When will I have a long tassel?

The experts first returned to a small conference room next to the lecture hall and discussed for more than ten minutes. Finally, Sun Min wrote an appraisal report. The general content was that the project undertaken by Ouyang Kang of Mingxi University of Science and Technology met the project requirements. The Danrui 03 machine tool developed passed the expert appraisal, and so on. This is also a common routine in appraisal reports.

Song Xiujie, as the leader of the appraisal team, signed the report, and the rest of the people signed the appraisal expert column.

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

After the appraisal meeting, Mingli University arranged a dinner to entertain the expert group and other guests. After the banquet, the Mingli Polytechnic School Office enthusiastically offered to arrange some other entertainment projects for the distinguished guests. Everyone declined due to the hard journey, and then returned to the Mingli Polytechnic International Exchange Center where they were staying to rest.

Tang Zifeng returned to the room and first called Xiao Wenjun. The focus was to ask about important things such as how much milk his son had eaten today and how many times he had pooped. Then he asked how the rest of the family was doing. After chatting about home affairs, he told Xiao Wenjun about today's appraisal meeting, explaining that all experts believed that the algorithm developed by Ouyang Kang was unique, and the performance of the Danrui 03 machine tool was also satisfactory.

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

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

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

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

"Yes, if you work harder, you can surpass me." Tang Zifeng said with emotion.

Xiao Wenjun chuckled and said, "Hey, how come I can smell the sourness in someone's words even through the wireless base station."

"Tonight, at the banquet arranged by Ming Ligong, there will be a dish of fish in sour soup. What you smell must be the fish in sour soup."

"Yeah, that's good. Don't be upset. There are specialties in the arts, and you also have your own expertise. There's no need to be better than others in everything, right?"

"My wife taught me the right lesson, I am indeed a little drifting."

"Then keep your feet on the ground. Okay, I'm going to coax your son first, and you should rest early."

"Thank you for your hard work, wife. Good night."

"Good night!"

After 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!"

Doorbell rang.

Tang Zifeng went over and opened the door, and it was Yu Xiaohui who stood outside the door. She was holding a laptop in her hand, with a complicated expression on her face.

"Uncle Tang, have you rested?"

"Not yet, come in."

Yu Xiaohui followed Tang Zifeng into the house. After closing the door, Yu Xiaohui said: "Uncle Tang, there is a situation that I want to report to you."

"Sit down and tell me, what's going on, why are you so serious?"

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

Yu Xiaohui is a very serious girl, and she takes every little thing seriously. Tang Zifeng is used to it. Seeing that her face was a little solemn now, Tang Zifeng was not worried, thinking that it might be just a small matter like the school assignment being half an hour late.

Yu Xiaohui said: "Uncle Tang, didn't you say that you suspected that there was a problem with Professor Ouyang's project? I just did a simulation on the computer and I did find some problems."

Tang Zifeng trembled, and the smile on his face immediately disappeared. He asked: "What problem did you find? What is the simulation you are talking about?"

"It's like this. Today Professor Ouyang introduced his cutting algorithm idea. Although he didn't introduce the details, I can basically design a simplified algorithm based on the idea he introduced to simulate the cutting process of the machine tool. I just did it on the computer I made a dynamic simulation program to simulate the cutting strategy of the tool, and found that it was completely different from the demonstration of Danrui 03 machine tool."

Yu Xiaohui said, unfolding his notebook and demonstrating it to Tang Zifeng. The program created by Yu Xiaohui simulates the movements of the workpiece and the tool during the cutting process, even if an actual machine tool is running.

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

There is a cover outside the processing area of ​​CNC machine tools for protection. This outer cover is usually made transparent so that operators can observe the processing process and detect various unexpected situations in time.

In the afternoon, when Ouyang Kang asked students to demonstrate the cutting operation of Danrui 03 machine tool, everyone saw the movement of the workpiece and the tool through the transparent cover. However, Tang Zifeng lacked understanding of the technology and could not see any tricks, so he was not particularly interested. pay attention to. Yu Xiaohui is a Ph.D. in the Department of Mechanical Engineering at Tsinghua University. She studies the cutting process on weekdays. Naturally, she is more careful when observing. At this time, she can find the differences between it and computer simulation based on her memory.

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

Yu Xiaohui nodded vigorously and said, "It's reliable. I designed it completely according to the algorithm idea mentioned by Professor Ouyang. There can be no mistakes."

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

Yu Xiaohui was not so sure this time. She hesitated and said: "I don't remember it like this. But I don't know if I remembered it wrong, and I can't compare it now, so I can only say it is a question."

Tang Zifeng picked up the phone on the table and dialed the room number. Hearing the other party answer the phone, Tang Zifeng said: "Old Sun, didn't you take a video in Ouyang Kang's laboratory today? Bring the DV player 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 the operation of the Danrui machine tool recorded by Sun Min.

Sun Min shot this video to take it back to the engineers at Canglong Research Institute. This kind of information is very precious to knowledgeable experts. The Danrui 03 machine tool is the result of a special project by the Ministry of Science and Technology, and Ouyang Kang has no right to keep it secret. In addition to Sun Min, experts from other units also used DV to record the video.

"right here!"

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

Everyone leaned their heads together, and Yu Xiaohui opened the simulation program on her laptop at the same time, placing the two screens side by side for everyone to compare. This time, even Tang Zifeng could see that the Danrui machine tool's tool operation mode was completely different from the results simulated by Yu Xiaohui. They were clearly two modes.

Sun Min and Guan Yong didn't understand what was going on at first, but after hearing a few explanations from Yu Xiaohui, their faces became ugly. These two were both older generation machine tool engineers and were not familiar with software simulation, but they were able to roughly simulate a set of tool-moving strategies in their minds based on the algorithm Ouyang Kang mentioned.

They compared their own results with Yu Xiaohui's simulation results and knew that Yu Xiaohui's simulation was correct. Comparing Yu Xiaohui's simulation results with the actual operation of Danrui machine tools shown in the video, we can see the problem.

"The tool feeding strategy of this machine tool is completely different from the algorithm introduced by Ouyang Kang." Sun Min said with a dark face.

"I can see that this is a bit like the technology of the Leiden Company." Guan Yong said, "General Manager Kang has several high-hardness curved machine tools from the Leiden Company. I have seen them. General Engineer Kang at that time The idea was to let us help develop similar machine tools, but later we felt that we couldn’t take it, so we put the matter aside. Now that I think about it, the tooling strategy of Leiden Machine Tools should be like this.”

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

Sun Min said suspiciously: "It shouldn't be. We have seen that machine tool. The control chip it uses is the Mingxin No. 1 developed by Ouyang Kang and the others. Didn't he say that the Mingxin No. 1 integrates the algorithm he proposed? ?”

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

"But why is this necessary?" Yu Xiaohui asked.

Guan Yong said: "If he uses Leiden's algorithm, it will be an infringement and the Ministry of Science and Technology will not approve it. Therefore, he wants to develop a set of independent algorithms. However, there may be problems with the performance of the independent algorithm he developed and it will not meet the standards. According to the requirements, he stole Leiden’s algorithm and made this Bright Core One.”

Yu Xiaohui said: "But this means that Professor Ouyang has cracked Leiden's algorithm. Teacher Xiao told me that Leiden's algorithm is very complex and is the core secret of Leiden Company. It is impossible for others to have a chance." Total plagiarism. Professor Ouyang not only cracked its algorithm, but also developed a special chip. This 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 the Leiden Company's algorithm is even greater than independently developing an algorithm. Woolen cloth."