TY - GEN
T1 - Position estimation of ball impact in baseball batting using PVDF films
AU - Osawa, Takumi
AU - Tanaka, Yoshihiro
AU - Yanai, Toshimasa
AU - Sano, Akihito
N1 - Funding Information:
*This work was supported by JST, PRESTO 1Takumi Osawa is with the Department of Electrical and Mechanical Engineering, Faculty School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan cjr13025@nitech.jp 2Yoshihiro Tanaka and Akihito Sano are with the Department of Electrical and Mechanical Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Japan 2Yoshihiro Tanaka is also with JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan 3Toshimasa Yanai is with the Faculty of Sport Sciences, Graduate School of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa city, Saitama, Japan
Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/21
Y1 - 2017/7/21
N2 - In this study, we present a position estimation of ball impact in baseball batting using PVDF films. A vibration sensor consisted of two PVDF films in a cross shape was developed. The outputs from the PVDF films were normalized and filtered. We calculated the largest peak of the normalized and filtered outputs to eliminate the effect of intensity of the impact and extract a primary vibration mode, and the amplitude ratio between two outputs. The largest peak and the amplitude ratio were used as the parameters for the estimation. Fundamental experiments on the different impact intensities and the different positions showed that the largest peak well reflected the longitudinal impact position of the impact and the amplitude ratio reflected both longitudinal and circumferential impact positions of the impact. Then, we proposed an estimation method in which the longitudinal position was estimated firstly, then the circumferential position was estimated. The validation test showed that the estimation errors were small around the sweet spot, indicating that our sensor has the capability of determining the longitudinal and circumference positions of the ball impact in baseball batting.
AB - In this study, we present a position estimation of ball impact in baseball batting using PVDF films. A vibration sensor consisted of two PVDF films in a cross shape was developed. The outputs from the PVDF films were normalized and filtered. We calculated the largest peak of the normalized and filtered outputs to eliminate the effect of intensity of the impact and extract a primary vibration mode, and the amplitude ratio between two outputs. The largest peak and the amplitude ratio were used as the parameters for the estimation. Fundamental experiments on the different impact intensities and the different positions showed that the largest peak well reflected the longitudinal impact position of the impact and the amplitude ratio reflected both longitudinal and circumferential impact positions of the impact. Then, we proposed an estimation method in which the longitudinal position was estimated firstly, then the circumferential position was estimated. The validation test showed that the estimation errors were small around the sweet spot, indicating that our sensor has the capability of determining the longitudinal and circumference positions of the ball impact in baseball batting.
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U2 - 10.1109/WHC.2017.7989942
DO - 10.1109/WHC.2017.7989942
M3 - Conference contribution
AN - SCOPUS:85034216049
T3 - 2017 IEEE World Haptics Conference, WHC 2017
SP - 442
EP - 447
BT - 2017 IEEE World Haptics Conference, WHC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE World Haptics Conference, WHC 2017
Y2 - 6 June 2017 through 9 June 2017
ER -