Journal of Micromechatronics最新文献_第4页

Microbiochemical reactors for enzymatic reactions including cell-free mRNA translation 用于酶促反应的微生化反应器，包括无细胞mRNA翻译

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856300744687

T. Fujii, S. Shoji, T. Nojima, A. Yotsumoto, K. Hosokawa, I. Endo

引用次数: 5

Study on an injection quantity sensor. I: Evaluation of the integration procedure 一种注射量传感器的研究。1:对整合程序的评价

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856305323383892

Seidel, Schmid

{"title":"Study on an injection quantity sensor. I: Evaluation of the integration procedure","authors":"Seidel, Schmid","doi":"10.1163/156856305323383892","DOIUrl":"https://doi.org/10.1163/156856305323383892","url":null,"abstract":"For 'on board' diagnosis purposes of the injected fuel quantity, ceramic flow sensor chips with a diameter of 2.2 mm were integrated into finished Common Rail injection nozzles of the valve covered orifice (VCO) or mini-sac hole (MSH) class. The influence of this integration step on the hydraulic performance of the high-precision injector nozzles which led to an optimized process flow with a minimized disturbance of the fluidic properties was investigated. Electron-discharge machining and electron-beam welding technology proved to be the key technologies for this integration process, providing a reliable solution for injection pressures ranging up to 135 MPa (1350 bar). With a high-pressure hydraulic test bench the decrease in the injected fuel quantity as a function of welding parameters was determined for both nozzle classes. The geometrical distortion of the nozzle was mainly attributed to a radial bending of the nozzle tip and is dominated by the heat concentration during the welding process. In comparison, the integration of the ceramic sensor chip causes lower distortion values. By reducing the thermal energy input during welding a negligible influence of the complete integration process with respect to the hydraulic performance of original orifices is demonstrated at MSH injection nozzles.","PeriodicalId":150257,"journal":{"name":"Journal of Micromechatronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123862034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Real-time object tracking for the robot-based nanohandling in a scanning electron microscope 扫描电子显微镜下机器人纳米处理的实时目标跟踪

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856306777924644

S. Fatikow, T. Sievers

{"title":"Real-time object tracking for the robot-based nanohandling in a scanning electron microscope","authors":"S. Fatikow, T. Sievers","doi":"10.1163/156856306777924644","DOIUrl":"https://doi.org/10.1163/156856306777924644","url":null,"abstract":"In this paper, current research work on an automated nanohandling station using mobile microrobots is presented. For the automated positioning of mobile microrobots a closed-loop control system is necessary, usually using data from pose sensors for the degrees of freedom (DOF) of the microrobot are needed. Mobile microrobots with piezo slip-stick actuation mostly do not have internal pose sensors to determine a global pose. This paper focuses on the continuous pose estimation (tracking) of mobile microrobots by external visual sensors. One possibility for fast pose estimation is the application of video cameras in combination with image processing algorithms as global sensors. However, for pose estimation with accuracy in the nanometer range high-resolution sensors are necessary. In consideration of resolution, image acquisition time and depth of focus a scanning electron microscope (SEM) is a powerful sensor for high-resolution pose estimation of a microrobot. On the other hand, the use of a SEM requires high demands on the image processing. High update rates of the pose data for the robot control require a short image acquisition time of the SEM images. As a result, the image noise increases as frame averaging or averaging of the detector signal is time consuming. This paper presents two approaches to tracking a micro-object in a SEM image stream. First, a cross-correlation algorithm is described, which enables pose estimation (x, y, ϕ) in extremely noised images in real-time. Afterwards object tracking with active contours is presented. This approach allows real-time tracking with more than 3 DOF by using shape spaces, instead of defining large model sets as it is necessary for correlation-based pattern matching.","PeriodicalId":150257,"journal":{"name":"Journal of Micromechatronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123222442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 76

Micro-motion selective-actuation X Y Z flexure parallel mechanism: design and modeling 微动选择性驱动X Y Z挠性并联机构:设计与建模

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856305323383919

H. Pham, I. Chen, H. Yeh

引用次数: 19

Design of a flexible conveyer microrobot with electromagnetic field-based friction drive control for microfactory stations 基于电磁场摩擦驱动控制的微型工厂工位柔性输送机器人设计

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856300744669

Antoine Ferreira

引用次数: 9

Integrated micromachined components for biological analysis systems 用于生物分析系统的集成微机械组件

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856300744678

A. B. Frazier, I. Papautsky, B. Gale, K. Caldwell

引用次数: 1

Fascination of down scaling — Alice the sugar cube robot 缩小比例的魅力——方糖机器人爱丽丝

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856301760132097

G. Caprari, T. Estier, R. Siegwart

引用次数: 44

Networked human/robot cooperative environment for tele-assembly of MEMS devices 面向MEMS器件远程装配的网络化人机协作环境

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856306777924626

Yantao Shen, N. Xi, Bo Song, W. Li, C. Pomeroy

{"title":"Networked human/robot cooperative environment for tele-assembly of MEMS devices","authors":"Yantao Shen, N. Xi, Bo Song, W. Li, C. Pomeroy","doi":"10.1163/156856306777924626","DOIUrl":"https://doi.org/10.1163/156856306777924626","url":null,"abstract":"The objective of this paper is to develop a networked cooperative environment to achieve human/robot cooperation for reliable and dependable remote microassembly. At a microscale, surface adhesion forces, such as van der Waals, surface tension and electrostatic forces, become stronger than the downward gravitational force. For a reliable and dependable tele-microassembly, it is absolutely necessary to allow close monitoring of the magnitude and direction of those micro-forces interacting with microdevices during the assembly process. In this paper, based on integrating an in situ polyvinylidene fluoride piezoelectric micro-force sensing tool with a resolution in the range of μN, and using event-synchronization for the feedback of assembly video and micro-force, the developed networked human/robot cooperative platform can greatly advance applications in tele-microassembly. As a result, the reliable and dependable human/robot cooperative assembly operations can be achieved and extended to the single or multiple remote work-cells through a local area network or the Internet. This platform has been used successfully to perform a remote assembly of surface MEMS structures with the event-synchronized micro-force/visual feedback via the Internet between USA and Hong Kong.","PeriodicalId":150257,"journal":{"name":"Journal of Micromechatronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126988749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Design and control of a pneumatic microrobot for in-pipe inspection of nuclear pipes 核能管道内检测气动微型机器人的设计与控制

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856301753398172

M. Bétemps, C. Anthierens

引用次数: 6

Automatic dextrous microhandling based on a 6-DOF microgripper 基于六自由度微夹持器的自动灵巧微处理

Journal of Micromechatronics Pub Date : 1900-01-01 DOI: 10.1163/156856306777924662

Quan Zhou, P. Korhonen, J. Laitinen, S. Sjövall

引用次数: 39