虫虫首页| 资源下载| 资源专辑| 精品软件
登录| 注册

工业<b>测</b>控系统

  • 一个关于

    一个关于,用mscomm控件进行工控系统串口通讯的设计。有关键代码,值得一看,

    标签:

    上传时间: 2014-07-14

    上传用户:zhengjian

  • 源代码用动态规划算法计算序列关系个数 用关系"<"和"="将3个数a

    源代码\用动态规划算法计算序列关系个数 用关系"<"和"="将3个数a,b,c依次序排列时,有13种不同的序列关系: a=b=c,a=b<c,a<b=v,a<b<c,a<c<b a=c<b,b<a=c,b<a<c,b<c<a,b=c<a c<a=b,c<a<b,c<b<a 若要将n个数依序列,设计一个动态规划算法,计算出有多少种不同的序列关系, 要求算法只占用O(n),只耗时O(n*n).

    标签: lt 源代码 动态规划 序列

    上传时间: 2013-12-26

    上传用户:siguazgb

  • The government of a small but important country has decided that the alphabet needs to be streamline

    The government of a small but important country has decided that the alphabet needs to be streamlined and reordered. Uppercase letters will be eliminated. They will issue a royal decree in the form of a String of B and A characters. The first character in the decree specifies whether a must come ( B )Before b in the new alphabet or ( A )After b . The second character determines the relative placement of b and c , etc. So, for example, "BAA" means that a must come Before b , b must come After c , and c must come After d . Any letters beyond these requirements are to be excluded, so if the decree specifies k comparisons then the new alphabet will contain the first k+1 lowercase letters of the current alphabet. Create a class Alphabet that contains the method choices that takes the decree as input and returns the number of possible new alphabets that conform to the decree. If more than 1,000,000,000 are possible, return -1. Definition

    标签: government streamline important alphabet

    上传时间: 2015-06-09

    上传用户:weixiao99

  • 上下文无关文法(Context-Free Grammar, CFG)是一个4元组G=(V, T, S, P)

    上下文无关文法(Context-Free Grammar, CFG)是一个4元组G=(V, T, S, P),其中,V和T是不相交的有限集,S∈V,P是一组有限的产生式规则集,形如A→α,其中A∈V,且α∈(V∪T)*。V的元素称为非终结符,T的元素称为终结符,S是一个特殊的非终结符,称为文法开始符。 设G=(V, T, S, P)是一个CFG,则G产生的语言是所有可由G产生的字符串组成的集合,即L(G)={x∈T* | Sx}。一个语言L是上下文无关语言(Context-Free Language, CFL),当且仅当存在一个CFG G,使得L=L(G)。 *⇒ 例如,设文法G:S→AB A→aA|a B→bB|b 则L(G)={a^nb^m | n,m>=1} 其中非终结符都是大写字母,开始符都是S,终结符都是小写字母。

    标签: Context-Free Grammar CFG

    上传时间: 2013-12-10

    上传用户:gaojiao1999

  • :面向对象软件测试是面向对象软件开发的重要一环

    :面向对象软件测试是面向对象软件开发的重要一环,是保证软件质量提高软件可靠性的关键。结合传统软件测试 的方法和技术,并针对面向对象软件所具有的特征,将面向对象软件测试层次划分为3层:类测试、类簇测斌和系统测试, 讨论了面向对象软件测试的测试方法和解决方案,并以销售系统为例,给出了相应层次的具体测试策略。

    标签: 对象软件 对象 测试 软件开发

    上传时间: 2013-12-17

    上传用户:84425894

  • 该源码是关于模糊控制算法的MATLAB实现的

    该源码是关于模糊控制算法的MATLAB实现的,内容包括被控系统模糊建模,输入变量转换到论域,模糊规则库的建立等。

    标签: MATLAB 源码 模糊控制 算法

    上传时间: 2014-01-02

    上传用户:离殇

  • We have a group of N items (represented by integers from 1 to N), and we know that there is some tot

    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)

    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

  • 用VC实现PC并行端口数字信息的输入/输出 目前

    用VC实现PC并行端口数字信息的输入/输出 目前,在实验室和工业应用的各种控制系统中,串口是常用的计算机与外部控制系统之间的数据传输通道。由于串行通信方便易行,所以应用广泛。但是使用串行通信,在实时性、速度、数据量等方面受到限制。而计算机的并行端口传输数据时是一次性传送8个位(一个字节)或更多,由于传输量较大,因此数据的传输速度要比串口快,在许多必须讲究传输速度的控制系统里,用PC并行端口与之连接就是一个很好的解决方案

    标签: 并行端口 数字信息 输入 输出

    上传时间: 2016-05-06

    上传用户:ggwz258

  • 2006 年的春天给中国疲软多年的缝制设备市场带来春风和雨露

    2006 年的春天给中国疲软多年的缝制设备市场带来春风和雨露,短短的两个月里,电脑平车 (自动剪线平缝机和三自动平缝机)骤然取代以往销量最大的普通平车成为市场主角。由于我国 的电脑平车的生产企业不多,加之电控系统等零部件货源短缺,因此市场供需矛盾突出,一些地 方出现了断货的情况。业内人士预测,国产平缝机已经步入电脑平车时代。

    标签: 2006 设备 带来

    上传时间: 2013-12-11

    上传用户:源弋弋