鉴于传统波形发生器的不足,采用数字合成技术构成任意波形发生器,此波形发生器可以产生任意波形的周期信号,能灵活控制信号的频率幅值,相位,并在很宽的范围内快速切换频率,具有高分辨输出,运用DDS技术构建频率信号源,可获得连续精确调整的信号频率,幅值相位控制方便,存储容量大;AWG占微机系统资源少,通用性好,具有较强的移植性和很高的性能价格比。 研究的内容是利用数字频率合成技术构成任意波形发生器,且通过RS232串行接口传到PC,供PC机管理。
标签: 波形发生器
上传时间: 2013-12-29
上传用户:lo25643
We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.
标签: represented integers group items
上传时间: 2016-01-17
上传用户:jeffery
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa. For example, >> project.name = MyProject >> project.id = 1234 >> project.param.a = 3.1415 >> project.param.b = 42 becomes with str=xml_format(project, off ) "<project> <name>MyProject</name> <id>1234</id> <param> <a>3.1415</a> <b>42</b> </param> </project>" On the other hand, if an XML string XStr is given, this can be converted easily to a MATLAB data type or structure V with the command V=xml_parse(XStr).
标签: converts Toolbox complex logical
上传时间: 2016-02-12
上传用户:a673761058
从实际应用的角度出发,提出利用跟踪微分滤波器抑制机冀挠曲变形产生的影响,通过杆臂效应补偿消 除干扰加速度,用延时补偿算法减少由数据传输延迟造成的量测信息误差。在此基础之上,采用“速度+姿态” 匹配方案,研究了基于H_滤波估计的快速传递对准方法.大量数值仿真、静态试验、动态跑车试验表明,这 些方法有收敛速度较快、精度较高的特点,并t,有较强的抗干扰能力。试验也验证了传递对准方法的有效、可 行,能满足控制系统对导航信息的精度要求.
上传时间: 2016-05-09
上传用户:hzy5825468
汉诺塔!!! Simulate the movement of the Towers of Hanoi puzzle Bonus is possible for using animation eg. if n = 2 A→B A→C B→C if n = 3 A→C A→B C→B A→C B→A B→C A→C
标签: the animation Simulate movement
上传时间: 2017-02-11
上传用户:waizhang
在simulink环境下实现的正弦信号发生器,有使能端控制
上传时间: 2017-04-02
上传用户:洛木卓
作为无源元件之一的电容,其作用不外乎以下几种:应用于电源电路,实现旁路、去藕、滤波和储能的作用。下面分类详述.
上传时间: 2013-12-22
上传用户:wpt
EDA仿真程序,模拟十字路口交通队的工作过程,能手动控制灯的亮灭以应当特殊情况。
上传时间: 2013-12-22
上传用户:lx9076
将魔王的语言抽象为人类的语言:魔王语言由以下两种规则由人的语言逐步抽象上去的:α-〉β1β2β3…βm ;θδ1δ2…-〉θδnθδn-1…θδ1 设大写字母表示魔王的语言,小写字母表示人的语言B-〉tAdA,A-〉sae,eg:B(ehnxgz)B解释为tsaedsaeezegexenehetsaedsae对应的话是:“天上一只鹅地上一只鹅鹅追鹅赶鹅下鹅蛋鹅恨鹅天上一只鹅地上一只鹅”。(t-天d-地s-上a-一只e-鹅z-追g-赶x-下n-蛋h-恨)
上传时间: 2013-12-19
上传用户:aix008
这是一个多点温度测量系统,通过三个传感器点采集温度,51单片机负责下位机的工作,然后通过RS232与PC机上的程序通信,在PC上可以查看这三路温度值,还能分别控制各路的开关状态,有温度超值报警等功能,
上传时间: 2017-06-25
上传用户:aa17807091