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Analysis of Measured Azimuth Error on Sensitivity Calibration Routine  

Woo, Kwang-Joon (Dept. of Electrical Engineering, Dankook University)
Kang, Su-Min (Dept. of Electrical Engineering, Dankook University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.48, no.1, 2011 , pp. 1-8 More about this Journal
Abstract
The accuracy of MR sensor-based electronic compass is influenced by the temperature drift and DC offset of the MR sensor and the OP-amp, the magnetic distortion of nearby magnetic materials, and the compass tilt We design the 3-axis MR sensor and accelerometers-based electronic compass which is compensated by the set/reset pulse switching method on the temperature drift and DC offset, by the execution of hard-iron calibration routine on the magnetic distortion, and by the execution of the Euler rotational equation on the compass tilt. We qualitatively analyze the measured azimuth error on the execution of sensitivity calibration routine which is the normalization process on the different sensitivity of each MR sensor and the different gain of each op-amps. This compensation and analytic result make us design the one degree accuracy electronic compass.
Keywords
Electronic Compass; MR Sensor; Accelerometer; Calibration Routine;
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  • Reference
1 M.J. Caruso, "Application of Magnetoresistive Sensors in Navigation Systems", Sensor and Actuators 1997, SAE SP-1220, (Feb. 1997) 15-21
2 M. Horton, C. Kitchin, "A Dual Axis Tilt Sensor Based on Micromachined Accelerometers", sensor, (April 1996).
3 Olson, Gregory J., et al, "Nongimbaled Solid-State Compass", Solid-State Sensor and Actuator Workshop, June 1994.
4 B.B. Pant, "Magnetoresistive Sensors", Scientific Honeyweller, Vol. 8, no. 1, (fall 1987) 29-34
5 J.E. Lenz, G.F.Rouse, L.K. Strandjord, B.B.Pant, A.MEtze, H.B.French, E.T. Benser, D.R.Krahn, "A Highly Sensitive Magnetoresistive Sensors", Solid State Sensors and Actiator Worshop, 1992
6 J.Goetz, T.Bratland, M.Caruso, "Designing with Magnetoresistive Sensors", Sensor Expo Workshop, Philadelphia, October, 1996.