什么是系统工程(字幕)13

0

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如果不加图

1

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怎么加

2

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我们来看一下

3

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你看

4

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右键点这个,添加元素

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6

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这里选

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系统工程,SysML

8

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9

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然后SysML 1.5,块定义

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11

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这里默认就已经是block了

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那我们首先加第一个是什么

13

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这个

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蒸馏器系统上下文

15

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直接敲蒸馏器系统

16

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上下文

17

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你看,这就多了一个

18

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对吧

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然后可以继续加

20

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你看那个界面还在

21

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对不对

22

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我们一个一个加,水源,蒸馏器

23

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水分配系统,热源

24

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对吧

25

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水源

26

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蒸馏器

27

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水分配系统

28

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热源

29

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30

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还有吗

31

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我看看

32

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33

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34

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就这几个

35

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36

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这是这几个结点上那个block了

37

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也就是说,结点上这个block每个代表一个什么

38

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代表一个系统

39

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对吧

40

00:01:30,370 --> 00:01:31,470

所以这个

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块内部图的抽象级别是在什么级别

42

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它是系统之间的交互

43

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44

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这里没了

45

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那接下来,就来加这个了

46

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中间这个流动

47

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这个热、水

48

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这个

49

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你看,这后面是类

50

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这后面是那个类

51

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或者类元,这是那个

52

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实例的名字,对吧

53

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54

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冒号右边是类型

55

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左边实例

56

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所以我们是

57

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58

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加这个类型

59

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一个水,一个热

60

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后面什么污水净水呀

61

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这个是它的那个

62

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实例的名字

63

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或者说,角色的名字

64

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加在哪里

65

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那这个是放在值类型

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这个包这里

67

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这里我们可以

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添加两个block,一样的

69

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跟刚才一样

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你可以不用画图都可以

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72

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添加

73

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一个是

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75

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一个是热

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77

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这两个有了

78

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那接下来

79

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就是要画这个图了

80

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你看,这个图是什么

81

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这个蒸馏器系统上下文这个block的什么

82

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IBD,就是内部块图

83

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它名字叫

84

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context,上下文

85

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这是它的名字

86

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那我们就来画一下

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你看

88

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针对这个上下文

89

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画图嘛

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右键点它

91

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添加一个这个

92

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对吧

93

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添加这个

94

00:03:38,460 --> 00:03:38,756

95

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图的名字,上下文

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怎么1.4

97

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我们不要1.4

98

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我们1.5

99

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添加

100

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添加图

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然后呢

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这个

103

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SysML

104

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1.5

105

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106

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这个

107

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然后改名叫上下文

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109

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你看,对应一下这个

110

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IBD block

111

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蒸馏器系统上下文,上下文

112

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IBD block,蒸馏器系统上下文

113

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对吧

114

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115

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接下来,我们就要来

116

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把这些

117

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放上去了

118

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那这些浏览器里都有了嘛

119

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对吧

120

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我们就把它拖上来

121

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第一个要拖的

122

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就是那个

123

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水源

124

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这里,拖上来

125

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然后这里选property,表示这是它的一个属性

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它默认就property,属性

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还有其他选项

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先不用管它

129

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就这个,属性

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实际上这一步

131

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跟我们在那个

132

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块定义图里面画那个组合关系

133

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是一样的

134

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只不过我们这里没有画那个块定义图组合关系

135

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如果你画了组合关系

136

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说我这个上下文组合了一个水源

137

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那么这个

138

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上下文这里,你看,这里就出现一个属性嘛

139

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你看

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00:05:16,815 --> 00:05:17,020

141

00:05:17,020 --> 00:05:20,095

你在块定义图里面画一个组合关系

142

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它也可以起到这个效果

143

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它也是一个属性

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因为我没有画块定义图嘛

145

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我们直接在块内部图

146

00:05:28,608 --> 00:05:31,240

内部块图这里操作了

147

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所以这里,那这个名字就不要了

148

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这名字不要

149

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因为它

150

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那个图上这里就没有名字嘛

151

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对吧

152

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这里没有名字

153

00:05:43,990 --> 00:05:47,040

左边这个实例名没有

154

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还有,接下来,下一个就是那个蒸馏器

155

00:05:55,620 --> 00:05:57,300

也同样不要名字

156

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还有什么

157

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水分配系统

158

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还有操作人员

159

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那从用例那里拖过来了

160

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放这里

161

00:06:26,380 --> 00:06:28,670

还有什么,热源

162

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还有一个小人是用水人员

163

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这样

164

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我们对齐一下

165

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小一点

166

00:07:11,530 --> 00:07:11,822

167

00:07:11,822 --> 00:07:12,990

往下一点

168

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169

00:07:50,080 --> 00:07:51,130

这样来

170

00:07:52,000 --> 00:07:55,290

那接下来,你看,这里有一个

171

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多重性

172

00:07:56,793 --> 00:07:59,386

表示这个属性的多重性

173

00:07:59,386 --> 00:08:00,330

这个得先

174

00:08:00,820 --> 00:08:02,100

设置了

175

00:08:04,390 --> 00:08:05,201

那多重性在哪里设置

176

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就选中这个

177

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然后在property这里

178

00:08:12,410 --> 00:08:13,090

179

00:08:13,630 --> 00:08:14,945

然后往下走

180

00:08:14,945 --> 00:08:16,260

你看有多重性

181

00:08:17,930 --> 00:08:20,094

然后这个是多少来着

182

00:08:20,094 --> 00:08:21,297

一到多,对吧

183

00:08:21,297 --> 00:08:22,740

所以下限是1

184

00:08:23,190 --> 00:08:24,820

上限是多

185

00:08:27,650 --> 00:08:28,270

186

00:08:29,340 --> 00:08:29,583

187

00:08:29,583 --> 00:08:31,528

你看,这就出来了

188

00:08:31,528 --> 00:08:33,230

这个呢,是多少

189

00:08:33,510 --> 00:08:36,750

这是0到多

190

00:08:37,740 --> 00:08:39,195

下限是0

191

00:08:39,195 --> 00:08:40,650

上限是多

192

00:08:42,880 --> 00:08:43,154

193

00:08:43,154 --> 00:08:44,250

这样来

194

00:08:44,880 --> 00:08:46,005

搞小一点

195

00:08:46,005 --> 00:08:47,580

这个太大了

196

00:08:57,930 --> 00:08:59,150

下面也是一样

197

00:08:59,860 --> 00:09:00,061

198

00:09:00,061 --> 00:09:01,070

都搞小一点

199

00:09:12,430 --> 00:09:12,846

200

00:09:12,846 --> 00:09:14,510

这搞定了

201

00:09:15,310 --> 00:09:17,355

但是这里有个小人

202

00:09:17,355 --> 00:09:19,401

这个就搞不定了

203

00:09:19,401 --> 00:09:20,310

这搞不定

204

00:09:20,310 --> 00:09:21,220

因为那个

205

00:09:21,710 --> 00:09:22,801

这里没有小人

206

00:09:22,801 --> 00:09:24,257

你要小人可以

207

00:09:24,257 --> 00:09:25,531

你把小人拖上来

208

00:09:25,531 --> 00:09:26,440

你看怎么做

209

00:09:26,440 --> 00:09:28,260

如果你不想要这个

210

00:09:28,260 --> 00:09:29,534

你想要小人呢

211

00:09:29,534 --> 00:09:30,080

拖上来

212

00:09:30,520 --> 00:09:30,723

213

00:09:30,723 --> 00:09:33,159

但这里就不要Property了

214

00:09:33,159 --> 00:09:34,580

这里选实例

215

00:09:34,940 --> 00:09:35,670

这里

216

00:09:36,740 --> 00:09:37,836

这样可以

217

00:09:37,836 --> 00:09:39,590

但是这样可以的话

218

00:09:39,590 --> 00:09:42,880

这边就没有这个方框了

219

00:09:44,260 --> 00:09:47,460

所以我们这里,这小人就不管它了

220

00:09:51,410 --> 00:09:51,686

221

00:09:51,686 --> 00:09:53,900

接下来呢,就是轮到

222

00:09:54,630 --> 00:09:57,750

各个block之间的那个

223

00:09:58,590 --> 00:10:01,140

应该说各个属性之间的那个

224

00:10:01,750 --> 00:10:02,630

关系了

225

00:10:02,630 --> 00:10:03,510

那个连接

226

00:10:03,510 --> 00:10:06,810

那这里面的连接,实际上就一个,就是那个

227

00:10:08,750 --> 00:10:14,981

项,item的这个流,item这个流的关系

228

00:10:14,981 --> 00:10:17,813

实际上是一种动态的关系

229

00:10:17,813 --> 00:10:18,380

我有

230

00:10:19,140 --> 00:10:20,910

水流到你那里

231

00:10:22,700 --> 00:10:24,130

那这个怎么画

232

00:10:25,310 --> 00:10:28,047

我们的那个水、热是在哪里

233

00:10:28,047 --> 00:10:29,415

水、热在这里嘛

234

00:10:29,415 --> 00:10:29,871

对吧

235

00:10:29,871 --> 00:10:30,100

236

00:10:32,430 --> 00:10:33,673

然后画过来

237

00:10:33,673 --> 00:10:37,653

显然这个三角这个,就是哪一个

238

00:10:37,653 --> 00:10:38,400

就这个

239

00:10:39,390 --> 00:10:43,010

项流这个,你看怎么画

240

00:10:43,010 --> 00:10:44,820

选中这个,画过来

241

00:10:46,150 --> 00:10:46,800

242

00:10:47,080 --> 00:10:48,520

然后添加

243

00:10:48,960 --> 00:10:50,588

我们是水嘛

244

00:10:50,588 --> 00:10:51,240

对吧

245

00:10:51,950 --> 00:10:52,770

确定

246

00:10:53,170 --> 00:10:54,920

然后这里添加上这个

247

00:10:58,370 --> 00:10:58,598

248

00:10:58,598 --> 00:10:59,738

这样过来

249

00:10:59,738 --> 00:11:01,334

我把它过来一点

250

00:11:01,334 --> 00:11:01,562

251

00:11:01,562 --> 00:11:02,930

有点窄了

252

00:11:06,850 --> 00:11:07,152

253

00:11:07,152 --> 00:11:08,060

接下来

254

00:11:09,900 --> 00:11:14,340

但是这个跟我们这个图上不是一致的哦

255

00:11:15,660 --> 00:11:17,809

图上是说,你看,水是水

256

00:11:17,809 --> 00:11:19,720

它前面有个说脏水

257

00:11:20,290 --> 00:11:20,658

258

00:11:20,658 --> 00:11:22,500

也就是说,水

259

00:11:24,610 --> 00:11:25,640

是一个

260

00:11:26,000 --> 00:11:27,020

大的类型

261

00:11:27,020 --> 00:11:29,060

下面又分脏水

262

00:11:29,530 --> 00:11:30,550

净水

263

00:11:31,710 --> 00:11:33,780

那这个脏水怎么表达

264

00:11:34,570 --> 00:11:34,751

265

00:11:34,751 --> 00:11:36,925

不可能说我把水改成冒号

266

00:11:36,925 --> 00:11:37,830

这不行

267

00:11:37,830 --> 00:11:39,280

另外一种就是什么

268

00:11:39,890 --> 00:11:44,330

一种做法是在这上面添加一个污水的

269

00:11:45,690 --> 00:11:46,530

Block

270

00:11:46,890 --> 00:11:49,950

它是这个水的一个

271

00:11:50,780 --> 00:11:52,470

子类

272

00:11:52,750 --> 00:11:55,420

或者子block,一个泛化关系

273

00:11:56,720 --> 00:11:56,888

274

00:11:56,888 --> 00:11:58,574

污水去继承这个水

275

00:11:58,574 --> 00:12:00,260

但这里说的不是继承

276

00:12:00,260 --> 00:12:02,790

而是说什么,冒号说的是一个实例

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