Gabriele Merenda
An alternative approach for the acquisition of 6axis force and torque sensor for a Martian robotic arm.
Rel. Marcello Chiaberge. Politecnico di Torino, Corso di laurea magistrale in Mechatronic Engineering (Ingegneria Meccatronica), 2025
Abstract
This thesis presents an alternative method of data retrieval from a six-axis Force-Torque Sensor (FTS) on a robot arm for Mars surface missions. The context of the research is the Mars Sample Return mission, which involves launching a new rover equipped with an articulated, extended robot arm to collect and carry geological samples initially collected by the Perseverance rover. Accurate force and torque sensing at each of the joints of this robotic arm are critical to perform manipulation accurately, achieve system stability, and ensure collision-free interaction with the Martian environment. The current design incorporates centralized electronics and +5V DC excitation, and therefore analog sensor signals must traverse long distances along flexible PCBs shared among other signal and power lines.
This configuration is prone to signal deterioration through electromagnetic interference and cross-talk, especially in the highly populated and electromagnetically noisy environments prevalent in robotic systems
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