Research on the characteristics of a piezoelectric balance for the dynamic motion device

• DOI: 10.1504/ijise.2014.065539
• Publication Date: 2014-10-30T12:31:51Z
• Authors: Zhenyuan Jia; Yifei Gao; Zongjin Ren; Wei Liu; Yongyan Shang; Shengnan Gao
• Keywords: Repeatability; Aerodynamic force; Piezoelectric accelerometer; Dynamic load testing

Wind tunnel balance is one of the most important measurement instruments in aerodynamic field. In this paper, a new type piezoelectric wind developed to measure dynamic six-component force case hatch open motion device subsonic flow This mechanical mainly consists novel and rotary encoder. The assembled with four triaxial load cells as core device. According electric charges output which are proportional airloads, moment can be inversely calculated measuring model presented. characteristics have been performed by static calibration test. experimental results show that non-linearity repeatability error within 0.06% 0.19%, maximum crosstalk 1.94%. first natural frequency 163.57 Hz. has good performance response following feature. It appropriate for used airloads tunnel.