• Title, Summary, Keyword: real-time implementation

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All Implementation and Performance Analysis of Priority Model of Real-Time CORBA (실시간 CORBA의 우선순위 모델 구현 및 성능분석)

  • 박순례;정선태
    • 제어로봇시스템학회:학술대회논문집
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    • pp.89-89
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    • 2000
  • The Current CORBA has many drawbacks to be deployed successfully in real-time system applications. Recently, OMG adopted Real-Time CORBA specification. In this paper, we report our efforts on an implementation of Priority Model of Real-Time CORBA spec., which is one of the most important components in Real-Time CORBA spec. The improvement of real-time performances of our implementation is verified experiments.

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A Design and Implementation of Priority Model of Real-Time CORBA (실시간 CORBA의 우선순위 모델 설계 및 구현)

  • 박순례;정선태
    • Proceedings of the IEEK Conference
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    • pp.101-104
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    • 2000
  • The Current CORBA has many drawbacks to be deployed successfully in real-time system applications. Recently, OMG adopted Real-Time CORBA specification. In this paper. we report our efforts of a design and implementation of Priority Model of Real-Time CORBA spec., which is one of the most important components in Real-Time CORBA spec. The improvement of real-time performances of our implementation is verified by expereiments.

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An interactive environment for simulation and real-time implementation of control systems

  • Koga, Masanobu
    • 제어로봇시스템학회:학술대회논문집
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    • pp.336-339
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    • 1995
  • An approach to efficient implementation of real-time control systems is presented in this paper. A compiler for translation of control algorithms is used in combination with a general program for real-time control. The compiler translates control algorithms written for the simulation in a design language to an implementation language. The translated algorithms are then automatically incorporated in the real-time control program.

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Design and implementation of TCP/IP protocol stack for small real-time kernels (소형 실시간 커널을 위한 TCP/IP 프로토콜 설계및 구현)

  • 윤재식;김재양;정선태
    • 제어로봇시스템학회:학술대회논문집
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    • pp.414-417
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    • 1997
  • Many small-sized real-time kernels do not provide memory management and device drivers, not to mention file management. In this paper, we propose a design and implementation of TCP/IP protocol stack for such small real-time kernels based on [6] where we studied issues to be considered for porting the functionalities of TCP/IP for such small real-time kernels.

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Real-time Implementation of G.723.1A Speech Coder Using a TMS320VC5402 DSP (TMS320VC5402 DSP를 이용한 G.723.1A 음성부호화기의 실시간 구현)

  • Lee, Song-Chan;Chung, Ik-Joo
    • Speech Sciences
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    • v.10 no.2
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    • pp.65-75
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    • 2003
  • This paper describes the issues associated with the real-time implementation of G.723.1A dual-rate speech coder on a TMS320VC5402 DSP. Firstly, the main features of the G.723.1A speech coder and the procedure involved in the implementation using assembly and C languages are discussed. Various real-time implementation issues such as memory/MIPS tradeoffs are also presented. For fixed-point implementation, we converted the ITU-T fixed-point ANSI C code into TMS320VC5402 code in the bit-exact way through verification using the test vectors. Finally, as the result of implementation, we present the MIPS and memory requirement for the real-time operation.

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Implementation of a network-based Real-Time Embedded Linux platform

  • Choi, Byoung-Wook;Shin, Eun-Cheol;Lee, Ho-Gil
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1840-1845
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    • 2005
  • The SoC and digital technology development recently enabled the emergence of information devices and control devices because the SoC present many advantages such as lower power consumption, greater reliability, and lower cost. It is required to use an embedded operating system for building control systems. So far, the Real-Time operating system is widely used to implement a Real-Time system since it meets developer's requirements. However, Real-Time operating systems reveal a lack of standards, expensive development, and license costs. Embedded Linux is able to overcome these disadvantages. In this paper, the implementation of control system platform using Real-Time Embedded Linux is described. As a control system platform, we use XScale of a Soc and build Real-Time control platform using RTAI and Real-Time device driver. Finally, we address the feasibility study of the Real-Time Embedded Linux as a Real-Time operating system for mobile robots.

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Implementation of a Mobile Robot Control Platform using Real-Time Embedded Linux (실시간 임베디드 리눅스를 이용한 이동 로봇 플랫폼 구현)

  • Choi Byoung-Wook;Shin Eun-Cheol
    • Journal of Institute of Control, Robotics and Systems
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    • v.12 no.2
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    • pp.194-200
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    • 2006
  • The SoC and digital technology development recently enabled the emergence of information devices and control devices because the SoC presents many advantages such like lower power consumption, greater reliability, and lower cost. However, it is nearly impossible to use the SoC without operating systems because the SoC is included with many peripherals and complex architecture. It is required to use embedded operating systems and real-time operating systems may be used as an embedded operating system. So far, real-time operating systems are widely used to implement a Real-Time system since it meets developer's requirements. However, real-time operating systems have disadvantages including a lack of standards, expensive development, and license. Embedded Linux is able to overcome their disadvantages. In this paper, the implementation of control system platform for a mobile robot using real-time Embedded Linux is described. As a control hardware system platform, XScale board is used. As the real-time Embedded Linux, RTAI is adopted which is open source and royalty free, and supports various architectures and real-time devices, such like real-time CAN and real-time COM. This paper shows the implementation of RTAI on XScale board that means the porting procedure. We also applied the control system platform to the mobile robot and compared the Real-Time serial driver with non real-time serial driver. Experimental results show that that using RTAI is useful to build real-time control system with powerful functionalities of Linux.

Extension of Real Time Execution in MMS Implementation

  • Kim, Dong-Sung;Lee, Jae-Min;Kim, Hyung-Suk;Kwon, Wook-Hyun
    • 제어로봇시스템학회:학술대회논문집
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    • pp.69-72
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    • 1999
  • In this paper, the implementation method for the extending real-time execution in MMS Implementation is proposed. For this, the method of MMS over ATM(Asynchronous Transfer Mode) and IEEE 802.12 network is analyzed. By the analysis of service response time, making the ASIC of encoding and decoding parts are proposed for one of the real time extension in MMS. The main goals of this paper to analyze and propose suitable methods to meet the real time requirements in MMS applied system.

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Real-Time Implementation of AMR Speech Codec Using TMS320VC5510 DSP (TMS320VC5510 DSP를 이용한 AMR 음성부호화기의 실시간 구현)

  • Kim, Jun;Bae, Keun-Sung
    • MALSORI
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    • no.65
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    • pp.143-152
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    • 2008
  • This paper focuses on the real time implementation of an adaptive multi-rate (AMR) speech codec, that is a standard speech codec of IMT-2000, using the TMS320VC5510. The series of TMS320VC55x is a 16-bit fixed-point digital signal processor (DSP) having low power consumption for the use of mobile communications by Texas Instruments (TI) corporation. After we analyze the AMR algorithm and source code as well as the structure and I/O of 7MS320VC55x, we carry out optimizing the programs for real time implementation. The implemented AMR speech codec uses 55.2 kbyte for the program memory and 98.3 kbyte for the data memory, and it requires 709,878 clocks, i.e. about 3.5 ms, for processing a frame of 20 ms speech signal.

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Real Time Implementittion of Time Varying Nonstationary Signal Identifier and Its Application to Muscle Fatigue Monitoring (비정상 시변 신호 인식기의 실시간 구현 및 근피로도 측정에의 응용)

  • Lee, Jin;Lee, Young-Seock;Kim, Sung-Hwan
    • Journal of Biomedical Engineering Research
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    • v.16 no.3
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    • pp.317-324
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    • 1995
  • A need exists for the accurate identification of time series models having time varying parameters, as is important in the case of real time identification of nonstationary EMG signal. Thls paper describes real time identification and muscle fatigue monitoring method of nonstationary EMG signal. The method is composed of the efficient identifier which estimates the autoregressive parameters of nonstationary EMG signal model, and its real time implementation by using T805 parallel processing computer. The method is verified through experiment with real EMG signals which are obtained from surface electrode. As a result, the proposed method provides a new approach for real time Implementation of muscle fatigue monitoring and the execution time is 0.894ms/sample for 1024Hz EMG signal.

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