• Title/Summary/Keyword: IAR

Search Result 44, Processing Time 0.028 seconds

Porting gcc Based eCos OS and PROFINET Communication Stack to IAR (gcc 기반 eCos 운영체제 및 PROFINET 통신 스택의 IAR 포팅 방법)

  • Jin Ho Kim
    • KIPS Transactions on Computer and Communication Systems
    • /
    • v.12 no.4
    • /
    • pp.127-134
    • /
    • 2023
  • This paper describes how to port the eCos operating system and PROFINET communication stack developed based on gcc to the IAR compiler. The eCos operating system provides basic functions such as multi-thread, TCP/IP, and device driver for PROFINET operation, so there is no need to change it when developing PROFINET applications. Therefore, in this study, we reuse an eCos library built with gcc and it link with PROFINET communication stack that are ported to IAR complier. Due to the different of the gcc and IAR linker, symbol definitions and address of the constructors should be changed using the external tool that generates symbol definitions and address of the constructors from MAP file. In order to verify the proposed method, it was confirmed that the actual I/O was operating normally through PROFINET IRT communication by connecting to the Siemens PLC. IAR compiler has better performance in both the compile time and the size of the generated binary. The proposed method in this study is expected to help port various open sources as well as eCos and PROFINET communication stacks to other compilers.

TENSILE BOND STRENGTH OF ALUNMINA CORE TREATED BY ION ASSISTED REACTION (이온보조반응법으로 처리한 알루미나 코아의 인장결합강도에 관한 연구)

  • Kim, Hyeong-Seob;Woo, Yi-Hyung;Kwon, Kung-Rock;Choi, Boo-Byung;Choi, Won-Kook
    • The Journal of Korean Academy of Prosthodontics
    • /
    • v.38 no.5
    • /
    • pp.704-723
    • /
    • 2000
  • This study was undertaken to evaluate the tensile bond strength of In-Ceram alumina core treat-ed by ion assisted reaction(IAR). Ion assisted reaction is a prospective surface modification technique without damage by a keV low energy ion beam irradiation in reactive gas environments or reactive ion itself. 120 In-Ceram specimens were fabricated according to manufacturer's directions and divided into six groups by surface treatment methods of In-Ceram alumina core. SD group(control group): sandblasting SL group: sandblasting + silane treatment SC group: sandblasting + Siloc treatment IAR I group: sandblasting + Ion assisted reaction with argon ion and oxygen gas IAR II group: sandblasting + Ion assisted reaction with oxygen ion and oxygen gas IAR III group: sandblasting + Ion assisted reaction with oxygen ion only For measuring of tensile bond strength, pairs of specimens within a group were bonded with Panavia 21 resin cement using special device secured that the film thickness was $80{\mu}m$. The results of tensile strength were statistically analyzed with the SPSS release version 8.0 programs. Physical change like surface roughness of In-Ceram alumina core treated by ion assistad reaction was evaluated by Contact Angle Measurement, Scanning Electron Microscopy, Atomic Force Microscopy; chemical surface change was evaluated by X-ray Photoelectron Spectroscopy. The results as follows: 1. In tensile bond strength, there were no statistically significant differences with SC group, IAR groups and SL group except control group(P<0.05). 2. Contact angle measurement showed that wettability of In-Ceram alumina core was enhanced after IAR treatment. 3. SEM and AFM showed that surface roughness of In-Ceram alumina core was not changed after IAR treatment. 4. XPS showed that IAR treatment of In-Ceram alumina core was enabled to create a new functional layer. A keV IAR treatment of In-Ceram alumina core could enhanced tensile bond strength with resin cement. In the future, this ion assisted reaction may be used effectively in various dental materials as well as in In-Ceram to promote the bond strength to natural tooth structure.

  • PDF

Evaluation of dynamical performance of 3 dimensional multi-arm robot (3차원 다중 로봇의 동적 성능 평가)

  • 김기갑;김충영
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 1997.10a
    • /
    • pp.756-759
    • /
    • 1997
  • Multi-arm cooperation robot system is required for more specific and dextrous jobs such as transferring very large or heavy objects, or grasping work piece while processing on it. There is little research on 3-dimensional multi-arm robot. Here we propose two performance indices presenting isotropy of end-effector's acceleration and velocity capabilities with constraints of joint torques, that is Isotropic Acceleration Radius [IAR] and Isotropic Velocity Radius [IVRI. Also the procedure to find 3-dimensional IAR, IVR is proposed, where available acceleration set concept is used. The case of 3-dimensional two 3 joint robot system was simulated and the distributions of IAR, IVR was studied.

  • PDF

IAR-GT: An Incentive Aware Routing based on Game Theory for Selfish Opportunistic Networks

  • Li, Li;Zhong, Xiaoxiong;Jiang, Yong
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • v.13 no.1
    • /
    • pp.152-171
    • /
    • 2019
  • In opportunistic networks, nodes may appear some selfishness while transmitting the message, however, most of the existing research works consider the individual selfishness or social selfishness respectively, and these two types of selfishness may coexist in opportunistic networks. In this paper, we propose an Incentive Aware Routing based on Game Theory for selfish OPPNETs, named IAR-GT, which uses Rubinstein-Stahl bargaining game model to incentivize selfish nodes cooperation in data forwarding. IAR-GT scheme not only considers the resources of nodes, but also uses a new method to calculate the social ties between them. Trace-driven simulations show that our incentive aware routing scheme achieves better performances than comparing schemes under two types of selfishness coexistence environments.

Development of High Voltage Power Supply for 30kW Industrial Magnetron (30kW급 산업용 마그네트론 고압전원 개발)

  • Ryoo, H.J.;Kim, J.S.
    • Proceedings of the KIPE Conference
    • /
    • 2007.11a
    • /
    • pp.50-52
    • /
    • 2007
  • In this paper, the design of power supply for high power magnetron system is stuied. For magnetron drive, three kinds of power supply is required for main high voltage, magnet and heating filament. Detail design was accomplished with basic simulation and real system is developing based on basic design.

  • PDF

Metallization of Polymers Modified by Ton-Assisted Reaction (IAR)

  • J.S. Cho;Bang, Wan-Keun;Kim, K.H.;Sang Han;Y.B. Sun;S.K. Koh
    • Journal of the Microelectronics and Packaging Society
    • /
    • v.8 no.1
    • /
    • pp.53-59
    • /
    • 2001
  • Surfaces of PTFE and PVDF were modified by ion-assisted reaction (IAR) in which 1 keV $Ar^{+}$ ions were irradiated on the surface of the polymer with varying ion dose in an oxygen gas environment, and Cu, Pt, Al and Ag thin films were deposited on the modified polymers. Wettability of the modified polymers was largely improved by the formation of hydrophilic groups due to chemical reaction between polymer surface and the oxygen gas during IAR. The change in wettability in the modified polymers was also related to the change in surface morphology and roughness. Adhesion between metal films and polymers modified by IAR was significantly improved, so that no detachment was possible in the $Scotch^{TM}$ tape test. The increase of adhesion strength between the metal film and the modified PVDF was mainly attributed to the formation of hydrophilic groups, which interacted with the metal film. In the case of the modified PTFE, the enhanced adhesion to metal film could be explained by the change in surface morphology together with the formation of hydrophilic groups. The electrical properties of the metal films on the modified polymers were also investigated.

  • PDF

Ethnobotanical Studies of Gangwon-do: A Comprehensive Research of the Province and Data Analysis

  • Kim, Young-sil;Chung, Jae-min;Kim, Young Dong
    • Proceedings of the Plant Resources Society of Korea Conference
    • /
    • 2018.04a
    • /
    • pp.70-70
    • /
    • 2018
  • As science and technology has developed, human could be flourished especially at the aspect of agriculture and medicine. However, the traditional knowledge of them has stopped being used, which leads to extinctions of it. Korea National Arboretum had surveyed the ethnobotanical uses of Gangwon-do from 2006 to 2017. 522 taxa were defined as ethnoplants through 21469 sheets thanks to 355 respondents who composed 279 females, 73 males and three refused to answer. Analysis of ethnoplants had conducted to provide the excavation of the new plants for industries of agriculture and medication, as well as the evidence for protection of TK and benefit derived from it. Aster scaber Thunb. had been found as the most citated taxa by 0.6591 RFC figure, Pinus desiflora Seibold & Zucc. was found to have the extensive categories of use. Aralia elata (Miq.) Seem. showed the highest figure of CI value. In the index of RI, Pinus desiflora Seibold & Zucc. appeared again, as well as CV, cultural value. For evaluation of the usages of ethnoplants IAR figures are analyzed. The fiber has shown the biggest figure of IAR, despite the dyes are placed the smallest figure.

  • PDF

Development of Auxiliary Power Supply for Industrial Magnetron (산업용 마그네트론 보조전원 개발)

  • Ryoo, H.J.;Kim, J.S.
    • Proceedings of the KIPE Conference
    • /
    • 2007.11a
    • /
    • pp.47-49
    • /
    • 2007
  • For the magnetron, two kinds of auxiliary power is required to generate proper heat and electromagnetic field. In this paper the development of filament power supply and magnet power supply for high power industrial magnetron is studied. The filament power supply which is generate proper heat, even it doesn't require high power like main power supplies, has many consideration such as high voltage insulation and power control coordinated with high voltage cathod current to maintain constant heat generation. The novel control method using constant resistance control is proposed for accurate control of filament power supply.

  • PDF