Family Album CD4 对白

沙漠中的汽车困境
Rebecca在沙漠中的汽车出现故障,她联系了Joe's Auto Repair进行维修,并遇到了一位好心的路人Alherto,Alherto主动提出帮助Rebecca前往修车厂。

Day five: Morning comes to the desert. The rain has stopped.
Joe's Auto Repair. This is Joe speaking. What can I do for you?
This is Rehecca Casey. Listen, I left you a message last night about my car . . .
It's sitting right here.
Great! Do you know what the problem is?
Not yet. It'll take a couple hours.
A couple of hours! I have a long trip ahead of me.
I just got it in. Call me hack in a couple of hours.
I'll call back in two hours, is that OK?
All right.
Who is it?
It's Alherto.
Oh, come in!
Hey, you're still here! I went to bring you a pillow last night. I thought you'd left.
Oh really? Oh, man, I'm sorry. A trucker came up and pulled next to me . . . and he was making too much noise, so I went on the other side of the motel.
I'm glad you didn't leave.
Um . . . may I ask you a favor?
Of course.
Can I use your shower?
Oh, yeah, sure!
My back's really stiff and I think a hot shower would . . .
Yeah, go right ahead. Um . . . All the other towels are wet. This is the only one that's dry. Sorry.
That's fine.
So, what's happening with your car?
Oh, it's at Joe's Auto Repair.
Really. Does he know what's wrong with it?
No, not yet. I have to call back in two hours.
Oh. You know, you should be careful. Sometimes those mechanics don't know what they're doing.
Yeah, but I'm at his mercy.Listen uh . . . I don't want to bother you anymore. So I'm just going to take a taxi over to the garage . . .Thank you for everything yesterday...
Hey, I was . . . I was glad to help. You, you don't have to take a taxi . . . I'll drive you over there. Just wait till I'm done showering . . .
Oh, it s really not necessary. Thank you, again. Bye.
Excuse me. Excuse me . . . hello.
I'm sorry. How are you today, ma'am?
Fine, thank you. I need to get a taxi as soon as possible.
A taxi?
I need to go over to Joe's Auto Repair.
The nearest taxi is in Indio, at least an hour away.
Oh, come on.
Honest.
Well, how can I get over to the garage?
Why don't you thumb a ride with one of our truckers?
Hitchhike?


【直流微电网】径向直流微电网的状态空间建模与线性化:一种耦合DC-DC变换器状态空间平均模型的方法 (Matlab代码实现)内容概要:本文介绍了径向直流微电网的状态空间建模与线性化方法,重点提出了一种基于耦合DC-DC变换器状态空间平均模型的建模策略。该方法通过对系统中多个相互耦合的DC-DC变换器进行统一建模,构建出整个微电网的集中状态空间模型,并在此基础上实施线性化处理,便于后续的小信号分析与稳定性研究。文中详细阐述了建模过程中的关键步骤,包括电路拓扑分析、状态变量选取、平均化处理以及雅可比矩阵的推导,最终通过Matlab代码实现模型仿真验证,展示了该方法在动态响应分析和控制器设计中的有效性。; 适合人群:具备电力电子、自动控制理论基础,熟悉Matlab/Simulink仿真工具,从事微电网、新能源系统建模与控制研究的研究生、科研人员及工程技术人员。; 使用场景及目标:①掌握直流微电网中多变换器系统的统一建模方法;②理解状态空间平均法在非线性电力电子系统中的应用;③实现系统线性化并用于稳定性分析与控制器设计;④通过Matlab代码复现和扩展模型,服务于科研仿真与教学实践。; 阅读建议:建议读者结合Matlab代码逐步理解建模流程,重点关注状态变量的选择与平均化处理的数学推导,同时可尝试修改系统参数或拓扑结构以加深对模型通用性和适应性的理解。
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