Hub-mounted servo motors, as advanced drive units that integrate motors, encoders, wheels, and tires into a single compact assembly, are increasingly becoming the core power source in fields such as intelligent robotics, automated guided vehicles (AGVs), and autonomous mobile robots (AMRs).

　　I. Structural Principle of Hub Servo Motors

　　The in-wheel servo motor ingeniously integrates the servo motor into the wheel hub, making it the core component of the wheel. The motor itself consists primarily of a stator and a rotor: the stator is fixed to the inner wall of the hub, while the rotor is mounted on the rotatable portion of the hub. When an electric current passes through the stator windings, a rotating magnetic field is generated between the stator and the rotor, which in turn drives the rotor to rotate, enabling the wheel to move forward or backward efficiently.

　　The encoder, serving as the precision sensor in the hub servo motor system, is mounted on the motor shaft to acquire position and speed information and transmit this critical data to the drive. The drive, acting as the control center, processes and executes external commands by precisely regulating the motor’s supply current or voltage, thereby ensuring that the motor operates at the desired speed and torque.

　　II. Operating Characteristics of Hub Servo Motors

　　Hub-mounted servo motors offer precise speed and position control, thanks to their built-in encoders and high-performance drives. Through a closed-loop feedback control system, the encoder continuously provides the control unit with real-time information on the drive shaft’s current position, enabling accurate control of rotational angle, speed, and torque. In addition, hub-mounted servo motors boast a compact design, easy installation, low-noise operation, long service life, and virtually maintenance-free operation.

　　III. Application Advantages of Hub Servo Motors

　　Efficient Integration: The hub-mounted servo motor integrates the motor, encoder, wheels, and other components into a single unit, significantly enhancing the equipment’s compactness and overall performance.

　　Precise Control: Thanks to a sophisticated feedback system, hub-mounted servo motors can achieve precise control of speed, position, and acceleration, meeting the demands of applications requiring high control accuracy.

　　Wide-ranging application scenarios: Hub-mounted servo motors are extensively used in service robots, commercial AGVs, industrial AGVs, AMRs, and other fields, providing these devices with flexible mobility.

　　IV. Future Development Trends

　　With the continuous advancement of intelligent and automated technologies, hub-mounted servo motors will find applications in an ever-wider range of fields. At the same time, to meet the diverse requirements of different application scenarios, these motors will undergo ongoing optimization of their structural design and performance parameters, with a focus on enhancing load-carrying capacity, reducing energy consumption, and improving environmental adaptability.