TY - GEN
T1 - Low-cost tachometer based on the recursive frequency estimation for automotive applications
AU - Choi, G. H.
AU - Ra, W. S.
AU - Yoon, T. S.
AU - Park, J. B.
PY - 2007
Y1 - 2007
N2 - As electronic industries grow more and more, there are many applications with motors. In a car system, there are also many parts adopting motors. These motor systems can be controlled with their frequency information obtained from motor currents, hall sensor output, tachometer and etc. In this paper, we use a WRLS(Weighted Robust Least Square) estimator [5] to estimate motor frequency with the signal gets from a linear hall sensor. To prove its performance, we compare the estimates from WRLS estimator with those from an analog tachometer. Experimental results show that the WRLS estimator works well in varying frequency and sensor bias situation. However, the WRLS estimator has defects at low frequency or over the discontinuous bias variation of a linear hall sensor.
AB - As electronic industries grow more and more, there are many applications with motors. In a car system, there are also many parts adopting motors. These motor systems can be controlled with their frequency information obtained from motor currents, hall sensor output, tachometer and etc. In this paper, we use a WRLS(Weighted Robust Least Square) estimator [5] to estimate motor frequency with the signal gets from a linear hall sensor. To prove its performance, we compare the estimates from WRLS estimator with those from an analog tachometer. Experimental results show that the WRLS estimator works well in varying frequency and sensor bias situation. However, the WRLS estimator has defects at low frequency or over the discontinuous bias variation of a linear hall sensor.
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U2 - 10.1109/SICE.2007.4420948
DO - 10.1109/SICE.2007.4420948
M3 - Conference contribution
AN - SCOPUS:50249096643
SN - 4907764286
SN - 9784907764289
T3 - Proceedings of the SICE Annual Conference
SP - 46
EP - 49
BT - SICE Annual Conference, SICE 2007
T2 - SICE(Society of Instrument and Control Engineers)Annual Conference, SICE 2007
Y2 - 17 September 2007 through 20 September 2007
ER -