Publications

@article{J24b,

title = {Thermal Protection of Piezoelectric Actuators Using Complex Electrical Power Measurements and Simplified Thermal Models},

author = {Y. K. Yong and A. A. Eielsen and A. J. Fleming},

url = {https://www.precisionmechatronicslab.com/wp-content/uploads/2024/02/J24b-preprint.pdf},

doi = {10.1109/TMECH.2023.3277437},

isbn = {1083-4435},

year  = {2024},

date = {2024-01-01},

urldate = {2024-01-01},

journal = {IEEE/ASME Transactions on Mechatronics},

volume = {29},

issue = {1},

abstract = {This article describes a method for estimating the temperature of high-power piezoelectric actuators when a direct temperature measurement is impractical. The heat flow is estimated from the real component of the electrical power; then, the temperature is estimated by a transfer function that approximates the thermal response of the system. The transfer function can be derived analytically from a lumped-element approximation or calibrated experimentally by using a system identification method. The proposed method is demonstrated on a piezoelectric stack actuator used in a high-speed nanopositioning device. A second-order transfer function estimates the temperature to within 3  ∘ C of a reference measurement for a range of operating conditions. The proposed method is suitable for protecting piezoelectric actuators in applications where direct temperature measurement is impractical, for example, due to space or wiring constraints.},

keywords = {piezoelectric, System Identification, Thermal},

pubstate = {published},

tppubtype = {article}

}