作　　者： ; ; ; ;

机构地区： 清华大学机械工程学院机械工程系

出　　处： 《无损检测》 2003年第10期507-510,共4页

摘　　要： 研制的超声相控阵实验系统采用数字方式控制各阵元的超声发射相位 ,能够得到很高的精度和稳定性。阐明该系统各阵元间的发射同步这一重要环节的实现方法并进行详细误差分析。结果表明 ,该方法对于规模不太复杂的相控阵系统具有足够的精度 。 The experimental ultrasonic phased array system developed was described, in which the ultrasound transmission phase of each element was controlled digitally, and high accuracy and stability were obtained. The realization of the significant transmission synchronization of elements was described and error analysis was given in detail. Result showed that the synchronization method adopted was accurate enough for moderate scale ultrasonic phased array system. A primary scheme was proposed for the synchronization of larger-scale one.

关 键 词： 超声检验 相位控制 同步 误差分析 超声相控阵 实验系统 超声发射

领　　域： [金属学及工艺] [金属学及工艺] [机械工程] [机械工程]