【摘要】 介绍了超声电机试验中对激励信号的要求.研究了采用通用计算机的直接数字频率与波形合成技术.根据超声电机试验要求,基于通用计算机的直接数字频率与波形合成技术实现了正弦和周期Chirp信号波形合成,并对输出信号实测结果进行了分析和处理.采用通用计算机的直接数字频率与波形合成技术,便于利用计算机丰富的软硬件资源,特别适合于试验系统的应用开发.更多还原

【Abstract】 The authors introduce the requirement of exciting signal for ultrasonic motor testing,research on direct digital frequency synthesis(DDFS) technology basing on personal computer.According to the requirement of ultrasonic motor testing,DDFS is realized for sine wave and periodic chirp signal basing on personal computer.The output signal is(tested) and analyzed.DDFS basing on personal computer,convenient to utilize the software and hardware resources,is fit to application in the test system.更多还原