Technology: The naughty kid ruined my college entrance examination, but I turned over to nuclear fus

"So it is."

Lu Yu bowed his head slightly.

After Mr. Wang's introduction, he also roughly has a similar number in his heart about the current situation of future car companies.

"That is."

"The biggest problem you face right now is that the technology module is out of control, resulting in frequent accidents, and the distrust of buyers is this problem, right?"

Lu Yu spoke again and asked.

"Yes!"

Mr. Wang looked sad and said:

"Some time ago, the Eagle Country blocked the technology of many of our automation modules."

"The original existing technology can not be used, so it can only be replaced by independent research and development, but .... Where is it so easy to develop independently?

"The program we worked so hard to make, although barely working, is still far from the original model."

"Many old customers want to refund, and the capital chain is directly broken."

"If we can't calm down the trouble in a short period of time, I'm afraid the future will really be... Poured.

Lu Yu pursed his lips and comforted:

"Mr. Wang, take us to your technology research and development room first."

"What kind of situation it is, I also need to understand it in detail, and then try to see if it can work."

"Good!"

Mr. Wang tried to cheer himself up again and brought Lu Yu all the way to the technical department.

As he walked in, he introduced,

"This is our technical research department."

"To be honest, although our comrades have done their best, there is still a big gap compared to those really first-class research laboratories, which makes you laugh."

"It's okay, this scale.... Enough is enough.

Lu Yu took a deep breath and slowly looked at the research room in front of him.

Indeed, as Mr. Wang said, although many equipment is expensive, the overall model is new, but compared with those equipment in the first-class research room, the gap is obvious!

However, for scientific research.

The hardware factor is always less than the impact of people.

"Come, Teacher Lu, let me introduce you."

Mr. Wang made a phone call and called a middle-aged man who looked polite to the laboratory:

"This is the head of our technical department, Supervisor Bai."

Bai Dehai took the initiative to stretch out his hand and introduced himself in a friendly manner:

"Hello, my name is Bai Dehai, may I ask if you are..."

While speaking, he glanced at Mr. Wang suspiciously.

Bai Dehai really didn't understand why Wang always let himself come to the department at this time to meet a young man who looked less than twenty years old?

Could it be that this is some relative of the boss who wants to insert it?

No, no.

The company is going to die! What is the point of engaging in these famous halls at this time?

"Hello, my name is Lu Yu."

Lu Yu seemed to see Bai Dehai's doubts, stretched out his hand, and smiled slightly while shaking hands with him:

"I will also introduce myself."

"My name is Lu Yu, I am currently studying at Longke University, and Minister Sun entrusted me to come and help."

"Lu Yu.... You are the one Minister Sun said?!

Bai Dehai reacted quickly, and his eyes showed a look of disbelief!

As the head of the technical department, the news is naturally connected with Mr. Wang at any time, and he also understands in advance that Minister Sun may have to arrange someone to come over to help.

But Bai Dehai never thought that the person who came would be one....

For a moment, his expression was a little complicated, and he didn't know whether to laugh or cry.

"Chief Bai, please give me a general introduction first."

"I don't know that much about cars."

Lu Yu looked calm and chuckled.

"Ok..... bar.

Bai Dehai glanced at President Wang.

Mr. Wang gave him a look and motioned for him to believe Minister Sun!

"Okay."

Bai Dehai sighed helplessly:

"The overall braking system adopted by our future car companies is the future driving force developed by ourselves."

"Compared to the popular programs on the market, there are some advantages of it, but the problems are also not small."

"First of all, the most serious braking problem, the specific situation Wang should have explained to you, I won't say more about conceptual things.... Let's talk about the technical details of this.

He paused, pointed to the specific equipment

, and introduced: "Our permanent magnet synchronous motor is mainly composed of stator, rotor and end cover and other components, the stator is made of lamination to reduce the iron consumption generated by the operation of the motor, which is equipped with a three-phase AC winding, which is combined as an armature..." "The magnetic circuit structure of the built-in rotor

mainly includes three types:

radial type, tangential type and hybrid type...."

Lu Yu listened with relish on the sidelines, and did not interrupt a word.

"That's about the specifics."

"The team members in our department have been working very hard to find out the specific cause of the problem."

"Many people treat the company as if it were home day and day, and they try their best to solve this problem. I was very moved to see it.

"But... Alas.

"But technical problems, if they can't be solved, they can't be solved, and they won't be transferred by the subjective will of any of us."

"It's realistic and cruel."

Bai Dehai shook his head and looked regretful:

"We have investigated the on-board conversion motor (OBC), DC-DC converter and high-voltage distribution group drive on a full scale, and the results can be called 0."

"Especially the reducer, we focused on checking the relevant technology, but we still didn't find anything wrong!"

"I sometimes wonder if I've done something wrong and made God unhappy."

"How else would you punish me like this?"

"Now I do my best and resign myself to my fate, and I can only ... Alas!

The more he spoke, the more painful he became, and finally covered his face, shook his head with a wry smile, and said:

"I don't know why,

Minister Sun will let you come over as a college student."

"But I'm honest, I'm afraid this is not a problem you can solve."

"At present, the problems we are facing in the future, whether they can continue to exist in the future is not certain, even if you mix qualifications with us, it is actually meaningless..." The

reason why Bai Dehai told these to Lu Yu was simply because these things had been held in his heart for too long, and if they were not confided, people would be suffocated!

In his heart, he didn't think Lu Yu could solve the problem at all!

After all, how much can a college student who has just gone to college learn?

Even if it was a person recommended by Minister Sun, Bai Dehai felt that it was not reliable at all, and he must have come to mix seniority.

Lu Yu just listened quietly, without a word to defend himself.

Until Bai Dehai finished speaking, he suddenly opened his mouth and asked:

"Chief Bai, combined with what you just said, I think there is a technical problem.... The core problem with the driver may not be with the reducer.

"Most likely, it is a problem with permanent magnet synchronous motors."

"You and your colleagues, I'm afraid you went in the wrong direction from the beginning."

Bai Zongguan, who originally planned to give up, his face was stunned, and he didn't dare to say anything:

"Permanent magnet synchronous motor?"

"You mean it was the permanent magnet synchronous motor that caused the driver disorder?"

This is a relatively specialized term, which immediately attracted Bai Dehai's attention.

"Yes!"

Lu Yu bowed his head slightly, and further analyzed:

"The reducer of your future car company is the key to affecting the overall NVH performance of the electric drive system, and the main application is 2-speed DHT and 3-speed DHT."

"Under normal circumstances, there is a general brake problem, and the probability of a problem with the DHT system is very large."

"But if you really follow what you said, this aspect has been checked in detail, it should be difficult not to be found."

"In other words, the key to the real problem is not the reducer!"

Bai Dehai hesitated a little, got up and said:

"But even if it is not a problem with the reducer, it should not be a problem with the permanent magnet synchronous motor, right?"

"And although we focus on checking the reducer, the permanent magnet synchronous motor has also been checked many times, at least the possibility of major problems is ruled out."

"Minor problems in general won't affect the driver, right?"

Permanent magnet synchronous motor, although it may seem high-end, is actually an auxiliary device of the motor.

Specifically, the market provides excitation with permanent magnets, which makes the motor structure simpler, reduces processing and assembly costs, and eliminates the collector ring and brushes that are prone to problems, improving the reliability of motor operation; And because there is no excitation current and no excitation loss, the efficiency and power density of the motor are improved.

Although the focus of Bai Dehai and his technical team is not here, they have also checked the relevant content.

Big question.... Definitely non-existent!