6-D force measurement of piezoelectric pole balance

QIAN Zhiguang, REN Zongjin, WANG Yuhang, WANG Yuhe, XU Xin

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (17) : 177-183.

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PDF(2478 KB)
Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (17) : 177-183.

6-D force measurement of piezoelectric pole balance

  • QIAN Zhiguang, REN Zongjin, WANG Yuhang, WANG Yuhe, XU Xin
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Abstract

Wind tunnel force balance is an important equipment for aerodynamic research of aircraft. Aiming at the practical requirements of limited cavity space and high dynamic measurement of aircraft model in some wind tunnel experiments, a piezoelectric multi-dimensional force measurement method based on single crystal domain division and multi-region measurement is proposed. The induced charge density distribution of the quartz wafer under the six-dimensional force is calculated, the wafer area is divided, the six-dimensional force decoupling formula is obtained, and the force/torque is applied to the piezoelectric wafer by COMSOL software to simulate the induced charge distribution of the wafer to verify the correctness of the theoretical model. The piezoelectric rod balance and its calibration device are developed. The static and dynamic calibration experiments of the piezoelectric rod balance are carried out. The nonlinear error of the balance is not more than 1.31 %, the repeatability error is not more than 1 %, and the natural frequency is higher than 2700 Hz. The feasibility of measuring high-frequency dynamic six-dimensional force by using piezoelectric wafer partition area in the case of narrow installation space of the balance is verified.

Key words

piezoelectric type balance / charge distribution / six-dimensional force measurement / area division / calibration Experiment

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QIAN Zhiguang, REN Zongjin, WANG Yuhang, WANG Yuhe, XU Xin. 6-D force measurement of piezoelectric pole balance[J]. Journal of Vibration and Shock, 2024, 43(17): 177-183

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