novelslam Chapter 35 Zhou Mengxue's Admiration
Chapter 35 Zhou Mengxue's Admiration
Zhou Mengxue took the file bag and read it three times from beginning to end, sobbing uncontrollably.
"Alright, alright, stop crying."
Chen Weiguo couldn't bear to see the girl cry and was a little at a loss. "Hurry up and pack your things. Go to the station to report for duty tomorrow. Your work ID is inside, don't lose it."
"Senior Chen...can I really go?"
"Sure, you think I'm joking?"
Zhou Mengxue hastily wiped away her tears with her sleeve, then suddenly bowed deeply to him.
"Senior Chen, thank you so much. I really don't know how to thank you enough..."
Chen Weiguo pulled her up: "Stop with all this. You should thank me. Once you're in the station, work hard. I won't be polite to you."
Zhou Mengxue nodded vigorously.
She excitedly added that her parents wanted to thank him in person and asked him to come to their house for dinner the next evening.
Chen Weiguo declined twice, but Zhou Mengxue spoke so earnestly that he couldn't refuse again, so he agreed.
……
The next morning, Zhou Mengxue arrived at the research institute on time to report for duty.
She was wearing a clean Zhongshan suit, her hair was tied into two braids, and she looked much more energetic, a completely different person from the one by the river that day.
Professor Zheng introduced her to everyone in the room at the morning meeting.
"This is Comrade Zhou Mengxue, a sophomore in the Department of Mechanical Engineering at Tsinghua University. She has excellent grades and will be joining our research group as an intern researcher starting today. Comrade Chen Weiguo will be in charge of mentoring her. Please welcome her."
As everyone applauded, Zhou Mengxue stood next to Chen Weiguo, her cheeks flushed, looking a little nervous.
There was a young researcher named Ma Wenbin, a graduate of Yenching Institute of Technology, who was usually a bit arrogant in the institute.
He glanced at Zhou Mengxue and muttered, "A woman working in mechanics? What can she do?"
The voice wasn't loud, but Zhou Mengxue heard it, and the smile on her face froze for a moment.
Chen Weiguo heard it too.
He didn't react on the spot, but he remembered it.
After the morning meeting, Chen Weiguo led Zhou Mengxue to her workstation.
"This is your desk. Get familiar with the environment today, and I'll assign you some work this afternoon."
"Um!"
Zhou Mengxue put down her bag and began tidying up the table.
In the afternoon, Chen Weiguo gave her her first task: to look at the information on Swiss precision grinding machines and write a summary of the key technical points of the chapter on thermal deformation compensation within three days.
Zhou Mengxue took the documents and frowned as soon as she opened the first page.
It was all technical jargon translated from foreign languages; she hadn't learned many of the concepts in school.
But she didn't say anything; she just opened her notebook and began to read it word by word.
Chen Weiguo observed her for a while and nodded to himself.
It's not that I don't know how, it's that I'm afraid of not being willing to learn.
This girl is someone who puts in the effort.
But what truly shocked Zhou Mengxue was yet to come.
In the afternoon, the research group held a technical discussion meeting to discuss a technical challenge in vibration modal analysis.
Several researchers with master's degrees argued for a long time, but none of them could convince the others.
Some say the hammering method should be used for vibration testing, while others say a vibrator should be used for frequency sweep testing.
The two groups argued heatedly, neither able to offer a compelling reasoning to convince the other.
Professor Zheng happened to be unavailable, so no one made the decision.
Finally, Ma Wenbin slammed his pen on the table and said, "Stop arguing! There's no mature solution for this in China. What's the point of us arguing? Let's put it aside for now."
Everyone was a little discouraged.
Just then, Chen Weiguo stood up and walked to the blackboard.
"I'd like to say a few words."
The meeting room fell silent.
"The hammer impact method and the frequency sweep method each have their advantages and disadvantages. The hammer impact method is convenient and quick, but has a low signal-to-noise ratio and requires a high level of skill from the operator. The frequency sweep method has high accuracy, but has high equipment costs and a long testing cycle. You are arguing about which method to choose, but you can actually change your approach and fuse the data from the two methods."
He picked up the chalk and began writing formulas.
"The frequency response function obtained by the hammer impact method and the frequency response function obtained by the frequency sweep method are theoretically two observations of the same function. If we use the weighted least squares method to fuse them, we can find a balance between accuracy and efficiency."
The chalk flew across the blackboard, formulas line after line.
"The fused frequency response function takes this form. Then we assign a weighting coefficient to the amplitude error and the phase error respectively, and the value of the coefficient is determined according to the working conditions. The working conditions of precision grinding machines are mainly high precision, so the phase weight should be set larger."
Everyone stared at the lines of formulas on the blackboard.
The two groups that were arguing fiercely just moments ago are now completely silent, staring wide-eyed at the blackboard.
Xu Zhenbang put down his pen, looked at the densely packed derivations on the blackboard, and muttered, "Hiss, this line of thinking... how come I didn't think of that?"
The researcher doing the mechanics analysis stared at the blackboard for a while, then suddenly slammed his hand on the table: "Brilliant! Brother Chen, your fusion algorithm has completely bypassed the core issue of our debate!"
After writing the last equal sign, Chen Weiguo threw the chalk into the chalk trough.
"However, there are also limitations. The accuracy of this algorithm depends on the noise level of the sensor. The noise level of better sensors in China is on the order of a few microvolts. At this level, the advantages of weighted fusion become apparent. But if the operating conditions are too harsh and the noise completely drowns out the signal, then any fusion algorithm will be useless."
He turned to look at everyone: "My suggestion is to run this algorithm on simulation data first to see the fusion effect. If the effect is good, we can put it into actual testing next week."
No one objected.
Even Ma Wenbin, who had been the most stubborn before, remained silent.
Zhou Mengxue sat in the corner, watching the whole scene unfold.
Her pen stopped, and she only wrote a few lines in her notebook because she could no longer keep up with Chen Weiguo's deduction speed.
My mind was in turmoil.
She was in the Department of Mechanical Engineering at Tsinghua University, ranking among the top three in her class. She made several small inventions, and the professors in the department all praised her for her talent.
She always thought she was quite talented.
But after Chen Weiguo's deductions, she realized how big the gap was between them.
That's not just a tiny difference, it's a world of difference.
They derived those formulas so smoothly, without a single stumble.
She started to fall behind after only memorizing the sixth line.
What shocked her even more was that Chen Weiguo was only twenty-three years old.
He's not much older than her.
Moreover, he was just a student in a vocational high school continuing education program!
At this level, let alone the trainees in the advanced training program, even the researchers in the institute who graduated with master's degrees from Tsinghua University are no match for him!
……
After the meeting, Zhou Mengxue caught up with Chen Weiguo, clutching her notebook.
"Senior Chen... I have a few questions I'd like to ask you."
Chen Weiguo turned to look at her: "Speak."
Zhou Mengxue opened her notebook, which was filled with a bunch of questions.
Chen Weiguo glanced at it and was a little surprised.
Although the girl couldn't keep up with his deduction speed, she asked all the right questions.
The fact that she can ask these questions shows that she has a solid foundation, but she lacks some advanced mathematical tools.
"Okay, I'll explain them to you one by one."
Chen Weiguo took her notebook and began to explain to her.
Zhou Mengxue listened attentively, taking notes as she went, and asking questions immediately whenever she encountered something she didn't understand, without any hesitation.
The initial frustration in her heart gradually dissipated, replaced by a spirit of never giving up.
Senior Chen reached this level at the age of 23. Although I can't catch up with him, I can learn from him.
One day, I will be able to stand on the blackboard and explain these things to others.