Papers
4
Total Citations
25
H-Index
3
About
J. Chalfoun is a robotics researcher whose work centers on the design, modeling, and precision calibration of advanced robotic manipulators for hazardous nuclear environments. Operating within the Interactive Robotics Unit of CEA LIST, Chalfoun has made significant contributions to the development of the P.A.C. (Polyarticulated Carrier), a highly sophisticated long-reach robotic system engineered for light intervention tasks inside blind hot cells and spent fuel management facilities. This 11-degree-of-freedom manipulator, extending over six meters while weighing under 30 kg, represents a landmark achievement in nuclear robotics, demanding extraordinary engineering ingenuity to meet strict specifications of small diameter, high dexterity, and extended reach. Chalfoun's most impactful contribution, cited 15 times, introduced flexible modeling frameworks for such articulated carriers, while subsequent work refined geometric and elastic error calibration techniques, including generalized error matrices and nonlinear calibration using ordinary polynomials. Collectively, these papers establish a rigorous methodology for improving positional accuracy in flexible, long-reach robotic systems operating under demanding real-world constraints. Though working within a specialized niche, Chalfoun's research addresses critical challenges at the intersection of robotics precision engineering and nuclear safety, offering tools and frameworks broadly applicable to teleoperated systems in extreme environments.
Research Focus
Key Achievements
Top Papers
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