TY - GEN
T1 - Assessment of capacitor-based charge estimators for piezoelectric actuators
AU - Mohammadzaheri, Mortezaa
AU - AlSulti, Sami
AU - Ghodsi, Mojtaba
AU - Bahadur, Issam
AU - Emadi, Mohammadreza
N1 - Publisher Copyright:
© 2021 IEEE.
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PY - 2021/3/7
Y1 - 2021/3/7
N2 - This paper focuses at charge estimators of piezoelectric actuators with a sensing capacitor. They have been claimed in the literature to be outperformed by their newly emerged competitors, charge estimators with a sensing resistor, widely known as digital charge estimators. This paper proposes a digital implementation of capacitor-based estimators and compares them with resistor-based ones both analytically and experimentally. Although, the sensing capacitors are normally bulkier than the sensing resistors used in newer resistor-based estimators; a resistor-based estimator needs to have a variable resistance to deal with different excitation frequencies satisfactorily; this is a major drawback which does not exist in capacitor-based estimators. Both capacitor-based and resistor-based estimators, if designed appropriately, are quite comparable in terms of voltage drop and range of measurable charge. This research concludes that capacitor-based estimators, with right design and implementation, can be still of wide use in nanopositioning.
AB - This paper focuses at charge estimators of piezoelectric actuators with a sensing capacitor. They have been claimed in the literature to be outperformed by their newly emerged competitors, charge estimators with a sensing resistor, widely known as digital charge estimators. This paper proposes a digital implementation of capacitor-based estimators and compares them with resistor-based ones both analytically and experimentally. Although, the sensing capacitors are normally bulkier than the sensing resistors used in newer resistor-based estimators; a resistor-based estimator needs to have a variable resistance to deal with different excitation frequencies satisfactorily; this is a major drawback which does not exist in capacitor-based estimators. Both capacitor-based and resistor-based estimators, if designed appropriately, are quite comparable in terms of voltage drop and range of measurable charge. This research concludes that capacitor-based estimators, with right design and implementation, can be still of wide use in nanopositioning.
KW - Actuator
KW - Capacitor
KW - Charge
KW - Nanopositioning
KW - Piezoelectric
UR - http://www.scopus.com/inward/record.url?scp=85104134833&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85104134833&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/b8be01fb-4ee8-3e78-ad06-60a5faedfd5e/
U2 - 10.1109/ICM46511.2021.9385677
DO - 10.1109/ICM46511.2021.9385677
M3 - Conference contribution
AN - SCOPUS:85104134833
SN - 9781728144429
T3 - 2021 IEEE International Conference on Mechatronics (ICM)
SP - 1
EP - 6
BT - 2021 IEEE International Conference on Mechatronics, ICM 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Conference on Mechatronics, ICM 2021
Y2 - 7 March 2021 through 9 March 2021
ER -