TY - GEN
T1 - Motor frequency estimation by using instrumental variable method
AU - Kim, Yong Hwi
AU - Choi, Ka Hyung
AU - Yoon, Tae Sung
AU - Park, Jin Bae
PY - 2013
Y1 - 2013
N2 - Motion control is an important task in industrial automation systems. And the exact motor speed estimation is needed for precise motion control. To obtain the motor speed, linear hall sensor is used in this paper for implementation as a low cost and a simple calculation. Since the linear hall sensor output is sinusoid wave, the measurement equation can be modeled with a sinusoid signal easily. Based on the model, the instrumental variable (IV) method is proposed to estimate the motor frequency in this paper. To prove its performance, the estimation from IV is compared with those from the nominal least squares (NoLS), weighted robust least squares (WRLS), and true value. Experimental results show that the IV method is superior to the NoLS algorithm, and similar with the WRLS algorithm. Moreover, the proposed IV method is useful because it can be applied even if the stochastic properties are unknown or not exact.
AB - Motion control is an important task in industrial automation systems. And the exact motor speed estimation is needed for precise motion control. To obtain the motor speed, linear hall sensor is used in this paper for implementation as a low cost and a simple calculation. Since the linear hall sensor output is sinusoid wave, the measurement equation can be modeled with a sinusoid signal easily. Based on the model, the instrumental variable (IV) method is proposed to estimate the motor frequency in this paper. To prove its performance, the estimation from IV is compared with those from the nominal least squares (NoLS), weighted robust least squares (WRLS), and true value. Experimental results show that the IV method is superior to the NoLS algorithm, and similar with the WRLS algorithm. Moreover, the proposed IV method is useful because it can be applied even if the stochastic properties are unknown or not exact.
UR - http://www.scopus.com/inward/record.url?scp=84893584674&partnerID=8YFLogxK
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U2 - 10.1109/ICCAS.2013.6704145
DO - 10.1109/ICCAS.2013.6704145
M3 - Conference contribution
AN - SCOPUS:84893584674
SN - 9788993215052
T3 - International Conference on Control, Automation and Systems
SP - 1274
EP - 1276
BT - ICCAS 2013 - 2013 13th International Conference on Control, Automation and Systems
T2 - 2013 13th International Conference on Control, Automation and Systems, ICCAS 2013
Y2 - 20 October 2013 through 23 October 2013
ER -