Analysis on the Importance of "Design Shift" in Art Talents' Cultivating

Under different historical conditions, there are different interpretations for Design Shift. The cultivation of artistic talents in today's society has been enriched a lot. Designers do not only create economic wealth for the community, but also a kind of social responsibility — designing a way of life.

Optimization Design of Double-parameter Shift Schedule of Tracked Vehicle with Hydrodynamic-mechanical Transmission

A kind of automatic shift schedule optimization method is provided for a tracked vehicle with hydrodynamic-mechanical transmission in order to improve its dynamic performance. A dynamic model of integrated hydrodynamic-mechanical transmission is built in MATLAB/Simdriveline environment, and an optimum shift schedule is derived by using iSight software to call the dynamic model above, then the shift schedule is achieved after optimization. The simulation results show that the method is significant to improve the dynamic performance and gear-shifting smoothness theoretically and practically.

Reliability-based multidisciplinary design optimization using incremental shifting vector strategy and its application in electronic product design

Use of multidisciplinary analysis in reliabilitybased design optimization(RBDO) results in the emergence of the important method of reliability-based multidisciplinary design optimization(RBMDO). To enhance the efficiency and convergence of the overall solution process,a decoupling algorithm for RBMDO is proposed herein.Firstly, to decouple the multidisciplinary analysis using the individual disciplinary feasible(IDF) approach, the RBMDO is converted into a conventional form of RBDO. Secondly,the incremental shifting vector(ISV) strategy is adopted to decouple the nested optimization of RBDO into a sequential iteration process composed of design optimization and reliability analysis, thereby improving the efficiency significantly. Finally, the proposed RBMDO method is applied to the design of two actual electronic products: an aerial camera and a car pad. For these two applications, two RBMDO models are created, each containing several finite element models(FEMs) and relatively strong coupling between the involved disciplines. The computational results demonstrate the effectiveness of the proposed method.

IRS辅助的车联网相移设计和信道对齐策略

针对车联网中车辆的动态移动以及信号的随机散射所导致的信道快速变化问题,研究了智能反射面(intelligent reflecting surface,IRS)辅助的车联网通信并提出了联合相移设计和信道对齐策略,以削减车联网中多普勒频移的影响并提升通信性能。提出的策略由两个阶段构成。在第一阶段设计IRS的相移以改善级联信道的衰落状态,在策略的第二阶段进行修正函数的设计,实现了直接信道和级联信道的信道对齐,从而减少直接信道快衰落状态对通信性能的影响。通过联合相移设计和信道对齐策略中设计的反射相移以及修正函数,实现了通信性能的提升。仿真结果表明,所提策略相比于相移优化策略可以提升8.8%的频谱效率。

基于延边三角形接法的24脉波移相变压器设计与电磁特性分析

针对核心设备24脉波移相变压器,从移相原理出发进行设计,并建立场路耦合模型对电磁设计和绕组短路力进行核算,其中关键设计参数移相角与理论值最大偏差仅为0.53%。在此基础上加工实验样机进行实验,移相角度偏差最大仅为0.2°。综合仿真与实验结果,24脉波移相变压器设计有效,且场路耦合模型适用于多脉波移相变压器的电磁仿真。

模拟乒乓球运动的逻辑电路设计

阐述在数字逻辑电路实验教学中引入游戏电路设计。以模拟乒乓球游戏电路的设计为例,该游戏电路综合运用计数器、移位寄存器、锁存器等逻辑器件,利用按键模拟两位选手的乒乓球拍,利用发光二极管模拟乒乓球及其运动路径,A端与B端相互击球,数码管显示选手的当前得分,游戏难度可通过改变时钟电路的频率进行调节。

湖南当代家具设计创新机制研究

在国家战略实施和产业转移的时代背景下,湖南省承接内地家具产业转移的重任,当地家具行业进入了新的发展态势。设计创新作为推动湖南家具产业创新的原动力,发挥着重大作用。旨在将家具设计创新体系中的创新主体为切入点,分析湖南“设计教育与研究系统”“设计支撑与促进系统”“设计制造与规划系统”“设计传播与推广系统”“设计展会与展示系统”等子系统中的创新活动承担者及其代表性创新活动,探析湖南家具设计创新的运行机制,并展望湖南省家具产业的良好前景。这将为推进湖南省家具创新,构建可持续发展的家具创新体系提供有力的借鉴与参考。

RIS辅助通感一体化:波束成形和反射相移的联合设计

ISAC允许通信和雷达共享频谱资源,被视为解决未来无线网络频谱拥塞的一项有前途的技术。当信道退化严重时,仅依靠基站侧天线获得的性能增益十分有限,RIS因其能够创建有利的传播环境已成为一项革命性技术,借助RIS可为ISAC系统创建额外的链路以提高系统性能。基于此,提出RIS辅助ISAC,通过联合设计基站的有源波束成形和RIS的反射相移,以最大化加权和速率与探测功率,并提出了基于加权均方最小误差和分数规划的交替算法来解决这一问题。仿真结果证明在ISAC中部署RIS并合理优化其相移可以有效提升通信和感知的性能。

民国时期儿童科普读物视觉设计问题与启示

目的探究民国时期儿童科普读物在当时社会场域中,如何通过视觉设计达到儿童的科普教育与“新民”培养使命,以期这种设计经验为当下儿童科普读物提供宝贵镜鉴。方法通过回归当时语境,对儿童科普杂志视觉与精英人士论述原始材料进行统计分类,借用场域与接受美学理论对儿童科普读物中的视觉问题进行研究。结果在民国时期社会场域中,儿童科普读物通过童趣视觉美学构成了读物的召唤结构、满足了儿童的“期待视域”与“审美经验”,并为儿童植入新一代公民意识与深沉的救国使命,使之成为被建构的结构。儿童也在这一时期伴随近现代物质、制度层面的转变而被发现和塑造,养成新的科学惯习,最终共同建构了救国论叙事。结论儿童科普读物的视觉转变,其本质上是受到精英人士提倡的兴趣观、平等观、救国观,以及未来新民培养的国家资本所推动,是国家为改变被动局面而主动进行的一场观念变革。

何以本位:民国时期儿童读物中装帧问题的改良与启示

民国时期,儿童读物的装帧设计发生了从“家长本位”到“儿童本位”的转变,通过考察当时的社会语境及精英话语,发掘出民国时期儿童读物通过引导儿童心理健康发展的封面与版式设计,激活富有童趣的汉字图案化设计,贯穿美育意识的插图设计等,共同构建了儿童读物的召唤结构,满足了儿童的“期待视域”与“审美经验”需求,传达出“儿童本位”的设计表征。文章认为,这一转变本质上是受到精英人士倡导的儿童健康观、功能观、美育观以及着眼于培养未来新民的观念所推动,是为改变陈腐、落后的儿童读物出版局面而主动进行的革故鼎新。这些经验对于当下某些儿童读物中存在的成人化现象,仍具有重要的现实启示意义。

空间与权利:轮椅设计源流考略及其对现代轮椅设计的启示

设计师长期关注轮椅的“技术物”属性,而忽视其“社会物”属性。轮椅的使用空间是用户展开社会生活与实践的场所,其空间性如何在设计流变中由社会形塑,对当代设计有何启示?本研究采用历史性研究方法对轮椅设计源流进行梳理,发现早期轮椅是社会身份隐喻与贵族社交媒介,空间形态表现出自我展示的戏剧性;18至20世纪,经由绅士文化、休闲文化与消费主义等社会文化驱动,轮椅的使用空间转变为更具真实性的实用“场景”,形成家庭空间与休闲空间两条脉络;进入20世纪,空间成为权利与治理技艺的意识形态,轮椅进入公共空间的合法性遭遇质疑,轮椅设计成为空间权利重构的重要力量。轮椅空间趋向于社会生活的场所化空间,轮椅设计应服务用户私人空间的日常性、增强公共空间的归属感,并助力社会群体参与出行资源与空间的使用、共享与决策。

基于优化CCSK调制的低轨卫星通信导航一体化信号设计方法

给出了一种基于优化循环码移键控(cyclic code shift keying,CCSK)方式的通信导航一体化信号设计方法,使通信信号的互相关函数的正值与导航信号自相关函数的峰值一致,从而克服互相关干扰,提高通信速率。通过频分复用的方式划分通信信号和导航信号的频带,基于正交频分复用(orthogonal frequency division multiplexing,OFDM)技术提出连续分配、交替分配和随机分配3种子载波分配方案。对优化CCSK调制和CCSK调制的一体化信号的自相关峰值性能进行仿真和分析,结果表明,在3种子载波分配方案下,采用优化CCSK调制的一体化信号的自相关峰值性能均优于CCSK调制的一体化信号,且采用优化CCSK调制的通信信号的互相关特性对相应的导航信号的自相关峰值有增强作用,可提升通信导航一体化信号体制下导航信号的码相位同步性能。

采用Mean-Shift算法的目标跟踪系统设计

为了提高对目标的精确识别和稳定跟踪,在深入分析研究Mean-Shift算法及跟踪原理的基础上,提出一种基于Mean-Shift算法的目标跟踪系统设计思想。通过对海上及陆上目标的实际跟踪验证,表明该设计能够有效地去除海浪散射等背景干扰,实现对目标的稳定跟踪,验证了在复杂背景下基于Mean-Shift算法的目标跟踪系统设计是合理可行的。

论设计思维——设计哲学研究之一

设计是工程活动的开端和关键环节。设计哲学是哲学研究的新领域,其主要的哲学研究方法不是“照着讲”或“接着讲”,而是“转域讲”。不同于自然科学主要关注因果过程和因果关系,工程活动首先是目的性过程,是“目的和设计引导”的过程。作为“设计的目标”的人工物有自身的时空特征,它只能是未来时间中的带有偶然性特征的人工物,从而只能是想象的结果,而不能在工程活动开始时成为被感觉检验的对象。设计的对象和目标既不能来自“经验(知觉)”,也不能来自“先天必然的天赋观念”。不同于不受经验检验约束的艺术思维,设计思维中的想象的本性是要构想未来满足需求的可经验人工物。设计思维以图像而非语言为最基本的表达方式。

基于电磁和磁流变弹性体的复合隔振器设计及仿真分析

针对电磁隔振器主动控制力不足和磁流变弹性体(MRE)隔振器移频范围窄的问题,提出并设计了一种基于电磁和MRE的复合隔振器。对复合隔振器进行整体结构设计及磁路分析,通过等效磁路法得到电磁隔振系统的解析电磁力表达式。同时采用COMSOL软件对电磁隔振系统及MRE隔振系统进行磁场仿真分析,并通过Dymola动力学仿真软件对复合隔振器进行动力学仿真,分析其隔振性能。仿真结果表明,增大复合隔振器中励磁线圈电流能够增大隔振器固有频率,并且能有效削减不同激励频率下的共振幅值。

汽车旋钮式电子换挡器结构设计与手感优化

目前国产电子换挡器产品市场占有率不高,技术竞争力偏弱。为此,以某新能源车型旋钮式电子换挡器的研发为例,讲解了其工作原理与主体结构方案,以及旋钮操作力矩和操作手感的设计优化过程。在开展操作力矩设计时,因摩擦力矩难以准确估算,提出模糊理论设计+多型号弹簧实物验证的方法,实测结果满足设计要求,有效缩减了电子换挡器的开发难度与周期;最后从手感方案选型、降低摩擦力矩、冲击震感等多方面总结了换挡旋钮的操作手感优化方法,为同类产品的结构设计与优化提供参考。

An Ant Colony Algorithm Based on Cross-Layer Design for Routing and Wavelength Assignment in Optical Satellite Networks

This paper introduces an ant colony routing and wavelength assignment algorithm based on cross-layer design(CL-ACRWA),which can overcome the adverse effects of Doppler wavelength shift on data transmission in optical satellite networks. Firstly, a cross-layer optimization model is built, which considers the Doppler wavelength shift, the transmission delay as well as wavelength-continuity constraint. Then an ant colony algorithm is utilized to solve the cross-layer optimization model, resulting in finding an optimal light path satisfying the above constraints for every connection request. The performance of CL-ACRWA is measured by the communication success probability, the convergence property and the transmission delay. Simulation results show that CL-ACRWA performs well in communication success probability and has good global search ability as well as fast convergence speed. Meanwhile, the transmission delay can meet the basic requirement of real-time transmission of business.

Influences of phase performances shift on superresolution of annular filters

This paper investigates the influences of phase shift on superresolution performances of annular filters. Firstly, it investigates the influence of phase shift on axial superresolution. It proves theoretically that axial superresolution can not be obtained by two-zone phase filter with phase shift n, and it gets the phase shift with which axial superresolution can be brought by two-zone phase filter. Secondly, it studies the influence of phase shift on transverse superresolution. It finds that the three-zone phase filter with arbitrary phase shift has an almost equal optimal transverse gain to that of commonly used three-zone phase filter, but can produce a much higher axial superresolution gain. Thirdly, it investigates the influence of phase shift on three-dimensional superresolution. Three-dimensional superresolution capability and design margin of three-zone complex filter with arbitrary phase shift are obtained, which presents the theoretical basis for three-dimensional superresolution design. Finally, it investigates the influence of phase shift on focal shift. To obtain desired focal shifts, it designs a series of three-zone phase filters with different phase shifts. A spatial light modulator （SLM） is used to implement the designed filters. By regulating the voltage imposed on the SLM, an accurate focal shift control is obtained,

Dynamic routing and wavelength assignment algorithm of optical satellite networks based on cross-layer design

In order to overcome the adverse effects of Doppler wavelength shift on data transmission in the optical satellite networks,a dynamic routing and wavelength assignment algorithm based on crosslayer design( CL-DRWA) is introduced which can improve robustness of the network. Above all,a cross-layer optimization model is designed,which considers transmission delay and wavelength-continuity constraint,as well as Doppler wavelength shift. Then CL-DRWA is applied to solve this model,resulting in finding an optimal light path satisfying the above constraints for every connection request. In CL-DRWA,Bellman-Ford method is used to find an optimal route and a distributed relative capacity loss method is implemented to get an optimal wavelength assignment result on the optimal route. Moreover,compared with the dynamic routing and wavelength assignment algorithm based on minimum delay strategy( MD-DRWA),CL-DRWA can make an improvement of 5. 3% on the communication success probability. Meanwhile,CL-DRWA can meet the requirement of transmission delay for real-time services.

Ethernet Controller SoC Design and Its Low-Power DFT Considerations

In this paper, an Ethernet controller SoC solution and its low power design for testability （DFT） for information appliances are presented. On a single chip, an enhanced one-cycle 8-bit micro controller unit （MCU）, media access control （MAC） circuit and embedded memories such as static random access memory （SRAM）, read only memory （ROM） and flash are all integrated together. In order to achieve high fault coverage, at the same time with low test power, different DFT techniques are adopted for different circuits： the scan circuit that reduces switching activity is implemented for digital logic circuits; BIST-based method is employed for the on-chip SRAM and ROM. According to the fault-modeling of embedded flash, we resort to a March-like method for flash built in self test （BIST）. By all means above, the result shows that the fault coverage may reach 97%, and the SoC chip is implemented successfully by using 0.25 μm two-poly four-metal mixed signal complementary metal oxide semiconductor （CMOS） technology, the die area is 4.8×4.6 mm^2. Test results show that the maximum throughput of Ethemet packets may reach 7Mb·s^1.