什么是系统工程（字幕）47

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下一个图是16.28

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它把这个

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控制器，还有用户界面

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加到这个IBD里面去了

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就是

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下面这个部分

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下面这部分

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那这个图呢，我们这个视频里面就不画了

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操作是跟

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前面一样的

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我们这里就不画了

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然后，16.29跟16.28是连在一起的

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16.29是说有3个什么端口

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那个也不画了

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那我们来画最后一个图

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就是16.30

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蒸馏器控制器的状态机图

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我们前面也画过一个状态机图

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水的三态的变化

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但是那个比较简单

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这个状态机就比较复杂了

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你看，它有分层的

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还有，分区的，正交的嘛

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你看

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上面这个区跟下面这个区是可以并行的

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还有内部的

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动作

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这些就是我们前面画的状态机所没有的

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那下面呢

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我们就来画一下这个状态机图

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那我们来看

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你看，它是

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包名，控制状态机

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然后呢，控制状态

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然后这是注入中，排空中

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我把一些重要的

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英文给

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注上了

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注上了中文

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其他一看就知道的

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像这种，水位高，水位OK

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这种我们就不写了

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就不标注了

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这个是清除残渣中

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积累残渣中，你看，它用的是现在分词

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状态，它是一个形容词

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所以呢，它可以是描述性形容词

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比如说，好看、漂亮

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对吧

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也可以是过去分词

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已经什么什么

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已加热

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或者现在分词，加热中

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或者是不定式

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待加热

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这里用的全部都是

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现在分词

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好

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那下面我们就来画一下状态机图

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首先我们来看，这个位置添加在哪里

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它是在这个状态机

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刚才序列图那个交互

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我们

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没有

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没有这样画

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而是建了一个包

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这里面，你看，状态机

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这个，我们可以建

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控制器状态机，这是

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下面那个状态机的名字

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然后这个控制状态

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图的名字

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怎么加

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这个时候我们可以画在这个下面，右键点这个

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添加

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状态机

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但是我们刚才讲了

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这个它

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背后实际上是UML的

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如果你要追求跟图一样

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你看，在这里直接加就可以

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然后呢

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这个名字我们叫控制器

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状态

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机

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好

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这里我们对比一下

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控制器状态机

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这是控制器状态

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这个是一样的

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那么，我们应该改哪一个

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改后面这个

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把这改成控制器状态

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图的名字

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改一下

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这样

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好

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首先，我们就往上面加状态了

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一个、两个、三个、四个、五个、六个

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然后，第六个里面又有子状态

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我们一个一个加上去

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先加状态

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这里

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关

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注入中

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排空中，加热中

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冷却中

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好

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下面还有一个什么

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操作中

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搞小一点

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而操作中是比较大的一个

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状态

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里面分了两个分区

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我们先把分区加上，右键点这个，advanced

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定义并发的

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子状态

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分区的名字

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我们看

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没有起名字

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就

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我们随便起个名字吧

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好

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那1分区这里呢，又有三个状态

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水位低

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水位OK，水位高

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水位低

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水位OK

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水位高

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好

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这个分区呢两个，积累残渣中，清除残渣中

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这是状态了

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接下来，我们再为状态添加内部的操作

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内部的这个动作

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action 

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这是一个do活动

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是

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就是关闭电源灯

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对吧

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怎么做

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do活动在哪里

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我们把这个往上拉

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就是在这里

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关闭

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电源灯

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把它变成动宾结构

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实际上书里面那个

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那个表达是不合适的

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应该是一个动作嘛

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动词

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动宾结构

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好

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一个个加

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这个是

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打开

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注水阀门

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打开给水阀门

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这是

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阀门对象

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这是打开排空阀门

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好

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这是bx1

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加热器打开

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好

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你看，这里就有一个不是do活动

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是入口活动

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入口，bx1加热器关闭

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在这里

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关闭

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bx1

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加热器

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然后呢

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do活动是什么

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打开这个阀门，打开这个阀门

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打开两个阀门

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就是把这个

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复制一下

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在这里

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打开这个阀门

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然后呢

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还有呢，第二步是

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打开这个排空阀门

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好

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这个

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do活动

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这个运行中

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操作中，这个是

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bx加热器打开

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