2 research outputs found

    Single-antenna GPS/Gyroscope/Magnetometer Integrated Attitude Estimation

    Get PDF
    ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ๋‹จ์ผ์•ˆํ…Œ๋‚˜ GPS ๋ฅผ ์ด์šฉํ•œ ์˜์‚ฌ์ž์„ธ์™€ ๊ทธ๋ฅผ ๋ณด์™„ํ•˜๊ธฐ ์œ„ํ•œ ์ž์ด๋กœ์Šค์ฝ”ํ”„์™€ ์ง€์ž๊ธฐ์„ผ์„œ์˜ ํ†ตํ•ฉ์„ ๋‹ค๋ฃจ๊ณ  ์žˆ๋‹ค. ์˜์‚ฌ์ž์„ธ๋Š” GPS ์˜ ์ธก์ •์น˜๋ฅผ ์ด์šฉํ•˜์—ฌ ์ถ”์ •๋œ ์ž์„ธ์ด๊ธฐ ๋•Œ๋ฌธ์— ์ถœ๋ ฅ์œจ์ด ๋‚ฎ๊ณ  ์‹œ๊ฐ„์ง€์—ฐ์ด ํฌํ•จ๋˜์–ด ์žˆ๋‹ค. ๋˜ํ•œ GPS ์˜ ์†๋„ ์ธก์ •์น˜๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•˜๊ธฐ ๋•Œ๋ฌธ์— ๋น„ํ–‰์กฐ๊ฑด์— ๋”ฐ๋ผ์„œ ์‹ค์ œ ์ž์„ธ์™€ ์˜์‚ฌ์ž์„ธ ์‚ฌ์ด์—๋Š” ์ฐจ์ด๊ฐ€ ๋ฐœ์ƒํ•˜๊ฒŒ ๋œ๋‹ค. ์ด์™€ ๊ฐ™์€ ์˜์‚ฌ์ž์„ธ์˜ ๋ฌธ์ œ์ ์„ ์ž์ด๋กœ์Šค์ฝ”ํ”„์™€ ์ง€์ž๊ธฐ์„ผ์„œ๋ฅผ ์ด์šฉํ•˜์—ฌ ๊ฐœ์„ ํ•˜๋Š” ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ์ œ์•ˆํ•˜๊ณ  ์‹œ๋ฎฌ๋ ˆ์ด์…˜์„ ์ˆ˜ํ–‰ํ•˜์˜€๋‹ค.In this paper, we propose the attitude estimation algorithm integrating SAGPS(Single Antenna GPS), Gyroscope and Magnetometer. Pseudo-attitude from SAGPS has low output rate and time delay property. And it differs from actual attitude according to flight condition of airplane because it is based on velocity measurements of GPS. We adopted gyroscope and magnetometer to improve attitude accuracy and output rate of the pseudo-attitude. Using proposed method, simulation is performed and its results are shown.OAIID:oai:osos.snu.ac.kr:snu2012-01/104/0000003405/22SEQ:22PERF_CD:SNU2012-01EVAL_ITEM_CD:104USER_ID:0000003405ADJUST_YN:NEMP_ID:A000360DEPT_CD:446CITE_RATE:0FILENAME:2012์ถ˜๊ณ„ํ•ญ๊ณต์šฐ์ฃผํ•™ํšŒ์‹ค์ ์ž๋ฃŒ_๋…ธํฌ๊ถŒ.pdfDEPT_NM:๊ธฐ๊ณ„ํ•ญ๊ณต๊ณตํ•™๋ถ€EMAIL:[email protected]:

    Quaternion-based AHRS Improved by Inertial Sensor Bias Compensation

    No full text
    ์ž์„ธ ๋ฐ ๋ฐฉ์œ„ ๊ฒฐ์ • ์‹œ์Šคํ…œ(AHRS)์€ ์ž์ด๋กœ ๋ฐ”์ด์–ด์Šค๋ฅผ ์ถ”์ •ํ•˜๊ธฐ ์œ„ํ•˜์—ฌ ๊ฐ€์†๋„๊ณ„ ์„ผ์„œ์™€ ์ง€์ž๊ธฐ ์„ผ์„œ๋ฅผ ์ด์šฉํ•œ๋‹ค. ์ €๊ฐ€์˜ MEMS ๊ฐ€์†๋„๊ณ„์˜ ๊ฒฝ์šฐ ๋ฐ”์ด์–ด์Šค ์•ˆ์ •๋„๋„ ๋‚ฎ์„ ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ์ˆ˜์‹ญ mg ์˜ ์ดˆ๊ธฐ ์˜ค์ฐจ๋ฅผ ๊ฐ€์ง„๋‹ค. ์ด๋Ÿฌํ•œ ๊ฐ€์†๋„๊ณ„ ๋ฐ”์ด์–ด์Šค ์˜ค์ฐจ๋Š” ์ €๊ฐ€ MEMS ์„ผ์„œ๋กœ ๊ตฌ์„ฑ๋œ AHRS ์˜ ์ž์„ธ ์ •ํ™•๋„๋ฅผ ๊ฐ์†Œ์‹œํ‚จ๋‹ค. ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ์ž์ด๋กœ ๋ฐ”์ด์–ด์Šค๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ๊ฐ€์†๋„๊ณ„ ๋ฐ”์ด์–ด์Šค๋ฅผ ์‹ค์‹œ๊ฐ„ ์ถ”์ •ํ•จ์œผ๋กœ์จ ์ž์„ธ ๋ฐ ๋ฐฉ์œ„๊ฐ์˜ ์ •ํ™•๋„๋ฅผ ํ–ฅ์ƒ์‹œํ‚ค๋Š” ์ฟผํ„ฐ๋‹ˆ์–ธ ๊ธฐ๋ฐ˜ ํ™•์žฅ์นผ๋งŒํ••ํ„ฐ ์•Œ๊ณ ๋ฆฌ๋“ฌ์„ ์ œ์‹œํ•˜๊ณ , ์‹œ๋ฎฌ๋ ˆ์ด์…˜์„ ํ†ตํ•ด ์ œ์‹œ๋œ ์•Œ๊ณ ๋ฆฌ๋“ฌ์˜ ์„ฑ๋Šฅ์„ ๊ฒ€์ฆํ•œ๋‹ค.Attitude Heading Reference System (AHRS) uses accelerometer and magnetic sensor to compensate gyro bias. A lowcost MEMS grade accelerometer has tens of mg of initial bias as well as low in-run bias stability. This uncorrected initial bias of accelerometer is the main factor to reduce the accuracy of AHRS consisted of MEMS grade inertial sensors. This paper describes the quaternion-based extended Kalman filter algorithm to improve the attitude accuracy by estimating gyro and accelerometer bias together. Simulation results verify the performance of the proposed method.OAIID:oai:osos.snu.ac.kr:snu2012-01/104/0000003405/14SEQ:14PERF_CD:SNU2012-01EVAL_ITEM_CD:104USER_ID:0000003405ADJUST_YN:NEMP_ID:A000360DEPT_CD:446CITE_RATE:0FILENAME:์กฐ์•”_์‹ค์ ์ž๋ฃŒ_2012KSAS์ถ”๊ณ„.pdfDEPT_NM:๊ธฐ๊ณ„ํ•ญ๊ณต๊ณตํ•™๋ถ€EMAIL:[email protected]:
    corecore