TY - GEN
T1 - Theoretical and Experimental Investigations of the PWM Frequency Effect on the Sensitivity of Thermal Expansion-Based Angular Motion Sensor
AU - Luo, Huahuang
AU - Cabot, Jose
AU - Wang, Xiaoyi
AU - Duan, Mingzheng
AU - Lee, Yi Kuen
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/6/20
Y1 - 2021/6/20
N2 - In this paper, we present a systematic study of the PWM frequency (fPWM) effect on the sensitivity of a thermal expansion-based angular motion (TEAM) sensor. An optimal fPWM of heaters was experimentally derived for each pair of temperature detectors to achieve the optimized sensitivity. Based on the time-dependent analysis of our 2D PDE model and experiments, a semi-empirical formula has been proposed to relate the optimal fPWM\, (f_o) with the thermal time constant (tau). Moreover, a generalized 'Phase Diagram' of the TEAM sensor's normalized sensitivity (S) was presented, for the first time, as a function of the fPWM and the normalized heater-to-detector distance (D_x/L_x). Herein, an optimal region, where S0.95, has been identified to enhance the sensor performance with the corresponding optimal fPWM range of 2226\Hz and optimal D_x/L_x range of 0. 420.53. Thus, the diagram can be useful to guide the designing optimization of TEAM sensors.
AB - In this paper, we present a systematic study of the PWM frequency (fPWM) effect on the sensitivity of a thermal expansion-based angular motion (TEAM) sensor. An optimal fPWM of heaters was experimentally derived for each pair of temperature detectors to achieve the optimized sensitivity. Based on the time-dependent analysis of our 2D PDE model and experiments, a semi-empirical formula has been proposed to relate the optimal fPWM\, (f_o) with the thermal time constant (tau). Moreover, a generalized 'Phase Diagram' of the TEAM sensor's normalized sensitivity (S) was presented, for the first time, as a function of the fPWM and the normalized heater-to-detector distance (D_x/L_x). Herein, an optimal region, where S0.95, has been identified to enhance the sensor performance with the corresponding optimal fPWM range of 2226\Hz and optimal D_x/L_x range of 0. 420.53. Thus, the diagram can be useful to guide the designing optimization of TEAM sensors.
KW - PWM frequency effect
KW - Phase Diagram
KW - Thermal expansion-based angular motion sensor
KW - Thermal response
UR - http://www.scopus.com/inward/record.url?scp=85114961473&partnerID=8YFLogxK
U2 - 10.1109/Transducers50396.2021.9495401
DO - 10.1109/Transducers50396.2021.9495401
M3 - Conference contribution
AN - SCOPUS:85114961473
T3 - 21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021
SP - 406
EP - 409
BT - 21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2021
Y2 - 20 June 2021 through 25 June 2021
ER -