Help all mankind

Servo motors are the basis of modern industrial manufacturing. Since the advent of computers, chips have gradually replaced humans in various industries.

Most of us are very strange to the professions that have been replaced, such as telephone operators, such as bank data checkers.

Most of the industries that were robbed of their jobs at the beginning were mostly related to data. These are well understood, and people who are more capable of processing data can never beat computers.

But soon, computers began to take over some fine human labor.

The servo motor is a bridge that allows the computer to gain the ability to move at the physical level.

Different from ordinary motors, they start to spin quickly when they are powered on. They are suitable for powering airplanes and cars, but using them to precisely control the movement of the arm is far-fetched.

The servo motor is completely different. First of all, it is not the kind that turns directly on the battery. Instead, it needs to be connected to a drive motherboard controlled by a small chip, which is then connected to the computer's circuit.

In layman's terms, the servo motor is integrated with the computer.

Because of the huge difference in structure, the servo motor can rotate a very small and precise angle after receiving a pulse command from the computer.

This is the difference between a servo motor and a general power motor. It is good at rotating the specified angle according to the command, which can be very accurate. At the same time, after turning to this angle, it will be stuck at that angle and motionless until it receives a new command.

The power motor will rotate when it is powered on. After power off, it will continue to rotate for a period of time due to inertia, and it cannot be determined that it will eventually stop.

But the servo motor is different. It needs to be energized and consumes electricity even when it is not rotating, and it is firmly maintained at that angle, even if it is broken by hand.

Only after receiving the command from the computer, will it rotate the specified angle according to this command, and the computer can confirm the current angle of the servo motor in real time.

Servo motors have been developed for decades. The pursuit of their performance is mainly reflected in accuracy and ruthlessness, that is, precision and strength. In addition, they require high stability and long-term work without errors, and vibration is small, but the speed is A second indicator.

The servo motor achieves precise control at low speeds, so the robotic arm can appear.

In addition, the so-called steering gear used in the model aircraft is actually a low-end servo motor, and it is also the most common servo motor system.

Larger servo motors are widely used in modern fully automatic factories and are also regarded as the core components of future humanoid robots.

However, the development of humanoid robots tends to stagnate. This is because so far, the servo motors that can be placed at the joints of humanoid robots have lost to humans of the same weight level in terms of power.

Liang Shicheng has seen a anthropomorphic humanoid robot, but unfortunately he can only climb, not walk.

Robots that can walk on the market are basically exaggerated in their joints, and because of the use of a super-torque version of the servo motor, the improvement of a certain attribute needs to weaken other attributes, so it appears stalemate in action.

Even if the humanoid robot supports its own focus, it is a painful thing.

Therefore, the imagination of robots with infinite power may be a wrong concept. The key is that a large animal like this humanoid robot can win the battle in power.

Even more pessimistic is that, in fact, foreign manufacturers have worked hard on the research and development of servo motors, which means that the servo motors available on the market are already very mature.

And performance has been difficult to grow, reaching the physical limit.

Perhaps the road of humanoid robots, the current only path servo motor road may not work.

Although humanoid robots have not made breakthroughs in decades, in this field of factories, robotic arms are in full swing.

If you want a servo motor with very good properties, high strength and high accuracy, you must use a larger and heavier servo motor, but there is no problem with a mechanical arm fixed on a stand alone in a factory.

Just judging from the current situation, it is difficult for a servo motor to drive its own weight.

Of course, even if the enlarged version of the giant robot is made, it will basically fall down at the first touch, and can't stand up.

In spite of this, the servo motor is still the best core part of the manipulator arm currently available to humans. Although it can be produced in China, the large-scale ultra-high precision and high stability used for assembling cars rely on imports .

Not only that, but the matching gear and bearing parts still need to be imported. The more joints of the robot arm, the greater the error accumulation, and the higher the accuracy requirements for each part.

In the servo motors and high-precision parts, the country spends huge amounts of foreign exchange to the leading island countries every year.

It is difficult to make a breakthrough if basic parts are made by themselves. If a part has been sold in the market for decades, then the company that produced them over the past few decades has almost optimized them to the extreme.

Servo motors and high-precision machining are both very difficult, so Liang Shicheng has another bold idea.

Start from the beginning, abandon precision, develop a large torque motor, or even give up a certain degree of stability, and use multiple groups to work together at the same time.

Then add various sensors to the end of the robotic arm. Although the overall accuracy is very poor, I know where I am wrong and make constant corrections to ensure that the arm is accurate.

Even the entire robotic arm system does not require high-precision parts to cooperate.

So when the entire Lingdong company's senior executives were anxious like ants on a hot pot, Liang Shicheng leisurely set up a small technology company, in order to conceal people's eyes, and claimed to be a mechanical prosthesis development company.

The main business is the development of mechanical prostheses, mechanical exoskeleton systems, and humanoid robots.

Of course, these are for the needs of recruiting personnel, giving the company a cooler title.

Because at the beginning of the design, a lot of indicators were loaned and accuracy was abandoned, so the research time was shortened and the product cost was reduced.

And there was an accidental discovery, that is, the new robotic arm system can make it smaller and lighter while ensuring the strength.

In this way, the goals listed in the company profile seem to be accomplished incidentally.

After developing a large-scale robotic arm prototype used in an automobile factory, Liang Shicheng still did not give up his support and investment in this company, and instead let them continue to specialize in miniaturization.

Everything seemed to go well, but in the end a problem ran into.

The idea of ​​giving up the accuracy of the hardware itself and using the sensor to correct is good in itself, but it is very troublesome to control.

The computer in the factory can only execute the Gcode path program set by the software in advance, and cannot be adjusted in real time according to the actual situation, which means that this set of robotic arms cannot be controlled by a general computer.