Chapter 1622: Chapter 1187: Core Technology (2)
Now, with the efforts of China’s scientific and technological workers, many technologies have caught up, and a few have even surpassed. This is all the result of the relentless efforts of the technological workers. There has never been a shortcut, only that while others were drinking coffee, we were working.
“At what level does this surgical robot stand internationally? How does it compare to similar products abroad?” Professor Fang caressed the machine’s casing, unable to put it down.
Chen Zhi told him, “Our surgical robot, from the chip, robotic arm, software, to the surgical terminal instrunts, etc., are all independently developed. Currently, it is at the leading level internationally, regardless of precision, stability, or durability. We can say that we are fully capable of competing on the sa platform with international giants now.”
Professor Fang sat in a wheelchair, feeling very pleased after hearing this. Isn’t their effort all about not being strangled by others?
Over the years, he had dealt with various countries in Europe and Arica and had a deep understanding of the tactics of multinational corporations in these developed countries. When they are ahead of you, holding core technology, they talk about globalization, which is essentially having you work hard for them.
When they find out that you also hold core technology and have the potential to threaten them, they imdiately change their attitude, trying everything possible to suppress you and eliminate you in the cradle. At this ti, technical blockades and even underhanded tactics are employed, completely devoid of globalization concepts.
When they hold core technology, they talk about respecting intellectual property. When you hold core technology, they try every ans to steal technology from you, totally disregarding intellectual property concepts.
In fact, it all boils down to one word—profit, just using a set of fancy rhetoric to disguise themselves.
“Do you an that this surgical robot leads over developed countries in Europe?”
“That’s correct!”
“Be cautious about technical confidentiality, they will try every ans to steal your core technology and then turn the tables on you.”
Professor Fang had suffered losses in this area before but ca out unscathed, with no significant losses afterward. That was already thirty years ago when he and his ntor invented a special thod for refining tal, which achieved a tal purity higher than the most advanced thods in the world, and at a lower cost.
“At that ti, a major Chinese mining company was in technical exchange with a mining giant from the United States. The ntor, having no guard, ntioned this thod during the exchange. Back then, Arican experts said that this thod was actually outdated and had flaws and that they had more advanced thods, but they could help us evaluate and improve the thod.”
“The ntor was very happy, and imdiately asked to prepare the materials and provide the most detailed technical docuntation for the Arican experts’ assessnt and to help improve it.”
“At that ti, I was cautious and sensed sothing was wrong, so I didn’t present the materials. I secretly pulled the ntor aside and shared my thoughts. The ntor suddenly realized and imdiately ceased the so-called exchange.”
“Later events confird our suspicion, as we later discovered that the United States could never achieve our level of refinent purity. If they really had more advanced technology, they would have shown it already. Moreover, several tis afterward, they tried various ways to steal our technology, but they failed.”
“So we need to be confident but certainly not close off from exchanges. We must maintain our independence during exchanges and never blindly worship Europe and Arica. Learn from them, but don’t blindly idolize them.”
Perhaps Professor Fang felt that Yang Ping and Chen Zhi were both engaged in technology, and as an elder, he couldn’t help sharing so experiences—a desire to prevent young people from stepping into the pits he once fell into.
“Also, never believe their claims of learning technology through cooperation; that’s all deceitful. Core technologies can’t be learned through cooperation. During cooperation, you must maintain independent research without relying on them. They use this dependency to eliminate our resolve for independent research. Eventually, ti is wasted, and no core technology is mastered. Just think, how could people hand over their skill to earn a living? Teach the apprentice, starve the master—our ancestors understood this truth, yet many in the scientific community don’t.”
Oh no, here cos the preaching again. Professor Fang realized he was over-reaching. He originally just ca to see the surgical robot, but ended up lecturing the young people. Yet, sotis, he couldn’t help himself.
“How does this robotic arm achieve control?”
Even though Professor Fang was an expert in tallurgy, he was very familiar with these chanical principles too, because an excellent tallurgy expert not only possesses chemical knowledge but also the capability to convert chemical principles into processes, which involves certain machines.
In a surgical robot, the robotic arm, capable of precise path and force control, performs basic operations such as cutting and suturing. It directly determines the doctor’s operational delivery and feedback. The robotic arm is also one of the core components of robot system design.
“We use independently developed electronic control technology, with no cable connection between the terminal instrunts and the host, but instead an electronic signal connection. The advantage of this is more precise, stable, and flexible control. The drawback, however, is that the micro-motor of the terminal instrunt is challenging to make, and the electronic signal conduction requires a very strong anti-interference ability. However, we have solved these technical difficulties.”
The core power of the currently mainstream surgical robots cos from the linear motor, which directly drives the robotic arm to complete precise movents.
The linear motor differs from the rotary motor as it doesn’t need to convert motion forms through gears or transmission belts. Electrical energy is directly converted into linear displacent, achieving micron-level precision. This working thod fits the stringent requirents for precision and stability in surgical scenarios very well.
Professor Fang also considered the possibilities of this approach and beca very interested in the surgical robot. He mused about whether he could utilize his professional knowledge to provide so beneficial suggestions, such as improving the raw materials of so critical components.
“Electromagnetic drive forms the foundation of the linear motor. Currently, we have mastered the most advanced technology in this regard, and it is by leveraging these technologies that we manufactured the world’s smallest linear motor, with a power far exceeding others.”
The coil set is fixed to the stator part of the motor, while the permanent magnet array is installed on the mover. After power is applied, the coils generate an alternating magnetic field, which interacts with the permanent magnet field to push the mover along the guide rail. By configuring multiple sets of linear motors, the movents such as translation, rotation, and gripping of the robotic arm are respectively controlled. For instance, the advance and retreat trajectory of the needle holder during suturing is entirely determined by the displacent curve of the linear motor.
Position feedback systems are crucial for precision control. Grating or magnetic grid sensors monitor the mover displacent in real-ti. Every micron of position change is fed back to the control system. The main control computer of the surgical robot compares data thousands of tis per second, dynamically adjusting the current output. When the robotic arm needs to complete a 0.1 mm precise cut, the control system will complete the path correction within 20 milliseconds, ensuring the actual movent deviation from the planned path does not exceed ±3 microns.
The contactless transmission characteristic brings significant advantages. Traditional screw transmission exhibits chanical wear and gap errors. The linear motor maintains a 0.5-1 mm air gap between the mover and stator, achieving complete physical isolation. This design allows the robotic arm to maintain its initial precision even after 8 continuous working hours, making it particularly suitable for long-duration operations in neurosurgery. Testing data from a certain brand’s surgical robot shows that after a million reciprocating movents, the positioning accuracy decay of the linear motor does not exceed 0.8%.
The safety protection chanism encompasses multiple safeguards. Temperature sensors embedded in the coil winding automatically activate the cooling system when the motor temperature exceeds 65°C. Dual redundant position sensors work in parallel, imdiately cutting off the power when data variance exceeds the safety threshold. A certain model’s surgical robot linear motor is equipped with an ergency brake module, capable of locking motion components within 30 milliseconds to prevent accidental patient tissue damage.
Material selection directly affects performance. The mover support is made of carbon fiber composite materials, ensuring strength while reducing the mass of the moving parts. The coils use high-temperature-resistant enaled wire, with the insulation layer able to function normally in a 150°C environnt. The guide rail surface of a certain manufacturer’s linear motor is coated with diamond-like carbon, reducing the friction coefficient to 0.02, decreasing energy loss during robotic arm movent by 37%.
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