Hollow cup motor: the source of power for humanoid robots.
Hollow cup motor, as a type of DC permanent magnet servo control motor, is gradually becoming the "pearl in the palm of the hand" in the field of humanoid robots. Its unique coreless stator/rotor structure fundamentally solves the inherent problems of traditional motor core structures. Compared to traditional iron core motors, hollow cup motors have many advantages with their innovative structure, such as high motor speed, high energy conversion efficiency, high acceleration, high dynamic response, small size, and light weight.
Two types of hollow cup motors: brushed coreless and brushless cogless
Hollow cup motors can be divided into two types: brushed coreless and brushless cogless. The rotor of a brushed hollow cup motor has no iron core, and the stator of a brushless hollow cup motor has no iron core. These two types of motors have different performance characteristics and applicability in the final product. The brushed hollow cup motor rotor has no iron core and features high speed, high acceleration, and high dynamic response, making it suitable for applications that require high speed, high precision, and lightweight. The stator of the brushless toothless hollow cup motor has no iron core and is characterized by high power density, high energy conversion efficiency, and high stability. It is suitable for situations with high torque, high load, and stability requirements.
Core technology of hollow cup motor: self-supporting winding technology
The core technical barrier of hollow cup motors lies in the self-supporting winding technology of the stator/rotor. The key to achieving self-supporting windings lies in the design of winding processes and winding equipment. There are various types of windings for hollow cup motors, such as linear, skewed, concentric, etc. Different types of winding processes are suitable for different motor performance requirements. Overseas manufacturers such as Faulhaber from Germany and Maxon from Switzerland have advantages in winding technology and technological accumulation, resulting in excellent performance of their hollow cup motor products and forming a certain monopoly position.
The development of the humanoid robot industry supports the broad application prospects of hollow cup motors
With the large-scale development of the global humanoid robot industry, the application prospects of hollow cup motors are becoming increasingly broad. The requirements for performance parameters such as size and torque of hollow cup motors for humanoid robot hands are not yet clear, but domestic manufacturers in China have made rapid progress in technology research and product optimization, and are expected to occupy a place in the hollow cup motor market driven by humanoid robots.
Layout of the industry chain related to hollow cup motors for humanoid robots
New entrants can enter the market of hollow cup motors for humanoid robots through two paths: one is to extend from other fields such as medical devices, aerospace, etc; The second is to expand the product horizontally, such as electric vehicles, industrial automation, etc. Hollow cup motor companies that directly supply humanoid robot manufacturers can obtain first-hand application feedback and adjust technology research and product optimization paths in a timely manner. In addition, the performance and quality requirements for hollow cup motors in the medical field are similar to those in the field of humanoid robots, and manufacturers entering the medical field are expected to meet the application needs of humanoid robots with their products.
summary
As the core power component of humanoid robots, the hollow cup motor is gradually opening up a vast market space with its unique structure and excellent performance. Chinese manufacturers are constantly making breakthroughs in technology research and product optimization, and are expected to gain an advantage in the competition of the humanoid robot market. With the continuous improvement of the industrial chain and the gradual clarification of market demand, hollow cup motors will become an important growth point for the humanoid robot industry.
