• Title/Summary/Keyword: grasping system

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Design and PID Control of Myoelectronic Hand considering Human Vibration (인체진동을 고려한 다관절 전동의수의 설계와 PID제어)

  • 장대진;김명회;양현석;백윤수;박영필
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.05a
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    • pp.746-751
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    • 2002
  • This purpose of this study was to design the effect of recovering of a hand amputees by myoelectronic hand. It was designed with 2 degree of freedom in tile laboratory. Myoelectronic hand had only one degree of freedom and one movement until now. Also this myoelectronic hand had multi-joint system. Myoelectronic hand data was obtained by measuring hand and data was applied when it was designed myoelectronic hand. PID controll of myoelectronic hand was used to it. Displacement control was applied the first link of finger. Experiment was accomlkished in Tip grasp, power grasp and Hook grasp modes. Displacement controll was good in low frequency. Velocity control was applied to each mode. This myoelectronic hand with a hand amputees could do some jobs such as grasping materials. Further studies were needed to evaluate the effect of a myoelectronic hand with more precise laboratory equipment.

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A Study on the Use of MTM CAD Program for Mass Customization of Men′s Suit (남성정장의 대량맞춤생산을 위한 MTM CAD시스템 활용실태연구)

  • 천종숙;임호선
    • The Research Journal of the Costume Culture
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    • v.11 no.5
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    • pp.647-656
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    • 2003
  • Mass customization utilizes the new computer technologies, supply chain management, product information management, and some level of customization of the product for the individual customer. This study aimed at grasping the actual conditions of mass customization of domestic men's suit industry and the use of MTM CAD program. The MTM apparel production programs that are used by five leading men's suit manufacturers in Korea were compared. The results of the study showed that most of the manufacturers produced mass customized men's suits to supply extraordinarily large or small size suit based on the individual order. The information listed on an order sheet used at shops was not necessarily corresponding to the information in the MTM CAD program that is use for production of suit ordered from the shop. The pattern data base on the MTM CAD program are constructed based on the sizing system of individual manufacturer. The most manufacturers translated the customer's body dimensions into difference between the standard pattern and the customer's needed adjustment.

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A Study on Pylon Cable Anchor System in Cable-Stayed Railway Bridge (철도용 사장교의 주탑 케이블 정착부에 관한 연구)

  • Han, Sung-Gwan;Gong, Byung-Seung
    • Proceedings of the KSR Conference
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    • 2006.11b
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    • pp.565-580
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    • 2006
  • Set in constant increase and period current of lively technical development of railroad use and construction of cable stayed bridge railway bridge, one of bridge form of most suitable that think side police officer and the material enemy of bridge that use long rail, is increasing laying stress on the foreign countries. Main tower fixing department of this cable stayed bridge is consisted of main tower flange that support bearing plate, bay ring plate bearing plate, support end rib and diaphragm etc, as stress transmission mechanic that tensility of cable socket into normal force of main tower, and is used this time. These structural elements is very complex the structure and direction of load delivered from socket specially calbe particularly be different, and need FEM analysis that use Thick Shell element for suitable arrangement of mutual stress flowing grasping and absence that follow hereupon because all of the each support plate angle that suport this differ.

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A Study On Slippage Sensing Algorithm of Manipulator for An Adaptive Control (적응제어를 위한 Manipulator의 미끄럼 감지 알고리즘에 관한 연구)

  • 이영재
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.2 no.3
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    • pp.303-308
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    • 1998
  • As the technology of industrial automation using robot system grows the rapid advance, productivity improvement and decrease in number of maintenance, management occur in many fields. Therefore, more various and intelligent robot motions are needed without human being help. Considering this situation, the need of robot with various, fast and safe acting sensors are demanded. In these sensings, the slippage sensing gives us specific information between ripper and object while grasps the object. In this paper, we proposed new slippage sensing algorithm for various and intelligent robot motion. So, optimal grasping force control and compensation of position error is possible for an adaptive task execution using adaptive control.

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Design of control algorism for 2 DOF myoelectric hand prosthesis (2자유도 전동의수의 제어알고리즘 설계)

  • Choi, Gi-Won;Choe, Gyu-Ha;Kim, Hong-Sung;Shin, Woo-Seok
    • Proceedings of the KIPE Conference
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    • 2007.07a
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    • pp.250-252
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    • 2007
  • In this paper presents a control algorism for myoelectric hand prosthesis(MHP) with 2 degree of freedom(DOF), which consists of a mechanical hand, a surface myoelectric sensor(SMES) for measuring myoelectric signal, a control system and a charging battery. The actuation for the 2-DOF hand functions such as grasping and wrist rotation was performed by two DC-motors, and controlled by myoelectric signal measured from the residual forearm muscle. The two controllers were made of a RISC-type microprocessor, and its software was executed on a real-time kernel. The experimental results were showed that the proposed a control algorism is feasible for the MHP.

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A Study on the Improvement in Image of Police Box (파출소 이미지 개선에 관한 연구)

  • 이정림
    • Korean Institute of Interior Design Journal
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    • no.9
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    • pp.116-126
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    • 1996
  • Modern society has achieved rapid growth in economy and materials whereas it caused such problems as municipal extension and high density of population, Due to rapid change of social environment, it became more complicated and multifarious than ever it before. Helping the people all kinds of routine affairs police box is giving a negative image to the citizens, for its environment doesn't have got rid of its old fashion . It's being an unharmonious factor to its surroundings, a solution is needed. So, this study is focused on recognizing the change of value system with the flow of time, planning a new image of police box for the change and in consequence recovering the trustworthy between people and the nation. For this , by grasping the characteristics of each space and through space-dividing and design corresponding to it, the plan is provided to make a pleasant interior environment of police box and to make it a symbol of local society. As a result of this study, we will have the police box not only as an office providing the locals with security and service but also as eyes of the country which watches the municipal environment.

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Transfer Path Analysis of Output Noise Using Multi-dimensional Spectral Analysis Method for Vacuum Cleaner (다차원 스펙트럼 해석법을 이용한 진공청소기 출력소음의 전달경로 해석)

  • Jeong, Jae-Eun;Lee, Jung-Hwan;Chung, Chang-Ook;Hwang, Geun-Bae;Oh, Jae-Eung
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.20 no.10
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    • pp.940-945
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    • 2010
  • Noise reduction of vacuum cleaner is important, according as get into standard that estimate quality of product. To reduce noise of vacuum cleaner, we need analysis of correct noise source and contribution grasping about Identified noise sources' output noise. Because noise sources' correlation exists in vacuum cleaner that is small and complicated system, analysis is not easy. In this case, we need to apply Multi-dimensional spectral analysis(MDSA) method that can remove correlation between noise sources and grasp pure contribution degree of noise sources. In this study, we take transfer path analysis between output noise and noise that measured in inside/outside of vacuum cleaner.

A Study on Real Time Control of Moving Stuff Action Through Iterative Learning for Mobile-Manipulator System

  • Kim, Sang-Hyun;Kim, Du-Beum;Kim, Hui-Jin;Im, O-Duck;Han, Sung-Hyun
    • Journal of the Korean Society of Industry Convergence
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    • v.22 no.4
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    • pp.415-425
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    • 2019
  • This study proposes a new approach to control Moving Stuff Action Through Iterative Learning robot with dual arm for smart factory. When robot moves object with dual arm, not only position of each hand but also contact force at surface of an object should be considered. However, it is not easy to determine every parameters for planning trajectory of the an object and grasping object concerning about variety compliant environment. On the other hand, human knows how to move an object gracefully by using eyes and feel of hands which means that robot could learn position and force from human demonstration so that robot can use learned task at variety case. This paper suggest a way how to learn dynamic equation which concern about both of position and path.

Detection of unauthorized person using AI-based clothing information analysis (AI기반 의류정보를 이용한 비인가 접근감지)

  • Shin, Seong Yoon;Lee, Hyun Chang
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2019.07a
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    • pp.381-382
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    • 2019
  • Recently, various search techniques using artificial intelligence techniques have been introduced. It is also possible to use the artificial intelligence to grasp customer propensity. Analyzing the clothes that customers usually wear, it is possible to analyze various colors such as favorite colors, patterns, and fashion styles. In this study, we use artificial intelligence technology to create an application that distinguish between adults and children by combining various factors such as shape, type, color and size of human clothes. Through this, it will be possible to utilize it in a living area where children can be protected in advance by grasping the intrusion of unauthorized adults in the living area where children live mainly. In addition, in the future, we can obtain good results to detect stranger adult person if we apply this experimental result to the detection system using clothing information.

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Feasibility Prediction-Based Obstacle Removal Planning and Contactable Disinfection Robot System for Surface Disinfection in an Untidy Environment (비정돈 환경의 표면 소독을 위한 실현성 예측 기반의 장애물 제거 계획법 및 접촉식 방역 로봇 시스템)

  • Kang, Junsu;Yi, Inje;Chung, Wan Kyun;Kim, Keehoon
    • The Journal of Korea Robotics Society
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    • v.16 no.3
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    • pp.283-290
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    • 2021
  • We propose a task and motion planning algorithm for clearing obstacles and wiping surfaces, which is essential for surface disinfection during the pathogen disinfection process. The proposed task and motion planning algorithm determines task parameters such as grasping pose and placement location during the planning process without using pre-specified or discretized values. Furthermore, to quickly inspect many unit motions, we propose a motion feasibility prediction algorithm consisting of collision checking and an SVM model for inverse mechanics and self-collision prediction. Planning time analysis shows that the feasibility prediction algorithm can significantly increase the planning speed and success rates in situations with multiple obstacles. Finally, we implemented a hierarchical control scheme to enable wiping motion while following a planner-generated joint trajectory. We verified our planning and control framework by conducted an obstacle-clearing and surface wiping experiment in a simulated disinfection environment.