The 6-axis force torque sensor is the most comprehensive type of multi-dimensional force sensor, capable of simultaneously measuring three orthogonal force components (Fx, Fy, Fz) and three torque components (Mx, My, Mz). This makes it a critical component for robotic systems requiring sophisticated interaction with their environments.
In humanoid robotics, the sensor is typically mounted on key joints such as wrists, ankles, and dexterous hands. These locations allow the robot to detect and respond to multi-directional forces and torques during complex operations like object manipulation, balance control, and human-robot interaction.
Why 6-Axis Force Sensing Matters
Humanoid robots are designed to interact with tools, environments, and humans. Force feedback is essential for compliant control—the ability to adjust to unexpected contact or varying terrain.
By using Hypersen’s 6-axis force torque sensors, robots gain a tactile-like sensing capability, similar to human perception. This enables them to:
Perform delicate operations
React safely to human touch
Maintain balance in complex environments
Increase task efficiency and precision
Working Principle of the HPS-FT Series
Hypersen’s sensors operate on the strain gauge principle:
Strain Effect: Elastic deformation of the sensor under force alters resistance values in strain gauges.
Signal Amplification: These resistance changes are converted to analog electrical signals and amplified.
Data Acquisition: Signals are digitized and processed through decoupling algorithms to separate directional forces and torques.
Calibration: Multi-axis calibration ensures measurement accuracy in all six degrees of freedom.
Performance Parameters that Define Excellence
Key specifications of Hypersen’s HPS-FT080 and related models include:
High Sensitivity: Captures micro force changes, vital for fine manipulation tasks.
High Precision: Ensures repeatable and accurate readings.
Low Crosstalk: Reduces interference between axes for clean data.
Low Non-linearity: Guarantees linear response to applied loads.
Zero-point Stability: Long-term measurement reliability.
High Resolution: Detects the smallest changes in force/torque.
Dynamic Response: Tracks rapidly changing force events.
Overload Protection: Ensures safe operation beyond rated loads.
Low Temperature Drift: Maintains accuracy across environments.
Conclusion
The integration of Hypersen’s HPS-FT 6-axis force torque sensors empowers humanoid robots with advanced force perception capabilities—crucial for performing complex tasks, interacting safely with humans, and adapting to dynamic environments.
As humanoid robotics continues to evolve across industrial, medical, and service domains, force sensing will remain at the core of autonomy and precision.
