We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
A Novel Transfer Function Based Ring-Down Suppression System for PMUTs.
- Authors
Wu, Zhipeng; Liu, Wenjuan; Tong, Zhihao; Zhang, Songsong; Gu, Yuandong; Wu, Guoqiang; Tovstopyat, Alexander; Sun, Chengliang; Lou, Liang
- Abstract
In this paper, a novel ring-down suppression system based on transfer function is proposed for the first time to suppress the ring-down time and decrease the blind area of PMUTs (Piezoelectric Micromachined Ultrasonic Transducers). This suppression system includes a transfer function and a simple P (proportion) controller, which can reduce the ring-down time without degrading any performances of PMUTs. The transfer function serves as a virtual PMUT device, feeding its output into the P controller; then, the P controller generates a suppression signal to the actual PMUT device. The ring-down time of a 115-kHz PMUT array is demonstrated to be reduced by up to 93% through the suppression system. In addition, the P controller has been experimentally optimized, reducing the blind area of the PMUT array by about 40%. Moreover, a low ring-down PMUTs system design guideline is established, which is practical and straightforward for industrial scenarios. Finally, the system can be easily integrated into ASIC (Application Specific Integrated Circuit).
- Subjects
TRANSFER functions; APPLICATION-specific integrated circuits; ULTRASONIC transducers; INTERFERENCE suppression
- Publication
Sensors (14248220), 2021, Vol 21, Issue 19, p6414
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s21196414