boyutpedia Chapter 18 What? Exoskeleton?
Chapter 18 What? Exoskeleton?
For the next month, Lu Feng's life trajectory was completely compressed into three points.
Classrooms, library, 302 laboratory.
The spindle speed of the CNC milling machine was increased to 2,000 revolutions per minute.
From the base frame to the quick-release buckles, from the chest plate hinges to the single-axis assist mechanism for the legs.
Each part gradually took shape under his blueprints.
The machining accuracy is strictly controlled to within 0.02 millimeters.
Newton's unique ability, "observational skills," was brought to its fullest potential.
Tiny cracks on the sheet metal, a slight eccentricity of the motor rotor, and micron-level deformation of the connecting parts under stress.
In his eyes, no physical phenomenon could hide from him.
When faced with damping parameter matching problems, he directly retrieved the equations of the multi-scale perturbation method from his mind to verify them.
If the gait control logic gets stuck, go into the internal space to find the Newtonian deductive mechanical transmission model.
Time flew by amidst the sounds of aluminum plates being cut and keyboard clicks.
Late October.
Hong Kong City University Gymnasium.
The final of the first provincial-level mechanical innovation competition.
A huge display platform was set up in the center of the stadium, and the surrounding stands were packed with students from various colleges.
"Over here! Brother Zhou, there's an empty seat over here!"
Zhao Pengfei stood in the third row of the stands, waving his arms.
Zhou Mingyuan escorted Li Hongde through the aisle and they sat down in their seats.
Sun Hao and Wang Bowen followed closely behind.
"This is quite a large-scale operation; even people from the Provincial Department of Education have come." Zhou Mingyuan pointed to the front row, center seat.
Five or six middle-aged men in suits sat on the judging panel, with signs for several leading manufacturing companies in the province displayed next to them.
Representatives from DJI, BYD, and Inovance Technology sat in the guest section, flipping through the competition manual.
Li Hongde opened the program list in his hand and flipped through it directly.
"Teacher, don't bother looking anymore, Lu Feng is in the second half," Zhou Mingyuan said, leaning closer.
"This kid hasn't shown his face much for a month. Do you know what he's been up to?" Li Hongde asked.
Zhou Mingyuan spread his hands.
"I have absolutely no idea."
"He occupied the innermost cubicle of the lab and spent all his time there except when he was teaching."
"I went in to get something last week, and wow, the floor was covered with aluminum scraps and wire ends, just like a car repair shop."
Zhao Pengfei chimed in, "He also borrowed torque sensors and stepper motors from me, quite a few of them."
Li Hongde tapped his fingers on the armrest.
"The secrecy work was done very well."
Let's wait and see.
On the other side of the stands.
Zhang Wei tore open a bag of original flavor potato chips, grabbed a handful, stuffed them into his mouth, and chewed them with a crunching sound.
"Old Lu hasn't even played Three Kingdoms Kill for the past month. He only goes back to the dorm after lights out every night and falls asleep as soon as his head hits the pillow."
My roommate in the next bunk peeked over.
"What exactly is he going to show today? Is he really going to pull out a Gundam?"
"It would be good enough if we could get a little car with wheels." Zhang Wei handed over the potato chips. "Let's watch the show. When he comes on stage, we'll clap our hands and make sure he doesn't fall silent."
It was exactly 9:00 AM.
The host's opening remarks came through the speakers.
After a lengthy speech, the competition officially began.
The first half was mostly dominated by lower-grade students.
First- and second-year students brought all sorts of models to the stage.
"Good morning, judges. This is the smart recycling bin designed by our team."
A sophomore boy stood on the stage, pressing the remote control in his hand.
The trash can lid slowly opened, making a screeching sound of gears grinding together.
On the judging panel, several experts lowered their heads and scored, showing no interest in even asking questions.
"The transmission structure is too simple, and the sensor response delay exceeds three seconds. Next."
The following demonstrations were largely similar, featuring automatic watering devices and simple robotic arms.
Most of them buy ready-made microcontroller development boards and assemble a few servo motors and sensors.
At the company representatives' table, several HR personnel were idly playing with their phones.
These toy-level creations are simply beneath their notice.
"Freshmen and sophomores still have a weak foundation." Zhou Mingyuan yawned.
"They didn't even do basic mechanical analysis; they just pieced things together," Zhao Pengfei commented.
As noon approached, the second half began, with teams of third- and fourth-year undergraduates and graduate students taking the stage one after another.
The art style suddenly changed.
A senior team from the School of Mechanical Engineering at the University of Hong Kong pushed a half-person-high omnidirectional mobile chassis onto the stage.
Four Mecanum wheels, combined with a sophisticated suspension system, enable the vehicle to move horizontally, rotate in place, and overcome obstacles on the display platform.
"We adopted an adaptive fuzzy PID control algorithm to solve the trajectory deviation problem caused by the slippage of the wheel."
The presenter brought up a complex kinematic modeling PowerPoint presentation.
The judges' panel finally stirred.
An expert from the provincial mechanical engineering society picked up the microphone.
What is the chassis's load-bearing limit? How is control precision guaranteed on uneven roads?
The speaker answered fluently.
At the company representative's table, BYD's technical director took out a pen and circled something in the manual.
"This team is pretty good. I'll go get their resumes later."
The next few graduate student teams to take the stage brought out their real equipment.
Some companies optimize joint reducers for industrial robots, while others develop error compensation algorithms for multi-axis CNC machine tools.
A second-year graduate student demonstrated a "micro-nano positioning platform based on piezoelectric ceramics".
Various complex interferograms, stress cloud diagrams, and spectral analysis reports scrolled across the large screen.
The atmosphere at the scene reached a climax.
The experts on the judging panel nodded frequently and even began to exchange ideas and discuss among themselves.
The HR representative from Huichuan Technology stood up, walked to the front of the stage, and handed over a business card.
"Your hysteresis nonlinear compensation algorithm for this micro-nano positioning platform is excellent. Would you be interested in joining our R&D center after graduation?"
They snatched him away on the spot.
"Holy crap, this is a battle of gods." Zhang Wei even forgot to eat his potato chips, staring blankly at the dense partial differential equations on the big screen.
"This is what a real competition looks like. The previous ones were just a joke." My roommate swallowed hard.
Zhang Wei suddenly remembered something.
"Old Lu will be going up later too."
"He's just a freshman, what makes him think he can compete with these graduate students?"
"Isn't this just asking for trouble?"
In the stands, many freshmen were also gripped by the same despair.
The blow was too severe.
Zhou Mingyuan abandoned his nonchalant sitting posture and leaned forward.
"The previous projects were all completed to a very high standard."
"Lu Feng is under a lot of pressure this time."
Li Hongde remained silent, his gaze fixed on the entrance to the waiting area.
As time goes by, the progress bar is dragged to the end.
"Next, please welcome the seventeenth group of contestants."
The host's voice echoed throughout the stadium.
"From Lu Feng, a freshman in the School of Mechanical Engineering at Gangcheng University."
"Entry Project: Demonstration Prototype of Nonlinear Flexible Joint and Wearable Exoskeleton Based on Multi-Scale Perturbation Method"
The entire room fell silent for a second.
Then a low murmur erupted.
"Freshman year?"
"Exoskeleton?"
"Multi-scale perturbation method?"
On the judging panel, several experts looked at each other in bewilderment.
The technical executives at the company's booth stopped talking and looked up at the display stand.
The combination of these words creates an extremely incongruous and absurd feeling.
How can a freshman who hasn't even finished theoretical mechanics dare to touch a doctoral-level mathematical tool like the multiscale perturbation method?
They even made an exoskeleton prototype?
"To attract attention and gain popularity."
The expert from the provincial mechanical engineering society shook his head and threw his pen on the table.
"Nowadays, students will put any word in their headlines just to grab attention."
Li Hongde and Zhou Mingyuan were also taken aback when they heard this: "What the hell?"