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INTEGRATED APPROACH TO ASSEMBLY SEQUENCE PLANNING OF C0MPLEX PRODUCTS

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Chinese Journal of Mechanical Engineering 2004年第2期17卷 181-184页

作者： Wang Junfeng Liu Jihong zhong yifang CAD Center,Huazhong University of Science and Technology,Wuhan 430074, China CAD Center Huazhong University of Science and Technology Wuhan 430074

Assembly sequence planning will be more difficult due to the increasingcomplexity of products. An integrated approach to assembly sequence planning of complex productsapplying de-composition-planning-combination strategy is presented. First, an assembly is decomposedinto a hierarchical structure using an assembly structure representation based on connectors. Then,an assembly planning system is used to generate the sequences that are locally optimal for eachleaf partition hi the structure hierarchy. By combining the local sequences systematically in abottom-up manner and choosing suitable ones from the merged sequences, the assembly sequence of eachparent structure including the whole assembly is generated. An integrated system has beencompleted. A complex product is given to illustrate the feasibility and the practicality of theapproach.

关键词： Assembly sequence planning Assembly decomposition Structure hierarchy Sequence combination

INTEGRATED LAYOUT DESIGN OF CELLS AND FLOW PATHS

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Chinese Journal of Mechanical Engineering 2003年第3期16卷 225-228页

作者： Li Zhihua zhong yifang Zhou Ji CAD Center, Huazhong University of Science and Technology,Wuhan 430074, China CAD Center Huazhong University of Science and Technology Wuhan 430074

The integrated layout problem in manufacturing Systems is investigated. Anintegrated model for Concurrent layout design of cells and flow paths is formulated. A hybridapproach combined an enhanced branch-and-bound algorithm with a simulated annealing scheme isproposed to solve this problem. The integrated layout method is applied to re-layout the gear pumpshop of a medium-size manufacturer of hydraulic pieces. Results show that the proposed layout methodcan concurrently provide good solutions of the cell layouts and the flow path layouts.

关键词： Facility layout Integrated layout design Material flow network Manufacturing system

CAD/CAE OF THE WORKING CHARACTERISTICS OF A NEW TYPE OF FLUID COUPLING SHOCK ABSORBER

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Chinese Journal of Mechanical Engineering 2002年第3期15卷 222-227页

作者： Yang Ping zhong yifang Zhou JiSchool of Mechanical Science and Engineering, Huazhong University of Science and Technology,Wuhan 430074, ChinaLiu Yong Guilin Institute of Electronic Technology School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan 430074

For purpose of simulation of the working characteristics of a new type offluid coupling shock absorber for vibration protection of sensitive equipment, a physical model ispresented by analyzing the internal fluid dynamic phenomenon with respect to the coupling shockabsorber and implemented in MATLAB software package. Using the model it is possible to evaluate theimportance of different factors for design of the shock absorber. In the meantime, the key-modelmachine is designed for coupling dynamic test. Comparisons with experimental results confirm thevalidity of the model. So the CAD/CAE software has been developed in MATLAB for design andexperimental test of the new coupling shock absorber.

关键词： Fluid coupling shock absorber Working characteristics Model Simulation

Lignocellulose-Based Optical Biofilter with High Near-Infrared Transmittance via Lignin Capturing–Fusing Approach

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Research 2024年第3期2023卷 139-149页

作者： Shixu Yu yifang Zhou Meixue Gan Lu Chen Yimin Xie Yuning zhong Qinghua Feng Chaoji Chen Hubei Provincial Key Laboratory of Green Materials for Light Industry Hubei University of TechnologyWuhan 430068China.Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key LaboratorySchool of Resource and Environmental SciencesWuhan UniversityWuhan 430079China Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory School of Resource and Environmental SciencesWuhan UniversityWuhan 430079China Hubei Open University Wuhan 430074China.

Near-infrared (NIR) transparent optical filters show great promise in night vision and receiving windows. However, NIR optical filters are generally prepared by laborious, environmentally unfriendly processes that involve metal oxides or petroleum-based polymers. We propose a lignin capturing–fusing approach to manufacturing optical biofilters based on molecular collaboration between lignin and cellulose from waste agricultural biomass. In this process, lignin is captured via self-assembly in a cellulose network;then, the lignin is fused to fill gaps and hold the cellulose fibers tightly. The resulting optical biofilter featured a dense structure and smooth surface with NIR transmittance of ~90%, ultralow haze of close to 0%, strong ultraviolet-visible light blocking (~100% at 400 nm and 57.58% to 98.59% at 550 nm). Further, the optical biofilter has comprehensive stability, including water stability, solvent stability, thermal stability, and environmental stability. Because of its unique properties, the optical biofilter demonstrates potential applications in the NIR region, such as an NIR-transmitting window, NIR night vision, and privacy protection. These applications represent a promising route to produce NIR transparent optical filters starting from lignocellulose biomass waste.

关键词： transparent starting waste

维普期刊数据库评论

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基于网络的总体方案多层次综合评价系统

华中科技大学学报（自然科学版） 2005年第11期33卷 57-59,66页

作者：钟毅芳袁骥轩华中科技大学机械科学与工程学院湖北武汉430074

在对现有的几种评价方法进行分析的基础上,针对评价对象在评价时要求细化指标、分层评价的实际情况,提出了一种将层次分析法和灰色模糊评价方法相结合的基于局域网的总体方案多层次综合评价方法.将局域网与评价系统结合起来,采用B/S结构... 详细信息

在对现有的几种评价方法进行分析的基础上,针对评价对象在评价时要求细化指标、分层评价的实际情况,提出了一种将层次分析法和灰色模糊评价方法相结合的基于局域网的总体方案多层次综合评价方法.将局域网与评价系统结合起来,采用B/S结构,采取检查登录机制确保系统安全,利用ASP环境下的网络传输技术进行数据传输,使用数据库技术作为评价系统模块和网络通信结构模块之间的数据接口,建立了一种可用于总体方案评价的基于网络的评价支持系统.应用所开发的系统和提出的综合评价方法,对某组巡航导弹进行总体方案评价,结果表明,该评价方法和所开发的评价支持系统是较为实用和有效的.

关键词：综合评价网络评价灰色模糊评价

A Study of Model for Distributed Measurement and Control System

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微计算机信息 2003年第9期 19-20页

作者： Zhang,Jin zhong,yifang (Huazhong University of Science&Technology430074) Huazhong University of Science & Technology 430074

This paper is concerned with a method for forming distributed measurement and control system.A three-layer structure model based on network,physical node layer and func-tion node layer is *** is designed on object-ori... 详细信息

关键词： distributed measurement and control system ob-ject-oriented design physical layer node function node.

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并行设计中机械产品可制造性评价方法研究

农业机械学报 2001年第3期32卷 83-86,89页

作者：胡伟钟毅芳周济华中科技大学机械学院武汉市430074

并行设计要求在产品设计阶段就考虑后继的各项设计和生产活动 ,因此可制造性评价成为并行设计的重要环节。生产的复杂性和多样性决定了可制造性评价的内容十分丰富 ,方法多种多样 ,本文的目的是探讨可制造性评价的模式。运用层次分析法... 详细信息

并行设计要求在产品设计阶段就考虑后继的各项设计和生产活动 ,因此可制造性评价成为并行设计的重要环节。生产的复杂性和多样性决定了可制造性评价的内容十分丰富 ,方法多种多样 ,本文的目的是探讨可制造性评价的模式。运用层次分析法分析机械产品可制造性评价的主要任务及其分解策略 ,并运用优化方法和模糊子集理论求解子任务 ,通过模糊量的量化实现设计方案排序和选优 ,并逐级综合 ,实现对设计方案的综合评价。按此原理开发了一个实时信息反馈 CAD/

关键词：并行设计模糊子集评价机械产品可制造性

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混合动力汽车能量管理控制器参数优化

华中科技大学学报（自然科学版） 2006年第9期34卷 94-96页

作者：何海钟毅芳蔡池兰华中科技大学国家CAD支撑软件工程技术研究中心湖北武汉430074

设计了一种新的基于人工免疫网络优化的模糊神经混合动力汽车能量管理控制器.该控制器结合模糊控制和神经网络的优点,利用神经网络的自学习能力,自动生成模糊规则和隶属函数,并不断优化隶属函数的参数,直到达到设计要求.为了避免神经网... 详细信息

设计了一种新的基于人工免疫网络优化的模糊神经混合动力汽车能量管理控制器.该控制器结合模糊控制和神经网络的优点,利用神经网络的自学习能力,自动生成模糊规则和隶属函数,并不断优化隶属函数的参数,直到达到设计要求.为了避免神经网络的学习过程陷入局部极值点,采用人工免疫网络优化神经网络的参数.仿真结果显示,经过参数优化的模糊神经能量管理控制器的性能比普通能量管理控制器好,能进一步降低HEV的油耗.

关键词：混合动力汽车能量管理策略模糊神经网络人工免疫网络

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机械系统动态优化设计的复合遗传算法

机械工程学报 1999年第5期35卷 27-30页

作者：李强周济钟毅芳内蒙古工业大学机械系呼和浩特010062 华中理工大学

针对机械系统动态优化设计的工程问题，提出了一种新的人工智能优化方法——复合遗传算法。该方法在遗传算法的操作中增加改造操作，较大地提高了寻优效率。基于概率论完成了该方法更高效寻优机理的理论分析。数值分析结果表明，该方法... 详细信息

针对机械系统动态优化设计的工程问题，提出了一种新的人工智能优化方法——复合遗传算法。该方法在遗传算法的操作中增加改造操作，较大地提高了寻优效率。基于概率论完成了该方法更高效寻优机理的理论分析。数值分析结果表明，该方法结果正确，算法简洁。

关键词：机械系统动态设计智能优化复合遗传算法