Reducing set-up times for improved flexibility in high-mix low-volume electric drives production

2011 ◽  
Author(s):  
Ronny Fritsche
Keyword(s):  
Electric Drives ◽  
Low Volume ◽  
Set Up

Development of First Production Flaw Detecting System for On-Demand Repair of Large-Scale Circuit

2015 ◽  
Vol 9 (5) ◽  
pp. 487-493
Author(s):  
Ichiro Ogura ◽  
◽  
Kiwamu Ashida ◽  
Jun Akedo
Keyword(s):  
Basic Concept ◽  
Large Scale ◽  
Touch Panel ◽  
Performance Requirements ◽  
Profile Height ◽  
Volume Production ◽  
Jet Printing ◽  
Low Volume ◽  
Set Up ◽  
Nanoparticle Ink

To realize an efficient high-mix low-volume production, improving the yield rate by reducing production flaws is an important technique. Manufacturing touch panel displays with large-scale wiring boards is a typical example of the high-mix low-volume production. The National Institute of Advanced Industrial Science and Technology (AIST) has proposed a laser assisted ink-jet printing (LIJ) technology, which can repair the flaws of circuits by a silver nanoparticle ink. To establish an in-process repairing system for a touch panel display, a first production flaw detecting system is necessary in combination with LIJ technology. Therefore, the aim of this study is to develop a new first production flaw detecting system, which detects flaws in a large-scale circuit quickly. In this report, we have covered the basic concept of the proposed system, and the details of some preliminary experiments conducted using the developed measurement system. The performance requirements for the first production flaw detecting system are discussed. The basic concept of the detecting system and optical set-up was finalized. A preliminary first production flaw detecting system with galvano-scanner and multi-photodiode array was developed to confirm its ability to detect flaws and pattern profile. Some basic experiments were conducted to check the performance of this system. A flaw was intentionally created by making a scratch on a circuit pattern; the experimental results showed that this flaw could be detected by the equipment. The height detection technique for this system and preliminary experiments conducted using the developed system are also covered in this report. By using the laser trigonometry method, the displacement of profile height was detected with sufficient accuracy.

High COD wastewater treatment in an aerobic SBR: treatment of effluent from a small farm goat's cheese dairy

2004 ◽  
Vol 50 (10) ◽  
pp. 259-267 ◽  
Author(s):  
M. Torrijos ◽  
Ph. Sousbie ◽  
R. Moletta ◽  
J.-P. Delgenes
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Excess Volume ◽  
Treated Wastewater ◽  
Small Farm ◽  
Excess Sludge ◽  
Excellent Quality ◽  
Low Volume ◽  
Set Up ◽  
High Level

In France, small goat's cheese dairies using traditional craft methods often have no profitable solution for dealing with the whey byproduct of their cheesemaking activity: it is usually mixed with the cleaning wastewater which, in the absence of other possibilities, is then discharged directly into the environment. The volume of such wastewater is small but it has a high COD of around 12-15 g/L. An aerobic SBR was proposed as a method for treating the mixture of wastewater and whey and the first installation was set up on a farm with 170 goats. Its operations were monitored for 7.5 months, particularly in order to measure any excess volume of sludge and to check that such excess remained within acceptable limits, given the high COD of the effluent requiring treatment. The results obtained show that the treated wastewater was of excellent quality, well within the most rigorous discharge norms. With this type of wastewater, excess sludge was produced in only very low amounts with 0.2 g of SS/g of COD. Moreover, the sludge proved to be quick settling which made it possible to: i) maintain a high level of SS in the reactor (up to 15 g/L); ii) withdraw sludge with concentrations reaching 30 g/L after 2 hours of settling. This resulted in a low volume of excess sludge (less than 5% of treated volume), making such aerobic biological treatment in an SBR competitive when compared to the straightforward spreading of all the wastewater.

scholarly journals Pesticide Spraying in Indian River Grapefruit: III. Opportunities for Improving Efficacy and Efficiency while Reducing Off-target Deposition

2004 ◽  
Vol 14 (4) ◽  
pp. 564-574 ◽  
Author(s):  
Ed Stover ◽  
Chris Wilson ◽  
Dominick Scotto ◽  
Masoud Salyani
Keyword(s):  
Expert System ◽  
Spray Deposition ◽  
Good Choice ◽  
Spray Parameters ◽  
Wind Speeds ◽  
Optimal Balance ◽  
Indian River ◽  
Low Volume ◽  
Set Up ◽  
The Cost

Parts I and II of this series revealed substantial opportunities for improving spraying of Indian River citrus (Citrus spp.). In this segment of our work we develop guidelines for growers to select the spray parameters providing an optimal balance between efficiency and efficacy while minimizing environmental contamination.It is proposed that these guidelines could be codified in a simple expert system to make them easier to use. We propose that understanding limiting conditions may be the key to choosing spray options. Wind is a major factor influencing spray deposition and offtarget drift. Based on weather records, wind speeds below 5 mph (8.0 km·h-1) are only routinely observed from 2000 HR until 0800 HR, making night spraying a good choice for low-volume applications. The importance of adjusting sprayer set-up for individual groves is demonstrated, with economic estimates of the cost of failing to make these adjustments. Routine use of careful sprayer adjustments is also likely to reduce off-target drift. Improvements in equipment and spray chemicals are also discussed. Use of non-orchard buffer areas and/or windbreaks appear to offer considerable opportunity for reducing off-site spray movement.

scholarly journals Performance Improvement of a Type of Turning Machines

2018 ◽  
Vol 3 (8) ◽  
pp. 44 ◽  
Author(s):  
Marin Milkov Zhilevski ◽  
Mikho Rachev Mikhov
Keyword(s):  
Computer Simulation ◽  
Performance Improvement ◽  
Experimental Research ◽  
Drive System ◽  
Program Control ◽  
Control Algorithms ◽  
Electric Drives ◽  
Respective Control ◽  
Set Up

The basic problems in modernization of a type of turning machines with digital program control are discussed in this paper. The main requirements for the drive system are analyzed and formulated. A number of models for computer simulation with various electric drives have been developed aiming at studying their dynamic and static regimes for the respective control algorithms. Some options for performance improvement of the respective drives are presented. The experimental research carried out confirms good performance of the applied solutions. The results of this study can be used in the design and set up of such driving systems.

scholarly journals Fast, reliable automation of protein crystallisation drop set-up

2014 ◽  
Vol 70 (a1) ◽  
pp. C1755-C1755
Author(s):  
Ben Schenker ◽  
Joby Jenkins ◽  
David Smith
Keyword(s):  
Structural Biology ◽  
Protein Crystallography ◽  
Cubic Phase ◽  
Rapid Progress ◽  
Hanging Drop ◽  
Lipidic Cubic Phase ◽  
Low Volume ◽  
Set Up ◽  
Instrument Configuration ◽  
Configuration Changes

The automation of protein crystallography screening has contributed significantly to the rapid progress of crystallography-based structural biology. Automation offers increased throughput and repeatability. It also offers the ability to accurately dispense smaller volumes of both protein and screen solutions, which saves valuable protein and reduces reagent costs. Automation of protein crystallisation screening trials requires accurate placement of nanoliter volumes of protein and screen drops, in addition to the reproducible and accurate dispensing of solutions of varying viscosities. This is particularly important for the set-up of the highly viscous lipid mesophases in the Lipidic Cubic Phase (LCP) crystallisation technique for membrane protein crystallisation trials. This poster describes the features of TTP Labtech's mosquito® Crystal and mosquito® LCP, showing their ability to address the issues inherent in the automated set-up of protein crystallisation screen trials. An instrument capable of automating both microbatch and vapour diffusion methods of protein crystallography (sitting drop, hanging drop) as well as crystallisation of membrane proteins using the bicelle and LCP methods, without instrument configuration changes, offers significant flexibility for the crystallography laboratory mosquito Crystal and mosquito LCP offer fast throughput, high precision, unrivalled reproducibility and low volume accuracy.

Laboratory set-up for instruction and research in electric drives control

1990 ◽  
Vol 5 (1) ◽  
pp. 331-337 ◽  
Author(s):  
T.C. Huang ◽  
M.A. El-Sharkawi ◽  
M. Chen
Keyword(s):  
Electric Drives ◽  
Set Up

scholarly journals A simple technique to reduce evaporation of crystallization droplets by using plate lids with apertures for adding liquids

2014 ◽  
Vol 70 (12) ◽  
pp. 1707-1713 ◽  
Author(s):  
Lauren E. Zipper ◽  
Xavier Aristide ◽  
Dylan P. Bishop ◽  
Ishita Joshi ◽  
Julia Kharzeev ◽  
...  
Keyword(s):  
Droplet Size ◽  
Simple Technique ◽  
X Ray Diffraction ◽  
X Ray ◽  
Air Movement ◽  
Design Changes ◽  
Crystallization Experiments ◽  
Low Volume ◽  
Set Up ◽  
Rate Of Evaporation

A method is described for using plate lids to reduce evaporation in low-volume vapor-diffusion crystallization experiments. The plate lids contain apertures through which the protein and precipitants were added to different crystallization microplates (the reservoir was filled before fitting the lids). Plate lids were designed for each of these commonly used crystallization microplates. This system minimizes the dehydration of crystallization droplets containing just a few nanolitres of protein and precipitant, and results in more reproducible diffraction from the crystals. For each lid design, changes in the weight of the plates were used to deduce the rate of evaporation under different conditions of temperature, air movement, droplet size and precipitant. For comparison, the state of dehydration was also visually assessed throughout the experiment. Finally, X-ray diffraction methods were used to compare the diffraction of protein crystals that were conventionally prepared against those that were prepared on plates with plate lids. The measurements revealed that the plate lids reduced the rate of evaporation by 63–82%. Crystals grown in 5 nl drops that were set up with plate lids diffracted to higher resolution than similar crystals from drops that were set up without plate lids. The results demonstrate that plate lids can be instrumental for improving few-nanolitre crystallizations.

An Electrohydrodynamic (EHD) Meso Pump for Cryogenic Spot Cooling of Low Volume Complex Electronics

2003 ◽  
Author(s):  
M. Rada ◽  
M. Ohadi ◽  
A. Shooshtari
Keyword(s):  
Numerical Modeling ◽  
Low Temperature ◽  
Temperature Variation ◽  
Liquid Nitrogen ◽  
Cooling System ◽  
Operating Conditions ◽  
Low Volume ◽  
Liquid Nitrogen Cooling ◽  
Spot Cooling ◽  
Set Up

Low temperature cooling provides excellent operating conditions for some conventional and superconducting electronics applications. The cooling requirements for these applications include moderate to low power levels (down to fraction of Watts) and very strict spatial and temporal temperature variation (in the order of 0.1K or less). In this paper, experimental and modeling results of a liquid nitrogen cooling system, using an EHD meso pump are presented. The pumping mechanism uses the EHD ion-drag technique. The experimental set-up, procedures and results are presented, followed by a pumping curve obtained by numerical modeling.

scholarly journals Simulation and analysis of improved direct torque control of switched reluctance machine

2020 ◽  
Vol 18 (1) ◽  
pp. 251
Author(s):  
Alexander Krasovsky
Keyword(s):  
Direct Torque Control ◽  
Electric Machines ◽  
Torque Control ◽  
Switched Reluctance ◽  
Electric Drives ◽  
Reluctance Machine ◽  
Switched Reluctance Machines ◽  
Powerful Approach ◽  
Set Up ◽  
Technical Solutions

<span>Direct torque control of electric machines widely used in modern electric drives. Switched reluctance machines (SRM) are different from traditional electric machines, so we cannot apply well-known technical solutions to them. Simulation can provide a powerful approach for investigating the control of switched reluctance machines, and Matlab / Simulink allows it successfully implemented. This paper presents a description of the model and the simulation results of the proposed new algorithms for direct control of the instantaneous torque of SRM in the motor and braking modes. In comparison with the known control algorithms, the proposed algorithm uses one common for all phases relay regulator with a smaller number of switching thresholds and, therefore, it has greater reliability and is easier to set up. </span>

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