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What are the Benefits of Multi-axis Sensors in Industrial Automation?

A 6-axis force torque sensor mounted to the robot wrist is an easy and affordable way to realize force control with a short implementation time. Especially sensors with integrated electronics are simple to install and can be directly connected to the robot's communication bus or controller. Using a sensor that is robust, compact, and stiff allows for various applications and makes it possible to keep it attached to the robot even while not directly in use.

The usage of a complete 6-axis sensor creates flexibility. Not all axes may be needed at the same time for a specific application. For example, when a robot is polishing a surface, the force perpendicular to the tool and its alignment to the surface is regulated by force control. In the other directions, the robot follows a programmed or recorded position trajectory. Therefore in many applications, a hybrid force/position control is used. Nevertheless, the process forces can be monitored in all directions to avoid manufacturing errors and create a consistent surface finishing quality.

Not every robot can become a cobot that is collaborating with humans, but they can become more adaptive to a changing and complicated environment, and reactive to disturbances and uncertainties by force sensing. It enables the detection of contacts along the tool path and offers an intuitive way to teach-in new and adapt pre-programmed waypoints.