• 제목/요약/키워드: Digital serial Control

검색결과 86건 처리시간 0.028초

저전압 대변위 고정도 구동을 위한 근육모사 직렬연결 디지털 구동기 (Muscle-Inspired Serially-Connected Digital Actuators for Low-Voltage, Wide-Range, High-Precision Displacement Control)

  • 이재용;이원철;조영호
    • 대한기계학회논문집A
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    • 제32권1호
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    • pp.1-6
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    • 2008
  • This paper presents muscle-inspired serial digital actuators, achieving the improvement of the range-to-precision and range-to-voltage performance. We propose a weight-balanced design for the serial actuators with serpentine springs using serial arrangement of digital actuators. We have measured the displacement range, precision, and drive voltage at unit and serial actuation of 1Hz. The serial digital actuators produce a full range displacement of $28.44{\pm}0.02{\mu}m$, accumulating the unit displacement of $2.8{\pm}0.5{\mu}m$ at the operating voltage of $4.47{\pm}0.07V$. In addition, the serial digital actuators having the displacement precision of $37.94{\pm}6.26nm$ do not accumulate the precision of the unit actuators, $36.0{\pm}17.7nm$. We experimentally verify that the serial digital actuators achieve the range-to-squared-voltage ratio of $1.423{\mu}m/V^2$ and the range-to-precision ratio of 749.6.

디지털 적응 제어 방식의 조명 제어 시스템의 설계 (Integrated illumination Control System Using Digital Adaptation Control)

  • 송문빈;이승원;이영원;정연모
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 학술대회 논문집 정보 및 제어부문
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    • pp.732-734
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    • 2004
  • In this paper, it is suggested and implemented that a new structure of illumination control system using the adaptation control method is to control a number of illuminators. IDs is given to each illuminator controller, the systems are connected in serial, and then the main system controls the on and off of the power supply, intensity of illumination, and a failure check.

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MZI를 이용한 전광 직렬-병렬 데이터 형식 변환기 구현과 활용 방안 (Implementation of All-Optical Serial-Parallel Data Converters Using Mach-Zehnder Interferometers and Applications)

  • 이성철
    • 디지털산업정보학회논문지
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    • 제7권2호
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    • pp.59-65
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    • 2011
  • All-optical signal processing is expected to offer advantages in speed and power consumption against over electronics signal processing. It has a potential to solve the bottleneck issues of ultra-high speed communication network nodes. All-optical serial-to-parallel and parallel-to-serial data converters would make it possible to easily process the serial data information of a high-speed optical packet without optical-to-electronic-to-optical data conversion. In this paper, we explain the principle of simple and easily expandable all-optical serial-to-parallel and parallel-to-serial data converters based on Mach-Zehnder interferometers. We experimentally demonstrate these data converters at 10Gbit/s serial data rate. They are useful all-optical devices for the all-optical implementations of label decoding, self-routing, control of variable packets, bit-wise logical operation, and data format conversion.

PC 시리얼통신 기반의 이더넷 네트워크 융복합 구성 기술 성능 향상에 관한 연구 (A Study on The Improvement of Multidisplinary Structure Technique of Ethrnet Network based of PC Serial Communication)

  • 진현수
    • 디지털융복합연구
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    • 제13권10호
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    • pp.263-269
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    • 2015
  • UART 시리얼 통신을 PC에서 구현한 후 이를 RS-232케이블로 이더넷 모듈로 신호를 송수신하여 TCP/IP망 상위계층을 통해 응용 제어보드를 원격제어하는 기술을 이보다 하위계층인 인터넷계층 UDP를 가지고서 더효과적인 제어기술의 구현에 대해 논하고자한다. 본 기술의 특징은 PC 통신의 신호를 인터넷통신으로 변환하는 융 복합 변환 신호 기술이다. 이더넷 모듈은 WIZ100SR모듈로서 RS-232프로토콜을 TCP/IP프로토콜로 변환시키는 게이트웨이 모듈로 시리얼장비가 전송한 시리얼 데이터를 TCP/IP 타입의 데이터로 변환하고, 반대로 네트워크를 통해 받은 TCP/IP 데이터를 시리얼 데이터로 변환하여 시리얼 장비에 전송하는 역할을 한다. 또 다른 프로토콜은 하위계층인 서브넷계층인 인터넷계층을 이용한 UDP를 사용한 원격제어보드를 제어가 속도면에서 더 개선되었다는 것을 알 수 있다.

이진가중형 유체 디지털-아날로그 변환기를 이용한 고정도 미소유량 조절기 (Digital Microflow Controllers Using Fluidic Digital-to-Analog Converters with Binary-Weighted Flow Resistor Network)

  • 윤상희;조영호
    • 대한기계학회논문집A
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    • 제28권12호
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    • pp.1923-1930
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    • 2004
  • This paper presents digital microflow controllers(DMFC), where a fluidic digital-to-analog converter(DAC) is used to achieve high-linearity, fine-level flow control for applications to precision biomedical dosing systems. The fluidic DAC, composed of binary-weighted flow resistance, controls the flow-rate based on the ratio of the flow resistance to achieve high-precision flow-rate control. The binary-weighted flow resistance has been specified by a serial or a parallel connection of an identical flow resistor to improve the linearity of the flow-rate control, thereby making the flow-resistance ratio insensitive to the size uncertainty in flow resistors due to micromachining errors. We have designed and fabricated three different types of 4-digit DMFC: Prototype S and P are composed of the serial and the parallel combinations of an identical flow resistor, while Prototype V is based on the width-varied flow resistors. In the experimental study, we perform a static test for DMFC at the forward and backward flow conditions as well as a dynamic tests at pulsating flow conditions. The fabricated DMFC shows the nonlinearity of 5.0% and the flow-rate levels of 16(2$^{N}$) for the digital control of 4(N) valves. Among the 4-digit DMFC fabricated with micromachining errors, Prototypes S and P show 27.2% and 27.6% of the flow-rate deviation measured from Prototype V, respectively; thus verifying that Prototypes S and P are less sensitive to the micromachining error than Prototype V.V.

TMS320F28377D 기반 아날로그-디지털 신호 처리 시스템 (Analog-Digital Signal Processing System Based on TMS320F28377D)

  • 김형우;남기곤;최준영
    • 대한임베디드공학회논문지
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    • 제14권1호
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    • pp.33-41
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    • 2019
  • We propose an embedded solution to design a high-speed and high-accuracy 16bit analog-digital signal processing interface for the control systems using various external analog signals. Choosing TMS320F28377D micro controller unit (MCU) featuring high-performance processing in the 32-bit floating point operation, low power consumption, and various I/O device supports, we design and build the proposed system that supports both 16-bit analog-digital converter (ADC) interface and high precision digital-analog converter (DAC) interface. The ADC receives voltage-level differential signals from fully differential amplifiers, and the DAC communicates with MCU through 50 MHz bandwidth high-fast serial peripheral interface (SPI). We port the boot loader and device drivers to the implemented board, and construct the firmware development environment for the application programming. The performance of the entire implemented system is demonstrated by analog-digital signal processing tests, and is verified by comparing the test results with those of existing similar systems.

디지털 필터 전용처리기의 설계와 구성에 관한 연구

  • 남상엽;박인정;이태원
    • 한국통신학회:학술대회논문집
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    • 한국통신학회 1984년도 춘계학술발표회논문집
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    • pp.29-32
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    • 1984
  • A microprocessor for the dedicated purpose of digital filtering has been designed and constructed. A microsequencer to control the flowing of data is designed with the concept of a hardware compiler of AHPI, statements. In order to save the processing time, this system utilizes parallel data calculation method instead of the one proposed by Peled and Liu which depended on serial calculation method. The flexible program control technique has been applied to the implementation of the sepcialprocessor for the digital signal processing.

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An Adaptive Universal Serial Bus (USB) Protocol for Improving the Performance of Data Communication under the Heavy Traffic

  • Kim, Yoon-Gu;Lee, Ki-Dong
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2005년도 ICCAS
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    • pp.2499-2502
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    • 2005
  • Universal Serial Bus (USB) is one of the most popular communication interfaces. When USB is used in more extended range, especially configuring home network by connecting multiple digital devices each other, USB interface uses the bandwidth in the way of Time Division Multiplexing (TDM) so that the bottleneck of bus bandwidth can be brought under the heavy traffic. In this paper, the more effective usage of bus bandwidth to overcome this situation is introduced. Basically, in order to realize the system for transferring real-time moving picture data among digital information devices, we analyze USB transfer types and descriptors and introduce the method to enhance the detailed performance of isochronous transfer that is one of USB transfer types.

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통신해양기상위성 통신탑재체 데이터 접속 적합성 분석 (Data Bus Compatibility Analysis of COMS Communication Payload)

  • 최재동;조영호;김의찬
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2009년도 제40회 하계학술대회
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    • pp.1013_1014
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    • 2009
  • In this paper, the electrical interfaces used in between COMS satellite bus and Ka-band communication payload are analyzed to verify the robustness of data bus. The purpose of the serial data bus of satellite is to allow serial data transfer between one bus controller or source equipment to several user terminals or slave equipments. A serial data bus in COMS satellite is mainly used for Channel Amplifier and Digital Control Unit of Ka-band Payload.

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Comma free 코드를 이용한 HDTV 신호의 직렬 전송 방식 (Serial interface system of HDTV signal in comma free code)

  • 이호웅;강철호
    • 한국통신학회논문지
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    • 제21권7호
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    • pp.1814-1819
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    • 1996
  • 이 논문은 comma free 코드를 사용한 새로운 직렬 전송 시스템을 묘사하였다. 일반적으로 병렬 25핀 케이블과 컨넥터는 HDVCR, D3VTR 및 HDTV 수신기와 같은 디지털 시스템에서 데이터를 전송 및 수신등에 사용된다. 동축 케이블은 소비자 상품의 응용 및 방송 스튜디오에서 긴 신호 경로와 전환등에 사용될 수 있다. 이 직렬 데이터 전송 기술은 에러 검출 및 자기 동기가 가능하며, PLL 제어를 위한 edge삽입이 용이하다. 뿐만 아니라 RFPLL, 스크램블링, NRZI등을 필요로 하지 않기 때문에 하드웨어가 간단하다.

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