DRIVEN BY DATA. DEFINED BY ACCURACY. BUILD FOR THE REAL WORLD.
- antonzaitsev4
- Jul 31
- 3 min read
At Baubot, we are pioneering the field of mobile construction robotics with a clear vision: to deliver systems you can trust on your projects. We understand the critical importance of accuracy in construction, which is why our Mobile Robotic System (MRS15) is built around three core performance pillars: reliability, efficiency, and accuracy.
Our system stands out as the world's most accurate construction machine that operates without relying on premarks, delivering unparalleled precision in drilling tasks. In this newsletter, we offer a glimpse into how the MRS15 achieves these high levels of accuracy, the rigorous testing processes that validate its performance, and how it can bring greater precision and reliability to your future projects.
The Challenge
In construction, the only thing that truly counts is the end result – the drilled hole. Inaccurate holes can lead to installation issues, costly rework, and delays that affect your entire project timeline. That’s why we focus on proving what matters most to you: the absolute and local accuracy of the holes.
Delivering this level of precision is not simple. Our system combines advanced hardware and software, all working together to ensure fast, reliable, and highly accurate drilling.
Two main factors have the greatest impact on hole accuracy:
Positioning: Precise localisation using an external total station ensures the robot knows exactly where to drill. Even small errors here can affect the final result.
Mechanical Reliability: Our system uses KUKA industrial robot arms, which are capable of sub-millimeter pose repeatability* (+/- 0.05 mm). These arms are typically installed on solid, immobile bases, such as reinforced concrete floors. In our mobile application, however, the challenge is significantly greater: the entire robotic platform is subject to structural flexibility and minor deformations.
For this evaluation, we focus purely on these two main factors. Given the complexity of the system, it is essential to approach the accuracy challenge step by step rather than trying to address all influencing factors at once. By assessing them in isolation, we ensure the system delivers the accuracy your projects require.
*The ability of a robotic arm to return to the exact same position and orientation repeatedly under identical conditions.
The Accuracy Test
Our goal is simple: Ensure every hole is drilled exactly where it’s needed with maximum precision and reliability.
To measure this, we test the MRS15 under realistic construction conditions by commanding it to move in the room to various positions – floor, wall, and ceiling – and measure each position’s deviation from its target point using a total station.
The test follows a systematic sequence to ensure repeatability and consistency:
Total Station Setup: Find the position of the total station in the reference frame to guarantee spatial measurement accuracy.
Positioning Routine: Perform the positioning routine to determine the robot's origin and orientation.
Target Attachment: Mount the mock tool* with the SMR** at the robot’s end-effector.
Measurement: Run a predefined program that moves the robotic arm to set coordinates while recording the actual target positions using the total station. The program takes approximately 30 minutes and delivers consistent, reproducible results.
Evaluation: For every position, compare the commanded vs. measured coordinates to assess the robot’s local accuracy.
This comprehensive testing process confirms that Baubot delivers the precision required for your construction tasks.
* Mock tool: A device that replicates the weight and length of a drilling tool, while allowing the mounting of a measurement device for performing testing.
** SMR (Spherical Mounted Retroreflector): A precision measurement tool used to track the robot’s reached positions accurately.
The Results
The figure below illustrates the spatial distribution of measurement errors recorded during the accuracy test. Key statistical indicators — mean, median, and 3-sigma bounds — are included in the plots to provide insight into both the central tendency and variability of the data.
Our testing confirms that the MRS15 delivers exceptional drilling accuracy. Across all tested positions, the system demonstrates a mean drilling error of just 3.72 mm, with no single hole exceeding the tolerance threshold of 10 mm.
What does this mean for you? These results bring confidence and peace of mind. The MRS15’s proven accuracy ensures compliant installations, minimizes costly rework, and keeps your projects efficient and on schedule.
We regularly test and validate our systems to guarantee consistent top-level performance for every project. Each deployment allows us to tailor configurations to your unique site, achieving the highest possible precision every time — even in the dynamic and demanding environments of construction.
Reach out to us
Want to see how Baubot can bring this precision to your projects? Reach out to our sales team today to discuss your next construction challenge and see the MRS15 in action.
