This paper mainly developed driving system of phased HIFU system from the phase delay. The main contents are as follows:1.
本文从相位延时的角度出发,进行了相控型高强度聚焦超声肿瘤治疗系统的驱动系统研制工作,具体内容如下:1.阐述了以波形激励为基础的数字波形相位延时的原理和实现,分析了提高相位延时精度的方法和意义。
参考来源 - 高精度超声相控阵驱动系统研究Ultrasonic phased array testing technology can produce flexible, controllable synthesized sound beams to realize dynamic focusing and high-speed scanning by exciting each element of array with independent phase delay.
超声相控阵是一种通过对超声阵列换能器中各阵元进行相位延时控制,获得灵活可控的合成波束以实现动态聚焦和高速扫查的检测技术。
参考来源 - 超声相控阵成像技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
理论分析显示，只有尽力提高相位延时的精度、分辨率和稳定性才能显著地抑制旁瓣。
Theoretical analysis showed that only to improve the precision, resolution and stability of phase delay. It can significantly inhibit side lobe.
其好处是减少了的相位延时，从而减低了扬声器的相位失真，改良了扬声器的瞬态响应。
Its benefits is to reduce the phase delay, thus reducing the phase distortion speaker, improved transient response of the speaker.
该滤波器在基频处的幅值无衰减，相位无延时，能将2次以上的谐波全部滤掉。
The filter has no fundamental frequency decay and phase delay, and all harmonics above2nd order are filtered.
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