Scholar’s Advanced Technological System

9 month 12, the competition is on schedule!

On the day before the competition, Lu Zhou and the others returned to the old campus from the new campus by school bus and lived in a temporary dormitory arranged by the school.

Mattresses and pillows are all ready, only with a set of orders, not paying attention to people even go directly to the individual, after all, although the game time has 72 hours, but the average bedtime to everyone, may even ten Not for hours.

This is the case with Lu Zhou.

His mission is the heaviest, and he needs to finish the most work. He can only take a nap for the next day, so he simply did not bring his clothes and went empty. The first thing that comes to the new dormitory is to sleep in bed.

If you can’t sleep, you have to force yourself to fall asleep.

Woke up at five o’clock the next morning, and at 7 o’clock in the bed with my eyes closed, went to canteen for a breakfast, Lu Zhou and Wang Xiaodong and Lin Yuxiang met and went to the school to prepare for the mathematical modeling contest. Dedicated computer room.

According to the official registration information, the contest has 33 teams from 1338 provinces, municipalities and autonomous regions (including Hong Kong and Macao) and 25347 universities in the United States and Singapore. There are more than 10,000 students in 7, and click on the competition website to download the questions. Participate in the competition.

The competition was co-sponsored by the Higher Education Department of the Ministry of Education and the Huaguo Institute of Industrial and Applied Mathematics. Because of its judging rigor and impartiality, its influence is less than the “Challenger Cup”, but the gold content of the national award is in some sense More than the “Challenger Cup”.

At 7:30 in the morning, there are already 10 teams in the engine room.

Although many people choose to answer questions with their own notebooks, they usually bring the computer to the computer room. After all, only the computer room and the wifi of the library can download thesis from the knowledge network for free. This kind of game is expected to win through the untested data on Baidu, it is better to burn the incense and so the thesis automatically completed.

Teacher Liu came over and circled. He smiled and said hello to Lu Zhou. He didn’t talk about the competition. He greeted some “How about the rest of last night?”, “The dormitory on the old campus is not used to habits.” “The words, then, then wandered outside the computer room, drove back to the new campus to busy their projects.

At eight o’clock, the bell rang.

Everyone quickly landed on the official website to download the title.

According to the rules, the topics are divided into four major questions of ABCD, in which AB belongs to the undergraduate group and CD belongs to the specialist group. Each group selects a question as the target, completes and uploads the md72 code generated by the official website software within 5 hours, and uploads the pdf format thesis corresponding to the md5 code on the day of the end of the competition.

In general, the topic must be controlled within half an hour, and everyone is scrambling to read the questions.

However, when they saw the topic, everyone was dumbfounded.

“Topic-A Changé’s 3rd Design and Strategy for Soft Landing Orbit…Topic-B Creative Fold-able Tablet ?!Fuck? What is the title of this year?”

“MMP, it’s totally different from the training we did!”

“I seem to have done something similar a few days ago. It seems to be the launch plan for the Divine State rocket… but I think that such a mysterious subject matter will definitely not come out, I didn’t expect it…”

“Fuck, Dad, aren’t you an Advanced Algebra ninety-five points? Think about it!”

“I learned Advanced Algebra, but I don’t know how to learn!”

“Designing the table… What is the design of the table, isn’t it four legs? Foldable… We have a spring behind the legs?”

The computer room was quite lively. It can be seen that the fellow students were forced by the whole face of this topic and could not start.

However, there are also masters in it.

For example, the second Study tyrant Luo Rundong in Lu Zhou’s class, this time is calmly communicating with his teammates.

And Liu Rui… There seems to be a very reliable thigh in the team of this kid, and now I have finished reading the topic and started to assign work to two teammates.

Looking at the two questions downloaded from the official website, Wang Xiaodong frowned.

The skybreak began.

Both topics are related to physics.

The previous one involves the orbital calculation in aerospace physics. It is certainly not enough to rely on high school physics knowledge. The B question is very simple on the surface, but it is not much easier than the first question. It involves dynamic motion analysis of the table legs. A series of questions, such as the analysis of material stress, involve not only mathematical modeling, but also a certain degree of involvement in structural mechanics and Material Science and even human engineering.

however……

The “mathematics genius” in the team just got on 2nd year, and even just started physics class.

No way, avoiding the weight is light.

The first physics knowledge is not enough to do it, and the second one can collect data through the network and find ways to translate it into mathematics.

Wang Xiaodong looked towards Lu Zhou, “Do you want to choose B?”

Lu Zhou shook his head: “Choose A.”

“A question?” Wang Xiaodong frowned. “Are you okay?”

“I have already finished studying university physics. Although the aerospace physics seems complicated, in the final analysis, it is only the content of the first three chapters.” After a pause, Lu Zhou swept the team next to him and continued, “And, you see Just in this room, there are already enough people to choose B.”

The AB question is divided separately. In the case of a so scary A question, there will be many candidates for the B question. At this time, it is time to take the courage of “willfully going towards the mountain although knowing that it has tigers”, leaving the wooden bridge to the magnificent army with thousands of men and horses, and walking your own Yangguan Avenue!

Of course, this is also the choice that Lu Zhou made when he was confident in the A question.

Wang Xiaodong expressionless Nodded, naturally understands the meaning of Lu Zhou’s last sentence.

“That line, modeling will be handed over to you.”

“I will handle it.”

Eye contact, two Study tyrants have reached a consensus.

Lin Yuxiang looked at the two teammates who had reached consensus, and asked weakly: “Which…what can I help?”

Wang Xiaodong reveals a smile he thinks is very gentle, saying that he just prepared to say “Give me the hand”, but he hasn’t waited for his feelings on the face, and is burying his head on A4 paper. Lu Zhou, the head does not lift, said unceremoniously: “Bring the rice, send water, please.”

Modeling, programming, and thesis are not lacking, and there is no errand.

Don’t think that lying down is so good to lie down, don’t let this guy do some work, Lu Zhou is not balanced.

Wang Xiaodong: “…”

Lin Yuxiang didn’t complain, and was very nodded: “Hmm, it’s on me!”

The advantage of mathematical modeling and thesis writing by one person is that many jobs that require two people to communicate can be done by one person, and there is no such problem as teammates’ tacit understanding and ability to express understanding.

At the same time, in the case of modeling thesis, Lu Zhou, as Captain, can accurately issue commands to Wang Xiaodong, who is responsible for programming.

As a result, there is almost no disagreement between the players!

There are three problems in the question:

(1) Determines the position of the near-month and far-moon points of the landing preparation track, and the magnitude and direction of the corresponding speed of the third.

(2) Determines the landing track of the Chang’e III and the optimal control strategy for the 6 phase.

(3) Corresponding error analysis and sensitivity analysis for your designed landing orbit and control strategy.

“The summary part is a summary of the full text. This part can be completed after the whole article has been written. The focus is on the analysis of the problem after the restatement of the problem, involving all the ideas of the whole modeling. The soul of the wholesis is here. Binding the ballpoint pen, Lu Zhou tapped the keyboard, wrote the outline of thesis, and began to define the most critical soul for hissis based on the draft of the previous calculation.

[Question 1, in order to get ready for landing preparation for the position of the near-month and far-moon points of the orbit, and the size and direction of the corresponding speed of the Chang’e-3, first use the knowledge of mechanics combined with known conditions for calculation. Using the limit thinking, the motion of the main deceleration phase of the Chang’e-3 is divided into an infinite number of uniform linear motions. Use the Matlab software design program to perform iterative calculations on the main deceleration phase…]

[Question 2, in order to ensure the landing track of the Chang’e III and the optimal control strategy in the 6 phase, it is necessary to aim at the minimum fuel consumption, analyze it on this basis, use the parameters obtained in question 1, and identify the numbers using Matlab software. The algorithm of obstacles in the elevation map, which realizes the recognition of obstacles and the location of landing points, and simulates the optimal landing track by establishing a model…]

[Analysis of the error of the landing orbit control strategy designed in Problem 2, first of all, to enumerate all the factors that may cause the error, analyze it…]

Lu Zhou, who entered the state, is highly focused on the topic at hand.

When the analysis of the problem was completed, he only felt that his brain was sober, and even the idea of ​​the whole thesis had formed a general framework in his mind.

The rest of the work is to translate this outline into the language of mathematics…

For most teams, thesis is usually placed after modeling and programming, but for Lu Zhou, the two can be synchronized!

This will be the biggest advantage of their team!