Zhang Zhiruo's house problem was solved, and Yang Pingfan's heart was solved, and a few days later, Li Suifeng called him to go to Company X together, saying that Liu Yuan wanted to show them a good thing.

Company X's Innovation Workshop is in the Jiangbei High-tech Development Zone, Yang Pingfan drove across the bridge across the river and came to the innovation workshop of Company X.

I saw that the walls around the workshop were five meters high, and there was a circle of barbed wire at the head of the wall, and every five meters there was a disc-like thing like a small antenna receiver, rotating slowly, Yang Pingfan looked at it, "This can't be a drone jammer, right?"

Li Suifeng, who was sitting in the co-pilot, nodded, "That's right, it was produced by the authentic military, did you see that big disc, it was an air defense radar!"

"Professor Li, it seems that Company X is much higher than ours. ”

"Liu Yuan, this kid has taken shit luck, and now Company X is a high-tech enterprise comparable to HW in China, and I have to admit that it is indeed better than us to get such treatment. ”

The inspection of entering the workshop is also very strict, there is a special inspection area in front of the gate, the car is parked on it, and the four millimeter-wave radar beams scan the car 360° without dead angles, and there is no problem before it can be released.

The two got out of the car, and a beautiful female secretary wearing a black professional skirt smiled sweetly at the two, "Mr. Liu is in the test field, and I will take the two of you over." ”

The tires rubbed against the ground violently, the smoke left a long tail on the path of the vehicle, and the sound of sharp corners reminded people of those nights when the blood boiled on Akinayama Mountain due to drifting in the first word.

When the car approached a five-in-a-row, hairpin bend, and everyone thought it was going to lose control and slide out of the runway, the next second it drifted continuously and made a perfect turn.

Everywhere I passed, I didn't knock over a single cone.

At that moment, Yang Pingfan and Li Suifeng even thought that it was not a person driving it.

"That's right, it's not a human who drives this car that even looks like an AE86, it's the latest generation of electric driverless cars jointly developed by Company X's Power Design Lab, Imperial Capital University and Suzaku University, called Chenglei. ”

Liu Yuan walked up with a smile and introduced that the staff at the scene were either wearing uniforms or white coats, but Liu Yuan was wearing a black shirt, which was very conspicuous, Yang Pingfan had keen vision, and even saw a few people wearing green military uniforms in the corner.

"Liu is always ready to develop unmanned racing cars? Sitting in such a car and playing drifting, I'm afraid everyone will vomit. ”

Hearing Li Suifeng's question, Liu Yuan gave a thumbs up, "Professor Li really said that the purpose of this research is not to show off skills, but to improve the emergency response ability of autonomous driving in dangerous situations." ”

"Is Company X ready to enter the autonomous driving industry?"

"It's pretty much the same, but we only provide technical support, and the current driverless technology still has big drawbacks, and can only handle relatively simple driving situations, such as keeping a certain distance from other vehicles, which obviously cannot meet the needs of driverless driving on the road. ”

Liu Yuan beckoned as he spoke, and a man in his thirties wearing highly myopic glasses ran over, "Let me introduce, this is the person in charge of the unmanned driving technology of Company X, Dr. Xia Yanbin." ”

Xia Yanbin was very excited when he saw Li Suifeng, "Hello Professor Li, I am your alumnus, your deeds of abandoning literature and business to found Galaxy Technology are still circulating in the school, and the younger brothers and sisters worship you very much." ”

The praise made Li Suifeng very comfortable, and Liu Yuandao next to him said, "Tell the two friends about the new achievements." ”

"We are working to make autonomous driving capable of handling situations such as "emergency braking" or "ice", and to solve this problem, it is necessary to develop autonomous vehicles that can use all the friction between the tires and the road surface to protect the car and its occupants from harm.

Training a self-driving car to drift is a great way to solve the problem.

Imagine that the direction of the vehicle is not the same as the direction of the front of the car, and you have to step on the clutch with the gear lever, the human driver may be confused in the face of this situation, in fact, the average car will prevent the vehicle from entering this state.

Drifting, on the other hand, allows a car to pass through very narrow roads without colliding with any obstacles, and by drifting, we can get two extreme examples of driving physics.

If we can control autonomous vehicles well in the safest and least safe situations, it will be relatively easy to control autonomous vehicles in other states. ”

Yang Pingfan had just bought a car, and during this time, he studied various vehicle magazines when he had free time, and said: "I remember that this idea was put forward a long time ago." ”

"That's right, but it has not been possible to achieve it in reality, because of the traditional fuel consumption car, the engine and the gearbox have a delay effect, and the microcomputer can not accurately control the engine output power, electric vehicles can be solved, but the early electric vehicles because of the battery output power problem, the steering power itself is insufficient, it is difficult to drift. ”

"Until the Super Battery comes along—"

"That's right," Dr. Xia glanced at Liu Yuan, his eyes full of admiration, "For human racers, a race or performance like "Initial D" is a way to test the ability of a racer, and we need to invest more in order for AI and electric vehicles to learn this technology."

The front and rear super batteries provide ample power for the 700V/300KW/20kWh electric drivetrain, and the custom-made front and rear suspension and columns enhance the spring rate/damping coordination, and enhance the ability of the lightning to withstand stronger structural loads.

There's also a full roll cage, bucket seats, and six-point seat belts for improved safety, steer-by-wire + upgraded steering rack and steering range for greatly improved steering, braking system with large brakes + independent angle-by-wire braking system, integrated dual-antenna unit for motion measurement, real-time car control computer, and Linux-based assisted computing network.

Chenglei is not equipped with lidar, because the lidar in the face of bad weather, such as rain, snow and haze, the laser will be greatly discounted, Chenglei relies on a pair of Beidou positioning systems on the roof of the car to track the position of the car, the error is within 1cm.

As for the implementation of automatic drift, it relies on the LEAD-LAG controller framework, with which the Chenglei can track the path according to the rotation rate of the vehicle speed vector, and at the same time stabilize the sideslip with yaw acceleration.

Then, combined with the nonlinear model inversion and low wheel speed control, the state derivative required to achieve drift can be obtained. ”

Xia Yanbin said a bunch of things, and the two of them were in awe, although they didn't understand it very well, but it felt like it was very good, Yang Pingfan was interested, and wanted to sit in it and try the feeling of drifting over the corner, but the mobile phone in his pocket rang, it was Lulu calling, and his tone was panicked, "Grandma...... Grandma, she was hospitalized with a sudden cerebral thrombosis!"

When Yang Pingfan heard this, he immediately put the test in the back of his mind, and told Li Suifeng and Liu Yuan about the situation, Liu Yuan said, "Use my car, special license plate, let Xiao Wu send you over, he drove fast enough, Professor Li and I will also go over later." ”

Yang Pingfan nodded, Wu Qifeng was already waiting there when he left the gate of the workshop, got into the car, the electric supercar let out a roar, and went straight to the city hospital, on the way Yang Pingfan also sent messages to Li Lan and Su Yu respectively.

Li Suifeng watched Yang Pingfan go away, and looked back at Liu Yuan, "Mr. Liu, come to me today, I'm afraid it's not as simple as letting me see your unmanned drift, there is a saying in "Nine Songs-Dongjun" that "driving a dragon boat and riding thunder", and the name of your test car is very imposing. ”

Liu Yuan smiled and didn't speak, raised his hand and clicked the bracelet on his wrist, an unmanned golf cart drove to the two of them, Liu Yuan made a gesture of please, and the two got into the car.

"The appearance of two companies, Galaxy Technology and X Company, in one place, is a kind of luck and a kind of fate, Professor Li doesn't think we should do something to be worthy of this fate?"

"What does Mr. Liu mean is ready to cooperate, but there is no intersection between our two companies, I am engaged in genetic engineering, you are engaged in unmanned driving, super batteries, brain networking ......"

Li Suifeng suddenly stopped.

"That's right, it's brain networking, brain networking involves a lot of biological and even genetic things, my scientific research team has encountered a bottleneck in this regard, I know that Galaxy Technology is unique in China in this regard, and even can compete with Monsanite, I can't find other partners besides you." ”

"I don't know what kind of cooperation method Mr. Liu plans to make?"

"Technology stakes, whether they are directly owned by each other or jointly set up a subsidiary, will need to be discussed in detail, but I can assure you that it is a win-win cooperation. ”

Li Suifeng's heart moved, the section of Galaxy Technology has not been able to expand, maybe the brain networking project can bring a new way out to the company.

Liu Yuan smiled and stretched out his hand.

Yang Pingfan arrived at the hospital and rushed directly to the ICU ward, and found that Li Lan had arrived here in advance, Lulu sat on the edge of the bed and wept secretly, Li Lan took him out, "I asked about the situation, and the person was rescued, but the doctor said don't have too much hope, after all, the age is there." ”

As he spoke, he lowered his head, sad.

The two of them silently stared at the old man on the hospital bed through the window, feeling the cruelty and ruthlessness of time for the first time, for the two of them, it was only a little more than a month ago that they were separated from Zhang Zhiruo, but for her, it was nearly eighty years of vicissitudes.

"I'm ashamed," Yang Pingfan's tone was gloomy.

Li Lan glanced at him, "It's not your responsibility. ”

"We all know what happened to her family later, but we sit idly by, she keeps calling me master, but I don't fulfill my responsibilities from beginning to end"

"You know, the butterfly effect...... There are times when we can only respect history. ”

"I understand, but I feel like I have to do something. ”

Li Lan sighed and reached out to grab Yang Pingfan.