- High-efficiency control
- Superior dynamic performance
- Safety redundancy
- Environmental resilience
- Performance Highlights
The large hollow bore rotary actuator typically integrates an internal rotor frameless torque motor with components such as a harmonic drive reducer, absolute encoder, and customized large hollow bore harmonic drive unit to form a complete rotary actuator assembly. Its control unit (drive system) is usually externally mounted, enabling high-precision motion control for connected equipment. Compared to standard rotary actuators, this series features a larger hollow bore diameter, allowing passage of lead screws, cables, and other components. It is designed for applications requiring large through-bore space, high precision, and compact integration, such as machine tool rotary tables, precision medical devices, 5-axis laser cutting systems, and semiconductor equipment.
● Structural Characteristics
Modular design integrating high-precision encoders and intelligent power modules (IPM), offering compact size and strong EMI resistance.
Supports multiple control modes (position/speed/torque) and is compatible with both AC permanent magnet synchronous motors and DC servo motors.
● Control Algorithm
Vector-based triple-loop control (current/speed/position) optimizes dynamic response accuracy and stability.
Implements complex control logic via digital signal processors (DSPs), supporting networked communication and remote debugging.
● Performance Highlights
Micron-level positioning: High-resolution encoder feedback eliminates cumulative errors, achieving sub-micron repeatability.
Rapid response: Low electromechanical time constant enables millisecond-level start/stop or direction reversal, ideal for high-frequency motion.
Wide speed range: Supports low-speed high-torque and high-speed light-load operation, with a speed ratio exceeding 1:5000.
● Adaptability
Compatible with standard interfaces (e.g., EtherCAT, CANopen) for seamless PLC/system integration.
Built-in soft-start circuits and overvoltage/overcurrent protection reduce startup surges and failure risks.
