空气合PMUT的激发设计,通过时间域等效电路模型来减少戒指下降时间
Zhongjie Zhang1, Liang Zeng2, Chunlei Xu3
1School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China; Piezoelectric Microsystem Technologies (PMT), Microsystems, Silicon Austria Labs, Villach 9500, Austria.
本研究介绍了一种分析方法和模拟平台,用于优化空气合压电微机超声波传感器 (PMUT) 的偏移信号. 优化的信号显著减少了回响时间,并提高了带宽,改善了超声波应用.
科学领域:
- * 声学 声学 声学 声学
- * 材料科学 材料科学
- * 电气工程 电气工程
背景情况:
- * 压电微机超声波传感器 (PMUT) 对于各种传感应用至关重要.
- * 戒指下降时间和带宽限制会影响空气合PMUT的性能.
- *优化驾驶信号是克服这些局限性的关键.
研究的目的:
- * 开发一种分析方法来确定空气合PMUT的最佳偏移信号.
- * 为了减少声时间和扩大带宽而不会牺牲传输灵敏度.
- * 为了提高超声波应用的整体性能和准确性.
主要方法:
- *为PMUTs开发一个时间域等效电路模拟平台.
- *通过调整参数,基于模拟识别最佳偏移信号波形.
- * 用不同的驾驶信号对优化的偏移信号进行实验验证.
主要成果:
- *优化的偏移信号在短时间的驾驶信号中减少了至少85.49%的声时间.
- *优化的偏移信号增加了长期驾驶信号的3.85倍以上的-6dB带宽.
- * 该方法有效地减少了盲区,并利了回声封面.
结论:
- * 拟议的分析方法和模拟平台成功优化了空气合PMUT的偏移信号.
- * 这种优化显著提高了PMUT的性能,包括降低了回环和更广泛的带宽.
- *开发的模拟工具提高了研究效率,并为未来的PMUT系统级优化提供了基础.
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