According to the principle of ultrasound detection , this thesis describes a high - speed sampling system for ultrasound emergent wave and echo wave 摘要根据定量超声波检测原理,阐述了一种针对超声波发射信号和回波信号的高速采集系统。
I improve on the pci interface system . it now can transfer sampling data into computer via dma by cooperating with 100gs / s equivalent - time sampling system 改进了pci接口系统,使其可以与100gs / s等价采样系统互相配合,完成采样数据读出。
I do following works in this thesis paper : 1 . i finish the design and simulation of 100gs / s equivalent - time sampling system using orcad capture and pspice 完成了100gs / s等价采样系统的设计,并用orcadpspice对所设计系统进行了电路时域、频域的功能仿真。
Finally , based on the previous analysis and discussion , through the success of the sample system , the feasibility of the solution is proved 在以上的分析、讨论基础上,通过实例系统的成功运行,论证了snmp协议应用于lonworks控制网络管理这一方案的可行性。
In this sampling system , we provide a powerful soft panel that can easily control the vxi instrument . finally , some testing data and conclusion is given 对于本采集系统我们提供了功能强大的软面板,利用软面板可用交互的方式控制vxi仪器, dsp程序可以灵活方便地从上位机下载。
In the present digital era , with the advance of microcomputer technology , the discrete - time variable structure control research on the sampled systems become a hot - spot 伴随着数字时代的到来和计算机技术的发展,基于采样离散模型上的离散系统的变结构控制成为目前研究的热点。
Through the success of the sample system , the solution to manage lonworks based on snmp is proved feasible , offering control network system with a new management approach 通过实例系统的成功运行证明了基于snmp的lonworks网络管理系统的可行性,为控制网络系统的管理提供了一个新的途径。
With the widespread application of computer , the research of data - sampled system has more practical importance , thus data - sampled system is chosen as the research object of this paper 而随着计算机的日益普及,采样控制系统的研究具有更为实际的意义,因而本文以采样控制系统作为研究对象。
Instead , it suggests a sampling system of testing where less than 1 % of primary school children and less than 3 % of secondary pupils would sit exams to map overall education standards 它还提出了一个考试制度样本来取代原来的,即让不到1 %的小学生和不到3 %的中学生参加考试以测量整体教育水平。