean, which is pertinent with the internal wave generation due to the interaction between the robust deep-reaching flows and the rough topography. Our estimates of the diapycnal transport in the ocean interior have implications for the closure of the oceanic energy budget and the understanding of global Meridional Overturning Circulation.

关键词： dissipation rate diapycnal transport upwelling meridional overturning circulation

基于数字孪生的模块化生产系统实践教学平台设计与实现

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实验技术与管理 2024年第3期41卷 244-250页

作者：孙树文丁家旺董明杰黄超北京工业大学机械与能源工程学院先进制造技术北京市重点实验室北京100124

该文将数字孪生技术应用于模块化生产系统(modular production system,MPS)的智能化改造中,构建了基于数字孪生的MPS实践教学平台。依托监控系统和虚实交互等关键技术,增加了MPS数字孪生体的虚拟建模、虚实联调和PLC程序软件在环/硬件... 详细信息

该文将数字孪生技术应用于模块化生产系统(modular production system,MPS)的智能化改造中,构建了基于数字孪生的MPS实践教学平台。依托监控系统和虚实交互等关键技术,增加了MPS数字孪生体的虚拟建模、虚实联调和PLC程序软件在环/硬件在环调试等实训环节;验证了MPS实践教学平台设计方案的可行性;制定了新的教学框架及详细的实训内容和考核方案。最后,将实训内容与大学生竞赛相结合,提高了学生对智能制造、工业生产的认知能力和实践动手能力。

关键词：智能制造模块化生产系统数字孪生实践教学平台虚拟调试

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非晶合金铁芯粘接-冲裁-叠压工艺研究

塑性工程学报 2024年第2期31卷 51-57页

作者：黄秀东郭硕杜冰崔海龙刘凤华黄朝洋严祥鑫宁波震裕科技股份有限公司浙江宁波315613 燕山大学先进锻压成形技术与科学教育部重点实验室河北秦皇岛066004

针对非晶合金在室温状态下冷加工性能不佳导致难以对其进行常规冲裁加工,严重限制其在电机领域的应用的问题,提出了一种粘接-冲裁-叠压工艺,以提高非晶合金的室温冲裁能力。首先,将多片非晶合金叠压粘结成具有一定厚度的坯料,然后对非... 详细信息

针对非晶合金在室温状态下冷加工性能不佳导致难以对其进行常规冲裁加工,严重限制其在电机领域的应用的问题,提出了一种粘接-冲裁-叠压工艺,以提高非晶合金的室温冲裁能力。首先,将多片非晶合金叠压粘结成具有一定厚度的坯料,然后对非晶合金坯料进行冲裁,最终将冲裁后的成品叠压成铁芯产品。试验证明,该工艺生产的非晶合金成品断面光洁,毛刺高度低于5μm,表面质量满足叠压要求,叠压后的成品满足电机铁芯的制造要求,解决了非晶合金在室温下冲裁质量较差、毛刺较高等问题。

关键词：非晶合金电机铁芯粘接-冲裁-叠压工艺质量分析

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考虑轴力影响的盾构隧道纵向地震响应解析

岩土力学 2024年第10期45卷 2971-2980页

作者：任璐瑶吴镇杰黄啟超关振长福州大学土木工程学院福建福州350116

如何合理估算盾构隧道的地震响应,一直是业界和学界关注的研究热点。相较于横断面地震响应,盾构隧道的纵向地震响应更为复杂。将盾构隧道视为Winkler地基上的Timoshenko梁,考虑轴力影响,包括残余轴力和纵向地震附加轴力,提出纵向与横向... 详细信息

如何合理估算盾构隧道的地震响应,一直是业界和学界关注的研究热点。相较于横断面地震响应,盾构隧道的纵向地震响应更为复杂。将盾构隧道视为Winkler地基上的Timoshenko梁,考虑轴力影响,包括残余轴力和纵向地震附加轴力,提出纵向与横向地层位移共同作用的理论计算模型,并通过有限差分方法求解盾构隧道纵向地震响应。依托常规6.2m级错缝拼装的盾构隧道进行算例验证,考虑轴力影响使得盾构隧道整体刚度得以提高,内力与变形响应均有所减小;若不考虑轴力影响,则可退化为传统计算方法。进一步地,通过参数敏感性分析探讨了隧道残余轴力、地基反力系数、地震波入射角及波长对盾构隧道纵向地震响应的影响规律。结果表明:残余轴力越大,等效梁整体刚度提升越大,盾构隧道地震响应越小;且入射角小于45°时,残余轴力对隧道地震响应的影响更加显著。地基反力系数越大,隧道整体挠度和环间局部非连续变形均越大;波长在20~100 m范围内的地震波更容易导致隧道环缝间发生较大的张开和错台。以上研究成果可为盾构隧道纵向抗震设计提供理论支撑。

关键词：盾构隧道纵向地震响应 Timoshenko梁有限差分解

Defining the biosynthesis of ketocarotenoids in Chromochloris zofingiensis

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Plant Diversity 2020年第1期42卷 61-66页

作者： Ying Ye Jun-chao huang Department of Economic Plants and Biotechnology Yunnan Key Laboratory for Wild Plant ResourcesKunming Institute of BotanyChinese Academy of SciencesKunming650201People's Republic of China University of Chinese Academy of Sciences Beijing100049People's Republic of China

Carotenoids are important pigments in photosynthetic organisms where they play essential roles in photoreception and *** zofingiensis is a unicellular green alga that is able to accumulate high amounts of ketocarotenoids including astaxanthin,canthaxanthin and ketolutein when growing heterotrophically or mixotrophically with glucose as a carbon *** we elucidate the ketocarotenoid biosynthesis pathway in *** by analyzing five algal *** mutants were shown to have a single nucleotide insertion or substitution in β-carotene ketolase(BKT) gene 1,which resulted in a lack of ketocarotenoid production in Cz-bktl-1,and decreased ketocarote noid co ntent in the other four *** mutants accumulated much higher amounts of non-ketocarotenoids(β-carotene,zeaxanthin and lutein).Interestingly,the Cz-bktl-5 mutant synthesized 2-fold the ketolutein and only 1/30 of the canthaxanthin and astaxanthin as its parent strain,suggesting that the mutated BKT1 exhibits much higher activity in catalyzing lutein to ketolutein but lower activity in ketolating β-carotene and *** and WT BKT2 gene sequences did not *** together,we conclude that BKT1 is the key gene involved in ketocarotenoid biosynthesis in *** study provides insight into the biosynthesis of ketocarotenoids in green ***,Cz-bktl mutants may serve as a natural source for the production of zeaxanthin,lutein,and β-carotene.

关键词： Chromochloris zofingiensis Astaxanthin Ketocarotenoid β-carotene ketolase

ANSYS和ADAMS在菌落挑取机器人结构设计中的运用

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机械设计与制造 2024年第1期395卷 327-331页

作者：李体仁周小琦杨文林黄超陕西科技大学机电工程学院陕西西安710021 广州中国科学研究院先进技术研究所广东广州511458

针对现有菌落挑取机器人挑取速度低、集成自动化程度低、挑针重复利用率低等问题,设计出一种多针同时操作的转盘式挑取机器人。首先,为保证主要受力部件(气缸安装版与转盘)的应力、应变在误差范围内,运用有限元分析软件ANSYS Workbench... 详细信息

针对现有菌落挑取机器人挑取速度低、集成自动化程度低、挑针重复利用率低等问题,设计出一种多针同时操作的转盘式挑取机器人。首先,为保证主要受力部件(气缸安装版与转盘)的应力、应变在误差范围内,运用有限元分析软件ANSYS Workbench分别对其校核了Z轴定位精度和平面定位精度,由静力学分析结果确定其强度可靠且精度满足设计要求,准确挑取;其次,为保证菌落挑取过程平稳,利用仿真软件ADAMS对菌落分度挑选机构(弧面分度凸轮)进行动力学分析,研究分度挑选机构的动态特性及其运动规律,发现各运动参数的仿真结果与理论相吻合,保证新型机器人在挑取过程中可以避免冲击和振动的发生。该结果表明:挑取机构的强度、刚度及运动的平稳性均满足要求,有效验证了设计的合理性。

关键词：菌落挑取机器人挑取机构有限元分析动力学仿真

Stochastic stabilization of Markovian jump systems closed by a communication network: an auxiliary system approach

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Science China(Information Sciences) 2023年第10期66卷 229-245页

作者： Guoliang WANG Siyong SONG chao huang School of Information and Control Engineering Liaoning Petrochemical University College of Information and Engineering Northeastern University

This study examines the stabilization of continuous-time Markovian jump systems, whose controller is added in the diffusion section. Unlike the traditionally stochastic controllers, the proposed controller is connected by a communication network. Not only the state but also the switching signal is sampled and transmitted. Because the sampling of switching signals makes analyzing and synthesizing the system more difficult, an auxiliary system approach is presented to handle these problems. Particularly, a novel system with an exponential matrix characterizing the sampling effects is developed while the sampling rate is fully considered in the given conditions. Moreover, more special situations of sampled controllers are *** numerical examples are offered to confirm the effectiveness and superiority of the methods proposed in this study.

关键词： Markovian jump system Brownian motion sampled switching signal stochastic stabilization networked control

听性脑干反应与多频稳态反应联合评估婴儿轻度感音神经性听力损失的研究

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实用医学杂志 2024年第16期40卷 2305-2310页

作者：蒋秋亚谢秋盈黄宇黄超兰红利刘茂洁赖丹西南医科大学附属医院耳鼻咽喉头颈外科四川泸州646000

目的探讨听性脑干反应(auditory brainstem response,ABR)与多频稳态反应(auditory steady-state response,ASSR)联合评估婴儿轻度感音神经性听力损失的意义。方法回顾性分析确诊的114例轻度感音神经性听力损失的婴儿,收集其ABR和ASSR... 详细信息

目的探讨听性脑干反应(auditory brainstem response,ABR)与多频稳态反应(auditory steady-state response,ASSR)联合评估婴儿轻度感音神经性听力损失的意义。方法回顾性分析确诊的114例轻度感音神经性听力损失的婴儿,收集其ABR和ASSR的结果,进行秩和检验和相关性分析。结果在秩和检验中,短纯音刺激ABR(Tb-ABR)和ASSR在0.5、1、2、4 kHz的反应阈值差异有统计学意义(P0.05),其余各组均呈正相关(P<0.05),0~3个月:r=0.686、0.643、0.671、0.742;4~6个月:r=0.671、0.626、0.616、0.693;7~12个月在2 kHz和4 kHz:r=0.571、0.706。结论对于轻度感音神经性听力损失的婴儿,ABR和ASSR在各频率的评估听阈具有相关性,二者联合应用可以更准确的评估受试者的真实听力。

关键词：轻度感音神经性听力损失听性脑干反应多频稳态反应婴儿