← 返回 JSSC 论文列表JSSC 2014第7期Other0.25μm BCD
A Four-Channel, 36 V , 780 kHz Piezo Driver Chip for Structural Health Monitoring Ya n g G u o, Student Member , IEEE, Christopher Aquino
一款用于结构健康监测的四通道36V 780kHz压电驱动芯片。
36V, 780kHz, 40.5dB信号失真
压电驱动结构健康监测脉宽调制亚纳秒校准低失真
▸创新点1：滤波脉宽调制波形合成方法创新，通过最小二乘优化预计算脉冲过渡时间，显著提高波形精度和效率。
▸创新点2：亚纳秒级定时校准技术，引入新型校准方法，实现高精度定时控制，确保信号同步和稳定性。
▸创新点3：低信号失真设计电路创新，优化电路结构和信号处理，达到40.5 dB的低失真水平，提升系统性能。
▸创新点4：四通道36 V 780 kHz压电驱动芯片系统创新，集成多通道驱动能力，满足结构健康监测的高压高频需求。
Abstract
This paper describes a four-channel piezo driver chip for use in active structural health monitoring. Each channel can drive a piezoelectric transduce r with a continuous-wave signal of 36 V and 780 kHz. The waveform is synthesized using filtered pulse-width modulation (PWM), where the pulse transition times are precomputed through a least-square optimization problem. A calibration technique is introduced to achieve subnanosecond timing accuracy and 40.5 dB signal distortion. A 13 mm proof-of-concept IC was fabricated in a 0.25 mB C Dp r o c e s sa n d evaluated within an application test bed.