The experts first returned to a small conference room next to the lecture hall, discussed in it for more than ten minutes, and finally wrote an appraisal report written by Sun Min, the general content of which is that Ouyang Kang of Mingxi University of Technology undertook the subject to meet the project requirements, and the Danrui 03 machine tool developed by the expert appraisal, Yunyun, which is also a common routine of the appraisal report.

Song Xiujie, as the leader of the appraisal team, signed the report, and the rest signed in the column of appraisal experts.

Afterwards, everyone returned to the lecture hall. Song Xiujie, accompanied by An Xiangping, walked onto the podium and read out the appraisal report, and the audience once again burst into thunderous applause. Ouyang Kang stepped forward to shake hands with Song Xiujie, and the cameras in the audience clicked together, and the flash illuminated the entire lecture hall.

After the appraisal meeting, Ming Polytechnic arranged a dinner to entertain the expert group and other guests. After the banquet, the school office of Ming Polytechnic University enthusiastically said that it could arrange a little other entertainment for the VIPs, but everyone politely refused on the grounds of hard travel, and then returned to the Ming Polytechnic International Exchange Center where they stayed to rest.

Tang Zifeng returned to the room and called Xiao Wenjun first, focusing on asking his son how much milk he ate today, how many he had and other important things, and then asked how the rest of the family was doing. After chatting about family life, he told Xiao Wenjun about today's appraisal meeting, which shows that all the experts believe that the algorithm developed by Ouyang Kang is unique, and the performance of Danrui 03 machine tool is also satisfactory.

"Have you ever asked Xiaohui if there is any obvious difference between Ouyang Kang's algorithm and Leiden's?" Xiao Wenjun asked.

Suspecting that Ouyang Kang had plagiarized Leiden's algorithm, Xiao Wenjun specially asked Yu Xiaohui to search for the cutting algorithm patent applied by Leiden for comparison with Ouyang Kang's algorithm. Of course, Tang Zifeng can't see this difference in algorithms, but Yu Xiaohui can see it.

Tang Zifeng said: "I asked Xiaohui, and she said that the algorithm proposed by Ouyang Kang is obviously different from Leiden's algorithm, and it should be deliberately avoiding Leiden's patent." ”

"So, this Ouyang Kang's level is still quite high?" Xiao Wenjun said.

"Yes, if you work harder, you can surpass me. Tang Zifeng said in an emotional tone.

Xiao Wenjun grinned and said, "Hey, how can I smell the sour smell of someone's words through the wireless base station." ”

"At the banquet arranged by Ming Polytechnic tonight, there is a sour soup fish, and what you smell must be the smell of sour soup fish. ”

"Uh-huh, that's good. Don't be sour, you have a specialization in the art industry, and you also have your expertise, so you don't have to be better than others in everything, right?"

"My wife is right, I am indeed a little floating. ”

"Let's keep our feet on the ground. Okay, I'll go and coax your son first, and you should rest early. ”

"My wife has worked hard, good night. ”

"Good night!"

Hanging up the phone, Tang Zifeng smiled helplessly, could it be that his jealousy of Ouyang Kang was so obvious that even Xiao Wenjun could hear it?

"Ding-dong, ding-dong!"

The doorbell rang.

Tang Zifeng went over and opened the door, and it was Yu Xiaohui standing outside the door. She was holding a laptop in her hand and had a mixed expression on her face.

"Uncle Tang, are you resting?"

"Not yet, come in. ”

Yu Xiaohui followed Tang Zifeng into the house, and after closing the door, Yu Xiaohui said, "Uncle Tang, there is a situation, I want to report it to you." ”

"You sit down and say, what's the situation, why are you so serious?"

Tang Zifeng pointed to the sofa in the room, beckoned Yu Xiaohui to sit down, and asked with a smile.

Yu Xiaohui is a very serious girl, and she is very serious about small things, Tang Zifeng is used to it. Seeing that her face is a little solemn now, Tang Zifeng is not worried, and thinks that it may be a small matter such as the homework in school being half an hour late.

Yu Xiaohui said: "Uncle Tang, didn't you say that you suspect that there is something wrong with Professor Ouyang's topic? I just did a simulation on the computer and did find some problems. ”

Tang Zifeng shuddered, and the smile on his face disappeared immediately, and he asked, "What problem did you find?

"That's right, today Professor Ouyang introduced his cutting algorithm ideas, although he did not introduce the details, but I can basically design a simplified algorithm according to the ideas he introduced, simulating the cutting process of the machine tool. I just made a dynamic simulation program on the computer to imitate the tool's passing strategy, and it turned out that it was completely different from the demonstration of the Danrui 03 machine. ”

Yu Xiaohui said, spread out the notebook, and demonstrated it to Tang Zifeng. Yu Xiaohui's program simulates the actions of the workpiece and the tool during the cutting process, even when an actual machine tool is running.

"Uncle Tang, this afternoon in Professor Ouyang's laboratory, I carefully observed the cutting process of Danrui 03 machine tool, its tool strategy is completely different from the way I am simulating now. Yu Xiaohui explained.

There is a cover outside the machining area of the CNC machine tool, which is used for protection. The cover is usually made transparent so that the operator can observe the process and detect any unexpected situations in time.

In the afternoon, when Ouyang Kang asked the students to demonstrate the cutting operation of the Danrui 03 machine tool, everyone saw the movement of the workpiece and the tool through the transparent cover, but Tang Zifeng lacked understanding of technology and couldn't see any fame, so he didn't pay special attention. Yu Xiaohui is a Ph.D. in the Department of Mechanical Engineering at Tsinghua University, and her daily research is on the cutting process, so she is naturally more careful when observing, and at this time, she can find that there is a difference between it and the way of computer simulation by memory.

"Is your simulation reliable?" Tang Zifeng asked seriously.

Yu Xiaohui nodded vigorously and said, "Reliable, I completely designed it according to the algorithm ideas that Professor Ouyang said, and there can be no mistakes." ”

"So, are you sure that Ouyang Kang's machine tool is indeed not like this?" Tang Zifeng asked again.

Yu Xiaohui was not so sure this time, she hesitated and said, "I remember that it wasn't like this." But I don't know if I'm mistaken, and I can't compare it now, so I can only say it's a doubt. ”

Tang Zifeng picked up the phone on the table and dialed the room number directly. Hearing the other party pick up the phone, Tang Zifeng said: "Old Sun, didn't you shoot a video in Ouyang Kang's laboratory today? You take the DV machine to my room right now, by the way, don't forget to bring the video adapter cable." ”

After a while, Sun Min came over with a pocket digital video camera, and Guan Yong followed behind him. Tang Zifeng asked Yu Xiaohui to close the door, and then instructed Sun Min to connect the camera to his laptop with a video cable and start playing the video of Sun Min's Danrui machine tool running.

Sun Min filmed this video to bring back to the engineers of the Canglong Research Institute, and this kind of information is very precious to experts who know it. Danrui 03 machine tool is the result of the Ministry of Science and Technology, and Ouyang Kang does not have the right to keep secrets. In addition to Sun Min, experts from other units also used DV to record the video.

"This is it!"

After fast-forwarding for a while, Yu Xiaohui pointed to the screen of Tang Zifeng's notebook and said loudly.

Everyone leaned their heads over, and Yu Xiaohui opened the simulation program on his laptop at the same time, placing the two screens side by side for everyone to compare. This time, even Tang Zifeng can see that the tool operation mode of Danrui machine tool is very different from the results simulated by Yu Xiaohui, and it is clearly two modes.

Sun Min and Guan Yong didn't understand what was going on at first, but after hearing Yu Xiaohui's explanation, their faces became ugly. These two are the older generation of machine tool engineers, and they are not familiar with the software simulation method, but they can roughly simulate a set of tool strategies in their minds according to the algorithm Ouyang Kang said.

When they compared the results they thought of with the results of Yu Xiaohui's simulation, they knew that Yu Xiaohui's simulation was correct. Comparing the simulation results of Yu Xiaohui with the real operation of the Danrui machine tool shown on the video, the problem can be seen.

"The strategy of this machine tool is not the same thing as the algorithm introduced by Ouyang Kang. Sun Min said with a dark face.

"I can see that it's kind of like Layton's technology. Guan Yong said, "Chief Engineer Kang has a few high-hard curved machine tools from Leiden over there, and I have been to see them. Chief Engineer Kang meant at that time that he wanted us to help develop similar machine tools, but later we felt that we couldn't take it, so the matter was put aside. In retrospect, this is what Leiden's machine tool strategy should have looked like. ”

In other words, Ouyang Kang did steal Leiden's technology, the algorithm he reported is one thing, and the algorithm he actually uses is another. Tang Zifeng said.

Sun Minhu said suspiciously: "It shouldn't be." We have seen that machine tool, and the control chip it uses is the Mingxin No. 1 developed by Ouyang Kang himself, doesn't he say that the core No. 1 integrates the algorithm he proposed?"

"It's entirely possible that he lied. Guan Yong said, "What is integrated in Mingxin No. 1 is Leiden's algorithm, not the algorithm he reported." ”

"But what's the need for this?" asked Yu Xiaohui.

Guan Yong said: "If he uses Leiden's algorithm, it is an infringement, and the Ministry of Science and Technology will not approve it." So, he wants to develop a set of autonomous algorithms. However, it may be that the performance of the independent algorithm he developed was problematic and could not meet the requirements, so he stole Leiden's algorithm and made this Mingxin No. 1. ”

Yu Xiaohui said: "But this means that Professor Ouyang has cracked Leiden's algorithm. Mr. Xiao told me that Leiden's algorithm is very complex, and it is the core secret of Leiden, and it is impossible for others to have the opportunity to plagiarize it completely. Professor Ouyang not only cracked its algorithm, but also developed a special chip, which is too difficult. ”

"Yes, if he can do this, there is no need to hide it from the Ministry of Science and Technology. Sun Min said, "Being able to completely crack Leiden's algorithm is even greater than independently developing a set of algorithms." ”

(End of chapter)