Over the past decade, the quality of domestic servo motors has been upgraded in various aspects, including upstream processing equipment, the R & D capabilities of enterprises in electronic software and hardware, production and assembly operations, and testing capabilities. More and more manufacturers are able to expand from the model aircraft market to meet the servo application requirements in different fields. This shows that the stability and consistency of domestic servo motors are quite good. At least, with our price advantage, we can achieve 80% to 90% of the performance of imported ones. After - sales service, technical guidance, maintenance, and delivery time can be guaranteed to a large extent. So, just for these two points, please give support to domestic servo motors.

When it comes to price, in China, there is indeed price competition in every market, and the competition is extremely fierce. However, products will eventually take the quality - oriented route, and products without technical content and those with low prices will ultimately be eliminated from the market. China's economy has shifted from a stage of high - speed growth to a stage of high - quality development. The micro - foundation of high - quality development is higher - quality products and services, and promoting high - quality development puts forward higher requirements for the quality of Chinese manufacturing.

China still has insufficient basic capabilities and room for improvement in the development environment. The basic capabilities affecting the quality improvement of Chinese manufacturing include the supporting ability of quality infrastructure at the [sensitive word] level, the common industrial basic capabilities at the industrial level, as well as the technological innovation and management innovation capabilities at the enterprise level. The obstacles in the development environment are even more complex. For example, there is a lack of the spirit of craftsmanship, there are deviations in policy orientation, and a well - ordered market competition system has not yet been formed, and so on.

We've digressed a bit. The quality - oriented route is a long - term one. It requires time and comprehensive accumulation. Of course, if a servo motor manufacturer has accumulated for ten years, the product quality can be guaranteed.

Finally, it must be emphasized that price may influence your choice, but quality must not be neglected. Once a product is finalized, quality problems will have a devastating impact on the product and lead to continuous after - sales issues.

Upon in - depth understanding, we can find that for the RS485 serial port series servo motors in terms of software and hardware:

They use a 7075 aluminum alloy shell. 7075 aluminum alloy is a cold - treated forged alloy with high strength, far superior to mild steel. 7075 is one of the commercially strong alloys. It has a compact structure and strong corrosion resistance, and is [sensitive word] for aviation and marine plates.

They use brushless motors as the power drive. Brushless motors adopt electronic commutation, with the coils stationary and the magnetic poles rotating. Compared with brushed motors, they have no brushes, a long lifespan, and low maintenance costs; they produce low noise and run smoothly; and they also greatly reduce the interference of electric sparks on remote - control radio equipment.

They use a steel gearbox and a steel steering wheel. Everyone is familiar with steel. Most traditional servo motors use materials such as aluminum, copper, and iron. The hardness of these materials is definitely not as good as that of steel teeth. However, steel is more difficult to process, and it is more challenging to control coefficients in central processing and molding, so the cost is naturally higher. In addition, a steel steering wheel is used outside the servo motor. The traditional servo motor steering wheel, or swing arm and rudder arm, are mostly made of plastic or aluminum - based metal arms. The disadvantage is that after a period of use, there will be a gap between the gear and the steering wheel. Because aluminum is easy to shape and soft, external forces will make the holes in the steering wheel larger. Steel is hard and difficult to process. Some are processed by laser wire cutting, so the processing cost is also higher. Overall, the disadvantages of using a steel gearbox and a steel steering wheel are high requirements for the technological level and higher processing costs, while the advantages are greater strength, higher output torque, and a longer lifespan.

They use a 12 - bit contactless magnetic encoder. Compared with traditional potentiometers, the control angle range is increased to 360 degrees. The accuracy is much higher (nearly four times), and any angle can be defined as the middle position. This means that during mass production, the installation and adjustment accuracy can be very high. Of course, due to the contactless design, the lifespan is basically unlimited. The advantages are high accuracy, a large angle range, more achievable functions, and a long lifespan, while the disadvantage is that it is more expensive than potentiometers.

Finally, let's talk about the drive board inside the servo motor. In the past, many traditional PWM servo motors were sold to servo motor manufacturers by solution companies because the servo motor manufacturers did not have their own electronic engineering departments. Now it's different. The circuit board is made in - house, and both electronics and software are handled internally, forming their own core advantages. Functions required by servo motors, such as position feedback, current feedback, voltage feedback, temperature feedback, as well as overload protection, current protection, torque - limited output, continuous motor rotation mode, angle limitation, acceleration start - up and stop, etc., can all be achieved.

A good product still validates the saying about [sensitive word] infrastructure, industrial commonality, innovation ability, and the spirit of craftsmanship. It's not that we don't have good products, but that we need the joint creation of this era and the support of the public.