• Title/Summary/Keyword: peg board

Search Result 11, Processing Time 0.019 seconds

Development of Force/Torque Sensor and Compliance Algorithm for Assembly Robots (조립용 로보트의 힘.토오크 센서 및 컴플라이언스 알고리즘의 개발)

  • Ko, Nak-Yong;Ko, Myoung-Sam;Ha, In-Joong;Lee, Bum-Hee
    • Proceedings of the KIEE Conference
    • /
    • 1987.07a
    • /
    • pp.244-248
    • /
    • 1987
  • The force/torque sensor for robot is developed. The compliance algorithm for peg-in-hole insertion task using the forec/troque sensor is developed. The system consists of an IBM PC, robot, force/torque sensor, strain meter, A/D board, and interface board. The IBM PC functions as a main processor and the robot controller as a slave processor. The sensor is constructed to measure $T_x$, $T_y$, $F_z$ which are necessary to precisely execute a peg-in-hole insertion task by SCARA type assembly robot. The outputs of sensor are analyzed. On the basis of the analysis, compliance algorithm for peg-in-hole insertion task is developed. Some comments concerning the development of wrist force/torque sensor and compliance algorithm are given.

  • PDF

Transfer Rate of Cross Contamination of Listeria monocytogenes between Pork Meat and Workers' Hands during Pork Meat Processing (포장돈육 가공공정 중 돈육과 작업자 손과의 Listeria monocytogenes의 교차오염 전이율)

  • Kim, Seong-Jo;Park, Myoung-Su;Bahk, Gyung-Kin;Rahman, S.M.E.;Park, Joong-Hyun;Oh, Deog-Hwan
    • Journal of Food Hygiene and Safety
    • /
    • v.26 no.4
    • /
    • pp.330-335
    • /
    • 2011
  • This study was performed to determine the transfer rates of each foodborne pathogen from pork meat packaging during the processing. We analyzed the transfer rate of Listeria monocytogenes from contaminated pork meat to worker's hands (wearing polyethylene gloves, PEG; cotton gloves, CG; and bare hands), cutting boards and knives, and vice versa. Transfer rate of CG 100.00% was higher than that of bare hands 2.513% and PEG 1.511%. In particular, when wearing Co, the transfer rate from the CG to bare hands with CG was 0.08%. Also, the range of transfer rates from contaminated pork meat to cutting board and knife was 0.352-3.791%. In contrast, transfer rates from the workers' hands (with PEG/CG and bare hands) to cutting board, knife, and pork meat ranged from 0.001 to 0.141%. There was a lower transfer rate from workers' hands than from pork meat. These findings indicate that use of PEG could effectively reduce or prevent the cross-contamination compared to CG and provide important information concerning the consecutive transfer of L. monocytogenes during food processing.

Development of a Direct Drive Scara Robot Manipulator and PC-Based Preliminary Force/Motion Control (직접구동식 스카라 로봇의 개발 및 개인용 컴퓨터를 이용한 기초 힘/운동 제어)

  • Kim, D.H.;Park, D.Y.;Park, H.S.
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.12 no.10
    • /
    • pp.25-31
    • /
    • 1995
  • In this paper, a direct drive scalar robot manipulator is constructed and its mechanical machanism for operation is explained. Also, a motion controller board for the direct drive robot manipulator was developed where the IBM 486 computer is the main controller. For the developed direct drive robot, a force/motion control algorithm based on an active compliance scheme is developed. A preliminary experiment using the developed direct drive for a peg-in-hole job was done by implementing the control algorithm.

  • PDF

A study on the Additive Decomposition Generated during the Via-Filling Process (Via-Filling 공정시 발생하는 첨가제 분해에 관한 연구)

  • Lee, Min Hyeong;Cho, Jin Ki
    • Journal of the Korean institute of surface engineering
    • /
    • v.46 no.4
    • /
    • pp.153-157
    • /
    • 2013
  • The defect like the void or seam is frequently generated in the PCB (Printed Circuit Board) Via-Filling plating inside via hole. The organic additives including the accelerating agent, inhibitor, leveler, and etc. are needed for the copper Via-Filling plating without this defect for the plating bath. However, the decomposition of the organic additive reduces the lifetime of the plating bath during the plating process, or it becomes the factor reducing the reliability of the Via-Filling. In this paper, the interaction of each organic additives and the decomposition of additive were discussed. As to the accelerating agent, the bis (3-sulfopropyl) disulfide (SPS) and leveler the Janus Green B (JGB) and inhibitor used the polyethlylene glycol 8000 (PEG). The research on the interaction of the organic additives and decomposition implemented in the galvanostat method. The additive decomposition time was confirmed in the plating process from 0 Ah/l (AmpereHour/ liter) to 100 Ah/l with the potential change.

Automated Pegboard Utilizing RFID System with Multiple Reader Antennas

  • Choi, Hyun-Ho;Ryu, Mun-Ho;Yang, Yoon-Seok;Shin, Yong-Il;Kim, Nam-Gyun
    • Journal of Biomedical Engineering Research
    • /
    • v.28 no.5
    • /
    • pp.585-589
    • /
    • 2007
  • This study proposes an automated pegboard utilizing the RFID system with multiple reader antennas for the rehabilitation services and the occupational therapy. The system automates the scoring by detecting the plugging correctness as well as the plugging status. It also aims to increase the patient's interest and the functional intelligence. The system was prototyped and tested for the automatic capability of the scoring the session time and success rate. The proposed system will be served as the typical example for the ubiquitous rehabilitation devices.

Effects of Chloride Ion on Accelerator and Inhibitor during the Electrolytic Cu Via-Filling Plating (전해 Cu Via-Filling 도금에서 염소이온이 가속제와 억제제에 미치는 영향)

  • Yu, Hyun-Chul;Cho, Jin-Ki
    • Journal of the Korean institute of surface engineering
    • /
    • v.46 no.4
    • /
    • pp.158-161
    • /
    • 2013
  • Recently, the weight reduction and miniaturization of the electronics have placed great emphasis. The miniaturization of PCB (Printed Circuit Board) as main component among the electronic components has also become progressed. The use of acid copper plating process for Via-Filling effectively forms interlayer connection in build-up PCBs with high-density interconnections. However, in the case of copper-via filled in a bath, which is greatly dependent on the effects of additives. This paper discusses effects of Cl ion on the filling of PCB vias with electrodeposited copper based on both electrochemical experiment and practical observation of cross sections of vias.

Pegboard Evaluation Automation Utilizing RFID System for Telerehabilitation (원격재활을 위한 RFID를 이용한 페그보드 평가 자동화)

  • Choi, Hyun-Ho;Yang, Yoon-Seok;Kim, Jung-Ja;Kim, Nam-Gyun;Ryu, Moon-Ho
    • Journal of Institute of Control, Robotics and Systems
    • /
    • v.13 no.12
    • /
    • pp.1192-1197
    • /
    • 2007
  • This study proposes an automated pegboard utilizing the RFID system with multiple reader antennas for the rehabilitation services and the occupational therapy. The system automates the scoring by detecting the plugging correctness as well as the plugging status. It also aims to increase the patient's interest and the functional intelligence. The system was prototyped and the RFID read rate (over 99.998%) was confirmed. The system was also tested for the automatic capability of the scoring the session. The proposed system will be served as the typical example for the ubiquitous rehabilitation devices.

Saudi Experts Consensus on Diagnosis and Management of Pediatric Functional Constipation

  • Alshehri, Dhafer B.;Sindi, Haifa Hasan;AlMusalami, Ibrahim Mohamod;Rozi, Ibrahim Hosamuddin;Shagrani, Mohamed;Kamal, Naglaa M.;Alahmadi, Najat Saeid;Alfuraikh, Samia Saud;Vandenplas, Yvan
    • Pediatric Gastroenterology, Hepatology & Nutrition
    • /
    • v.25 no.3
    • /
    • pp.163-179
    • /
    • 2022
  • Although functional gastrointestinal disorders (FGIDs) are very common in pediatric patients, there is a scarcity of published epidemiologic data, characteristics, and management patterns from Saudi Arabia, which is the 2nd largest Arabic country in terms of area and the 6th largest Arabic country in terms of population, with 10% of its population aged <5 years. Functional constipation (FC) is an FGID that has shown a rising prevalence among Saudi infants and children in the last few years, which urges us to update our clinical practices. Nine pediatric consultants attended two advisory board meetings to discuss and address current challenges, provide solutions, and reach a Saudi national consensus for the management of pediatric constipation. The pediatric consultants agreed that pediatricians should pay attention to any alarming signs (red flags) found during history taking or physical examinations. They also agreed that the Rome IV criteria are the gold standard for the diagnosis of pediatric FC. Different therapeutic options are available for pediatric patients with FC. Dietary treatment is recommended for infants with constipation for up to six months of age. When non-pharmacological interventions fail to improve FC symptoms, pharmacological treatment with laxatives is indicated. First, the treatment is aimed at disimpaction to remove fecal masses. This is achieved by administering a high dose of oral polyethylene glycol (PEG) or lactulose for a few days. Subsequently, maintenance therapy with PEG should be initiated to prevent the re-accumulation of feces. In addition to PEG, several other options may be used, such as Mg-rich formulas or stimulant laxatives. However, rectal enemas and suppositories are usually reserved for cases that require acute pain relief. In contrast, infant formulas that contain prebiotics or probiotics have not been shown to be effective in infant constipation, while the use of partially hydrolyzed formula is inconclusive. These clinical practice recommendations are intended to be adopted by pediatricians and primary care physicians across Saudi Arabia.

Effect of Robot-Assisted Hand Rehabilitation on Hand Function in Chronic Stroke Patients (손 재활 로봇의 적용이 만성 뇌졸중 환자의 손 기능 향상에 미치는 영향)

  • Park, Jin-Hyuck
    • The Journal of Korea Robotics Society
    • /
    • v.8 no.4
    • /
    • pp.273-282
    • /
    • 2013
  • The purpose of this study was to investigate effect of robot-assisted hand rehabilitation(Amadeo(R)) on hand motor function in chronic stroke patients. This study used a single-subject experimental design with multiple baselines across individuals. Three chronic stroke survivors with mild to sever motor impairment took part in study. Each participants had 2 weeks interval of starting intervention. Participants received robot-assisted therapy(45min/session. 3session/wk for 6wks). Finger active range of motion(AROM) was assessed by Range of Assessment program in Amadeo(R), and test-retest reliability was verified using Pearson correlation analysis. To investigate effect of Amadeo(R), finger AROM was measured immediately after each sessions and Fugl-Meyer Assessment of Upper extremity, Motor Activity Log, Nine hole peg board test and Jebsen-Taylor hand motor function test were assessed at pre-post intervention. Results were analyzed by visual analysis and comparison of pre-post tests. The test-retest reliability of Range of Assessment was good(r=.99). After robot-assisted therapy, finger AROM of participant 1, 2, and 3 was respectively improved by 18%, 3.6%, and 6% each. Hand motor function of participant 1, 3 was improved on all four tests, but not effect in participant 2. Robot-assisted hand rehabilitation could improve finger AROM and effect on hand motor function in chronic stroke patients.

A Design of Acoustic-based Underwater Image Transmission System Based on the Multipath Analysis. (Multipath를 고려한 수중영상 전송 시스템 설계)

  • 임용곤;박종원;최영철
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.5 no.1
    • /
    • pp.202-211
    • /
    • 2001
  • This paper deals with an analysis of multipath which affect a transmission performance in underwater acoustic channel. Underwater acoustic channel with multipath structure is introduced to mathematical modelling for a basin environment. In this paper, SMR(Signal to Multipath Ratio) which is defined as a parameter of multipath's effect is presented as a mathematical equation, and the equation of SMR is simulated by MATLAB program. Furthermore, this paper is also dealt with an implementation of modulation and demodulation system for acoustic transmission. Acoustic Transmission is limited by frequency bandwidth, so $\pi/4 QPSK$(Quadrature Phase Shift Keying) methods which is very useful at frequency ]imitation and FM(Frequency Modulation) are used at acoustic communication system. This implemented hybrid modulation/demodulation system is used as an analog board of image transmission system. In this system, adaptive equalization for reducing the multipath effect and baseline JPEG used for an image compressing are also stated.

  • PDF