Chapter 402: Bionic Synchronous Robotic Arm

Of course, this technique is also very difficult. And this is not just a technology, it involves many fields, from information control systems, to hardware systems, to the entire fly-by-wire control system, which is very complex.

Among them, the most rare or core one is the fly-by-wire control system, and the other is the information control system.

To put it simply, the data of the human arm movement is synchronously transmitted to the robotic arm, so that the person can flexibly control the robotic arm as if using the arm.

The principle is simple, but the actual technology is complicated. The first is the technology for the collection of human arm motion information, which requires the sensor worn on the body to accurately capture the movement signal of the arm.

There are currently three mainstream solutions to this.

The first is to use the brainwave control scheme, that is, the brain-computer control technology of the recent fire, which is actually to use the brainwaves generated by thinking and imagination to control the movement of the relevant manipulator.

When we imagine an event, a picture, or an object, the brain waves emitted are different. Brain-computer control technology uses our different brain waves to control the device.

For example, when your brain imagines an idea of moving forward, your brain releases such brain waves. The brain-computer system recognizes these brain waves and converts them into corresponding electrical signals to control the device to move forward.

At present, this technology has been used in a number of fields, including the brain-computer-controlled wheelchair for high paraplegics. The patient can control the wheelchair through the brain to perform motor arrest and so on.

There is also the use of this brain-computer control technology to carry out text-related input. It is said that the input speed can reach 70 words per minute, which can be said to be very fast.

At present, some science and technology companies want to use this brain-computer control technology to develop related bionic robotic arms (prostheses), so that those with disabilities can also use this bionic mechanical prosthetics to obtain the corresponding motor operation ability.

Although the progress in this area is relatively slow, there are still many companies that have developed the prototype of related bionic mechanical prosthetics. Although this is still a long way from practicality, the most important step has already been taken, and it will only need to be continuously developed and improved in the future.

The second solution is to use sensors to record limb movement tracks for operation control.

Each of our limbs, such as the movement of arms and fingers, has a trajectory displacement in three-dimensional space. This solution is to use the relevant sensors worn on the hand to record these trajectory movements, and then synchronize them to the robotic arm to realize the synchronous movement of the robotic arm and the human arm.

The third technology is a bionic control technology that uses electromyography signals to control the movement of the manipulator in real time.

The electromyography signals and joint angle signals of the muscles of the upper limbs of the human body during flexion and extension exercises on the vertical plane are collected, and the processed electromyography signals and time signals are input to a neural network predictor to predict the joint angle.

The predicted joint angle is used as the control signal of the virtual manipulator to control the manipulator to do the same movement as a human.

The test results show that the maximum mean square deviation between the movement trajectory of the manipulator and the angular trajectory of the elbow joint of the human upper limb is less than 2°, and has a strong correlation, and the movement of the manipulator is controlled by electromyography signals.

However, this technology is still not mature enough, and its main problem is that the capture of these electromechanical signals is not accurate enough, and it is easy to be disturbed by human bioelectricity and surface static electricity.

So at present, the most used and the best solution is even the second solution. In fact, the research on the related technologies mentioned in this set of solutions has always belonged to the key scientific research projects of Haoyu Technology.

Because this technology is not only related to the research and development progress of their related bionic synchronous robotic arm, but also related to the launch of their upcoming VR glasses. Therefore, the research and development of this technology began very early, and there have been good results so far.

In addition to the control handle currently used, this kind of wearable gloves with sensors have also become a key area of research for many VR manufacturers.

With this wearable control glove, VR glasses users can control a lot of functions. You can even experience grabbing objects in front of you with your hands, or touching objects in front of you, etc., and experience the functional feeling that some interactive devices can't experience before.

The sample team of the automated mechanical technology research laboratory wants to use this set of technical achievements that have been initially developed to control the robotic arm.

In fact, the principle of the two is basically the same, except that the wearable gloves used on the VR eye device control the virtual limbs in the VR virtual world. On the other hand, the Automated Machinery Technology Research Laboratory uses this wearable glove to control a real manipulator.

It's just that the technical difficulty of this realistic manipulator is much higher than that of manipulating a virtual manipulator in the virtual world.

Manipulate the virtual device, and related problems can be corrected and compensated by the program. However, to operate a real manipulator, all of these require the coordination of hardware and software.

If nothing else, let's just say that the complex parts on this manipulator, many sensors, and some related instruction set program groups, etc., as well as the coordination and unification between these complex equipment, this is not something that can be developed casually.

Again, it is a complex and systematic engineering project that covers a wide range of disciplines. Although Wu Hao's scientific research strength is constantly strengthening, their advantage is still in information technology, and they are still relatively weak in hardware technology, especially basic technology.

And this has brought a lot of unexpected difficulties to the entire R&D team, some of which can be solved with money, but some of which cannot be solved with money.

Therefore, during the whole project research and development process, Wu Hao has also been paying close attention to it, and personally invested in the relevant research and development, helping the R&D team solve many thorny problems.

There are also some problems that can only be solved with the R&D team members, such as some materials and components. On the one hand, they have to figure it out on their own, and on the other hand, they turn to some other suppliers of related equipment and components.

Even in terms of some materials and important load-bearing and pressure-bearing components, he turned to the relevant military enterprises for help, hoping that they could manufacture customized parts for him in this regard.

Fortunately, he is a supernumerary expert, so there is no big problem. Moreover, the price of this kind of customized parts is relatively high, and these companies are also happy to accept these private orders.