现在举个例子 Now, give you an example.
来帮你们真正理解 How this can really help you understand, OK, yeah,
什么是曲折设计 we’re doing zigzagging of design process.
我们要做的第一件事 The first thing we want to do is
是从A处去往B处 to travel from A to B,
正如我刚才所说 as I mentioned already.
这是你的任务 You know, this is your task.
一个功能需求 This is the Functional Requirement.
这是一个功能域 OK, so this is a Function Domain.
你拿到了这个 You got this.
功能需求 This is called “Functional Requirement”. Alright.
然后 你进行第一步 先折过去 After that, you do step No.1. It’s a zig.
你可能决定要做一个陆路交通系统 Well, you may decide, it’s a land transport system.
你要设计一个陆路交通系统 You can develop a land transport system
不是空路 不是海路 而是陆路 Not air, not sea, but land.
这时你做了个决定 So you made a commitment at this point.
我要走陆路 “I’m gonna travel on land.”
这叫做物理域 So this is called “Physical Domain”.
物理域 Physical Domain.
在物理域内 And in this Physical Domain,
这个小东西叫做设计参数 this little thing is called Design Parameter.
设计参数 Design Parameter. OK.
好了 你从功能需求 So you went from a Functional Requirement,
转到右边 moved on to the right inside,
得到了一个设计参数 you got a Design Parameter.
然后 After that,
这个陆路交通系统就定好了 this land transport system is been determined.
你用这一信息 You use that information
接着致力于下一步 to make further commitment to the next step
你说 我要使它能自我推进 where you say, “OK, I’m gonna use propel by self”.
要使用自我推进力 OK, propel this, whatever,
使它自行从A运动到B move from A to B by self,
而不依靠外力 not by external energy.
非常好 这是你的一个承诺 Great. That’ nice. That’s one commitment you made.
还有一件事 你说 There’s another thing. You say,
我要保证乘客的安全 “OK. We’re gonna secure the passenger.
确保乘客安全 Make sure we secure the passenger.
我们要靠自己准备 And we’re gonna prepare by ourselves,
不依靠任何外界帮助 这很好 without using external fuel or anything. That’s good.
这些依然还是功能需求 Now those are still Functional Requirements.
物理实现呢 接着 再进行曲折 What are the physical realization? Ok Move on, zigzag.
再折过去 折回到那儿 Zig again. Zig back to there.
你看这个陆路交通系统 And you see that land transport system
能被分解成 is being decomposed
两个不同的物理方案 to use two different physical solutions.
一个方案是骑马 One is to use horse. OK, Use horse,
因为你靠自己准备 because you prepare by yourself.
你把骑马作为你的方案 You use horses as your solution.
然后为了确保乘客安全 And in order to make sure that the passenger is safe,
你使用了马鞍 you use saddle.
很好 现在你能说 我们有一个系统了 Good. Wow. You can say, “now we have a system.
一个陆路交通系统 Land transportation system.”
这个交通系统靠骑马来自行运转 Then transport system which do this horse and saddle.
好了 Alright.
既然你已经表明要靠马 Now, since you’ve already committed to use horse,
那你有很多要注意的地方 then you have a lot of things to take care of.
你要保证马的饲料供给 You need to make sure you have food for the horse.
给马提供食物 Provide food for the horse. Right?
你还要确保 And also you need to make sure…
对马蹄的保护 you need to protect hoof of the horse.
否则 一旦你要长途跋涉 Otherwise, once you walk a long way,
马就再也走不动了 the horse may not walk anymore.
那么 要实现这两条需求的 Now, what are the physical realizations
具体策略 of those two requirements
或物理解决方案是什么呢 or physical solution for those two requirements?
你说 我们打算用干草来喂马 You say, “OK, we’re gonna use hay as food”.
很好 干草作马饲料很好 Great. Great food for horse.
我们还要用马蹄铁来保护马蹄 And we will use horse shoe to protect the hoof of the horse.
你们看 这是两个域 对吗 As you can see, there are two domains. OK?
如果你在这画一条线 嗯 画到这 If you draw a line here…OK, draw there.
这是两个域 一个是功能域 There’re two domains, one is a Functional Domain,
一个是物理域 one is a Physical Domain.
现在我们谈谈这两个域的设计 Now we’re talking about design in two domains.
左手边用黄色标注的文字 The language on the left-hand side in yellow color.
都是功能性文字 They’re all functional language.
它们不是物理性质的 不是真实存在的 They’re not physical. They’re not real.
它们是我们想实现的功能 They are just what we want to do.
右手边绿色标注的 The things on the right-hand side in green color.
才是具体存在的东西 Those are the physical beings, OK?
你能切实看到它们 摸到它们 You actually can see them, you can touch them.
这些就是和功能需求 So those are the solutions
相对应的方案 to the functional requirements.
你看 这个曲折过程 Now you can see that this zigzagging process actually
非常地高效 can be very effective.
当然 你可能发现了 And also you probably feel that
可以有很多种可能性 there’s a lot of possibilities.
如果我不用马呢 What if I’m not using a horse?
如果我用别的途径呢 What if I’m using something else?
比如你自己 骑马者的能量呢 Using yourself. Using the rider as energy.
那就成了一种自行车设计 Then you become a bicycle type of design.
好了 我向你们介绍的这个概念 OK. So the whole point I want to show you here
就是曲折设计过程 is a zigzag process.
这是第二点 That’s the second point.
第一点是域和层组成的空间 The first point is the domain and layer space.
现在介绍的是曲折设计过程 Now here is a zigzag process. OK.
在这个过程中 其实人们会说 During this process, actually people mention that
我知道有这么个过程 “OK, we know there’s a process looks like this,
但我分解时 我在这可以骑马 but when I decompose, I can have a horse,
也可以弄个马鞍 I can have saddle here,
我要如何判断 how’d I judge?
我要走哪条路 我需要导向 Which way should I go? I need some guide”.
我需要一些导向 OK. I need some guide.
在曲折过程里我需要一些导向 I need some guide when I do the zigzagging process.
这个导向是什么呢 I need guide. What is the guide?
在公理化设计里 这个导向被叫做公理 Alright. The guide in axiom design are called axioms.
这叫做公理 OK. So those are the axioms.
更具体来说 是设计公理 Design axioms, to be more specific.
叫做设计公理 They are called “Design Axioms”.
什么是设计公理 What are the design axioms?
我们怎么创造它们呢 How can we create those design axioms?
类似于工程设计的基本原则 It’s like fundamental principles of engineering design
到底是什么呢 what are they?
我们一起来看看 Let’s get to there.
在说那个之前 我们先看一个例子 Before we get to there, let’s look at an example, OK?