On the road to the rise of Chinese domestic robots, the localization of core components is a very important content. The data shows that due to the lack of serious core components in China's industrial robot companies, they are mainly concentrated in the ontology and integration.
The servo motor is a kind of auxiliary motor indirect transmission device, which can control the speed and accuracy very accurately. The voltage signal can be used as the torque and speed to drive the control object, which is equivalent to the "nervous system" of industrial robots.
In the domestic servo motor market, the top three brands, Panasonic, Mitsubishi, and Yaskawa, are Japanese brands, with a total share of 45%. European brands such as Gate, Bosch, Schneider occupy high-end, the overall market share is about 30%, and the overall share of domestic companies is low. At 10%. Japanese brands monopolize the small and medium-sized OEM (equipment manufacturing) market with good product performance and competitive prices, and foreign companies in the servo system have an absolute advantage.
According to the market share of servo motors, most of them are imitation Japanese servo motor designs, and the power is mostly within 3kw, with medium and small power being more, and 5.5-15kw medium and large power servos are not, resulting in some applications on the equipment, because there is no one large The power of the servomotors and drives was forced to give up the entire system.
As China's policy dividend continued to drive the manufacturing industry to heat up, iphone8 related production equipment upgrades, lithium battery production equipment and solar processing equipment increased, China's general servo market performed well in the quarter. In the second quarter of 2017, the second-quarter results of Panasonic, Mitsubishi, Delta, and Inovance increased by more than 30% year-on-year; the performance of manufacturers such as Yaskawa and Eston increased by more than 20% in the second quarter; the second quarter results of Siemens and other manufacturers increased by more than 10%. %.
In the case of a significant increase in servo demand year-on-year, common servo products from European, American, Japanese, and domestic manufacturers also showed strong industry preferences.
From a cost perspective, core components account for about 72% of the cost of industrial robots. It is understood that China's industrial robot servo system will reach a market scale of 4.7 billion yuan by 2020, and the compound annual growth rate will be about 35% in the next five years.
What are the factors that determine the flexibility of industrial robots? As we all know, the most important factor is the number of axes. The number of robot axes determines its degree of freedom. The higher the degree of freedom is, the closer the robot is to the function of the human hand. The versatility is better, but the more degrees of freedom, the more complex the structure, and the higher the overall requirements for the robot. This is A contradiction in robot design.
At present, efficiency has always been a top priority for servo systems. It mainly includes the high efficiency of the motor itself: for example, the improvement of the function of the permanent magnet material and the very good structure planning of the magnet device; also includes the high efficiency of the drive system: including the optimization of the inverter drive circuit, the optimization of the acceleration and deceleration motion, and the regeneration system. Dynamic and energy reverberations and very good cooling methods.
To make the human-computer collaboration process easier and safer, it is necessary to have the ability to sense, control, and limit the torque, that is, to perceive external minimal torque changes and react to avoid collisions, making the human-machine collaboration process easier and safer. Requires smaller and more elaborate servo motors for support.
At present, China's robotics industry is in an era of great transformation, and it needs rapid innovation and integration. As a high-tech, robotics is an important support method to promote industrial development. Domestic robots have a place in the international arena to create brand influence and quality. As an execution unit in a robot, a servo motor is a major factor that affects the performance of the robot.
Therefore, for domestic manufacturers, it is necessary not only to demonstrate better performance in the overall solution, but also to continue to exert stronger service advantages and enhance customer experience. The most important thing is that the independent research and development of core components such as encoders, speed reducers, and servos should be actively implemented to improve the overall performance of servo systems such as motor dynamic response, overload capacity, and efficiency.
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