摘要：In order to meet the requirements of nondestructive testing of true 3D topography of micro-nano structures,a novel three-dimensional atomic force microscope(3D-AFM)based on flared tip is developed.A high-precision scanning platform is designed to achieve fast servo through moving probe and sample simultaneously,and several combined nanopositioning stages are used to guarantee linearity and orthogonality of *** eliminate the signal deviation caused by AFM-head movement,a traceable optical lever system is designed for cantilever deformation *** addition,a method of tailoring the cantilever of commercial probe with flared tip is proposed to reduce the lateral force applied on the tip in *** tailored probe is mounted on the 3D-AFM,and 3D imaging experiments are conducted on different samples by use of adaptive-angle scanning *** results show the roob-mean-square value of the vertical displacement noise(RMS)of the prototype is less than 0.1 nm and the high/width measurement repeatability(peak-to-peak)is less than 2.5 nm.

摘要：对于精装交付的项目,设计时需要考虑减少装修阶段的土建改造量,选用技术可行、施工简便的工艺降低施工造价.论文主要分析了住宅建筑施工图配合精装设计的控制要点及细节设计要点.

摘要：从农业技术产权交易市场信息不对称现象着眼,通过将不同类型农业技术使用者类比并结合实例,分析了各交易主体的行为逻辑,并在此基础上对不同类型农业技术使用者在逆向选择条件下交易价格契约的决定进行探讨,揭示了不同类型农业技术使用者交易价格契约的设计与选择,最后从逆向选择角度对农业技术产权交易市场的发展提出一些可操作性的建议。

摘要：新型电致化学发光分析仪可以应用在实验室条件下的药物分析、发光材料等一类电化学发光的检测实验中.系统地介绍了电致化学发光分析仪的设计和研制过程,包括仪器原理、设计框图、具体实现方案、主要技术难点和创新点.仪器具有灵敏度高、双检测位置、四样品通道、三维图形显示等特点.

摘要：为进一步丰富美味牛肝菌的加工产品类型,提高原料利用率和加工附加值,实现牛肝菌资源的综合利用,本论文以美味牛肝菌的残次菇、杀青水等加工副产物为主要原料,添加食盐、胡椒粉等辅料研制美味牛肝菌风味沙拉酱。对影响沙拉酱产品质量、风味的主要因素进行了单因素和正交实验优化。以感官评分为指标,最终确定了美味牛肝菌风味沙拉酱的最佳配方为:蛋黄酱200 g,美味牛肝菌粉33.3 g,美味牛肝菌酶解液15 g,美味牛肝菌杀青水浓缩液15 g,食盐4 g,黑胡椒粉1.3 g。应用该配方加工的沙拉酱,味道鲜美、组织细腻,整体品质最佳。

摘要：针对现有轨迹跟踪控制方法较难兼顾控制精度与稳定性的问题,提出一种基于Udwadia-Kalaba(U-K)控制理论的鲁棒控制方法。基于拉格朗日法建立机器人动力学模型,将动力学参数分为确定的名义部分与不确定部分;结合U-K理论与系统名义部分参数确定外骨骼机器人系统理想运动轨迹约束下的名义部分控制力矩;为消除机器人系统不确定部分的影响,引入鲁棒控制器,通过划分不确定性边界确定其应输出的额外控制力矩。仿真结果表明:相较于传统PID算法,基于U-K控制理论的鲁棒控制的外骨骼机器人髋关节、膝关节角度的轨迹跟踪控制精度分别提高了76.4%和96.8%。基于设计的下肢外骨骼机器人样机进行轨迹跟踪对比实验,实验结果表明:基于该方法的下肢外骨骼髋关节、膝关节角度的轨迹跟踪精度为0.467 0°和0.114 1°,相比作为对照的PID算法,分别提高了82.6%和86.8%,同时系统整体控制周期缩短了56.6%,该控制方法具有更高的同步性、控制精度与稳定性。

摘要：Although computer technologies have greatly advanced in recent years and help engineers improve work efficiency,the heating,ventilation,and air conditioning(HVAC)design process is still very *** this paper,we propose a conceptual framework for automating the entire design process to replace current human-based HVAC design *** framework includes the following automated processes:building information modeling(BIM)simplification,building energy modeling(BEM)generation&load calculation,HVAC system topology generation&equipment sizing,and system diagram *** this study,we analyze the importance of each process and possible ways to implement them using ***,we use a case study to test the automated design procedure and illustrate the feasibility of the new automated design *** purpose of this study is to simplify the steps in the traditional rule-based HVAC system design process by introducing artificial intelligence(Al)technology based on the traditional computer-aided design(CAD)*** results show that the automatic processes are feasible,compared with the traditional design process can effectively shorten the design time from 23.37 working hours to nearly 1 hour,and improve the efficiency.

摘要：针对某电驱总成异响问题,运用AltairOptiStruct软件进行声学分析及结构优化。首先建立自由场下声学分析模型,确定NVH问题产生的原因是电机控制器上盖的模态频率较低造成电机控制器与电驱系统的共振频率耦合。然后通过增加质量块等方式进行控制器结构优化。最后,通过试验验证有效性。验证结果表明:优化后的结构可以有效降低部分频率下的噪声,优化后的电机控制器NVH性能满足设计要求,顺利通过NVH试验。

摘要：为提高机组调峰性能、增加电厂营业收入,提出基于固体氧化物电解槽(SOEC)电解制氢技术的火电极限深度调峰系统,并设计了能效优先与成本优先的两套方案。利用Aspen HYSYS软件对单级余热加热器和双级余热加热器方案进行仿真计算,结果表明,双级余热加热器方案能效为43.8%,仅超单级方案0.4%,但单级方案在改造及运维成本上具有更大优势,因此综合性能最优。基于单级余热加热器方案开展火电机组成本效益分析,结果表明,氢储能火电调峰系统投用后,最多可为机组增加调峰收益1.67万元/小时,增加售氢、售氧收益70万元/小时,机组燃煤成本为10.7万元/小时,故新系统净收益为60.97万元/小时。

摘要：AIM:To evaluate the application of anterior segmentoptical coherence tomography(AS-OCT)in posterior capsule opacification(PCO)severity assessment and analyse the relationship between PCO severity and intraocular lens(IOL)***:PCO patients were prospectively ***-sectional images of the anterior segment at horizontal and vertical meridians were acquired with *** area of the IOL-PC(posterior capsular)space and PCO severity(area,thickness,and density at 3 mm and 5 mm IOL optic regions)were *** relationship between PCO severity and visual acuity,comparisons of PCO severity and IOL-PC space using varied IOL designs were ***:One hundred PCO eyes were ***-PC space,PCO thickness and area were positively correlated with axial *** addition,PCO area and thickness were positively correlated with visual acuity when it was≤0.52 log *** cut-off level of visual acuity should be 0.52 log *** varied IOL designs,3-piece C haptic IOL showed a smaller PCO area and thickness than the 1-piece 3 haptic IOL and 1-piece 4 haptic *** area and thickness values for an IOL with a diameter≤11.0 mm was greater than for an IOL with a diameter of 12.5 mm,and the differences were statistically *** area and thickness increased when IOL haptic angulation increased(from 0 to 12 degrees).CONCLUSION:In PCO eyes,cut-off level of visual acuity is 0.52 log *** more severe PCO,visual acuity maybenot enough to describe the visual function *** severity and IOL-PC space are significantly correlated with axial length and IOL design and material.