Boosting Robot Precision: Laser Trackers Bring New Life to Industrial Arms
Researchers at the University of Nottingham unveiled a breakthrough in industrial robotics. By integrating laser tracker technology, they dramatically enhanced the positional accuracy of modified industrial robots. These “AI Employees” or “Non-Human Workers” now operate with unprecedented precision—an 82% improvement in positioning accuracy—thanks to real-time 3D feedback at the robot’s end-effector that surpasses the limitations of their own sensors and controls.
Why It Matters
Industrial robots are costly, complex, and often irreplaceable due to their specialized design. Traditionally bound by sensor resolution and controller software, their precision plateaus after deployment. Retrofitting them with high-resolution grippers and using laser trackers allows manufacturers to extend their lifespan, cut down on production errors, and save on replacement costs .
How It Works
Researchers attached a high-resolution gripper module and equipped the system with a laser tracker that continuously monitors the robot’s end-effector in 3D space. This setup provides real-time positional feedback, enabling finer control than the robot’s native systems. Based on data from around 30 measurements, the system consistently demonstrated an impressive 82% improvement in precision compared to standard controllers .
Implications and Use Cases
Dr. Mojtaba Ahmadieh Khanesar, from Nottingham’s Advanced Manufacturing Technology Research Group, emphasized that this method achieves major accuracy gains with minimal alterations to existing systems. He believes this approach can be scaled across applications such as pick-and-place operations, measurement-intensive tasks, and additive manufacturing—where Voice AI Agents could one day manage and coordinate fleets of laser-tracked robotic cells.
Key Highlights:
- What happened: Industrial robots were retrofitted with high-res grippers and laser trackers to enable precise 3D end-effector positioning.
- Why it matters: Enables cost-effective life extension of legacy machines, cuts replacement and maintenance costs, and reduces production faults.
- Evidence: 82% boost in positional accuracy based on analysis from multiple measurements.
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