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Hardware and Software Implementation of a GPS Receiver Test Bed Running from PC
윈필롱(Nguyen Phi Long),윈황휴(Nguyen Hoang Hieu),이상훈(Lee SangHoon),박옥득(Park OkDeuk),김현수(Kim HyunSu),김한실(Kim HanSil) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
When developing a new GPS receiver module, the essential problems are evaluation of reliable algorithms, software debugging, and performance comparison between algorithms to find optimal solution. Most GPS receiver modules nowadays use a correlator to track signals from satellites and an MCU (Micro Controller Unit) to control operations of the entire module. The problem of software evaluation from MCU is very difficult, due to limitation of MCU resources and low ability of interfacing with user. Normally, user has to expense special tool kit for a limiting access to MCU but it is also hard 10 use. This article introduces an implementation of a GPS receiver lest bed using correlator GP2021 interfacing with ISA (Industry Standard Architecture) PC bus. This way can give user complete control and visibility into the operation of the receiver, then user can easily debug program and test algorithms. For this article, the least square method is implemented to lest the hardware and software performance.
The Development of Accurate GPS Module Using Discrete-Time H<SUB>∞</SUB> Filter
Nguyen Hoang(윈황휴),Nguyen Phi Long(윈필롱),Lee Sang-Hoon(이상훈),Park Ok-Deuk(박옥득),Kim Hyun-Su(김현서),Kim Han-Sil(김한실) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
In this paper, we present the traditional CPS Position-Velocity (PV) model to apply for both Discrete-Time Kalman Filter and Discrete-Time H<SUB>∞</SUB> Filter. The positioning algorithms of both filters are proposed for a stand-alone low-cost CPS module to increase its accuracy. For disturbance cancellation, the Kalman Filter requires the statistical information about process and measurement noises while the H<SUB>∞</SUB> Filter only requires that these noises are bounded. Experiments show that with the same measurement data, H<SUB>∞</SUB> Filter gives us better positioning results compared with Least-Squared method and Kalman Filter.
GPS 칩셋을 이용한 L1 C/A 코드 GPS 수신기 설계
김현수(Kim HyunSu),윈필롱(Nguyen Phi Long),이상훈(Lee SangHoon),박옥득(Park OkDeuk),윈황휴(Nguyen Hoang Hieu),김한실(Kim HanSil) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
This paper is to design a low cost GPS/DGPS receiver using GP2021 correlator. By modifying the existent GPS, the performance can be enhance than before. The H/W and S/W should be updated to have good result
DCS 시스템에서 CRA를 이용한 PID 이득 Tuning에 관한 연구
이상훈(Lee Sang-Hoon),강윤복(Kang Yun-Bok),박옥득(Park Ok-Deuk),김현수(Kim Hyun-Su),윈황휴(Nguyen Phi Long),윈필롱(Nguyen Hoang Hieu),김한실(Kim Han-Sil) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
산업현장에서 가장 많이 활용되고 있는 PID제어기의 이론적인 배경을 토대로 실제 DCS 기반 플랜트에서 PID Tuning Method에 의한 PID제어기를 구현하고 제어성능을 확인한다. 또한 DCS(Distribute Control System)의 PID Controller를 분석하고 전 공정제어 System 중 일부분을 ARMA Modeling하여 만족스런 성능이 구현되도록 최적의 PID gain Parameter를 찾는다.