Researchers at the Munich Institute for Robotics and Machine Intelligence (MIRMI), affiliated with the Technical University of Munich (TUM), have developed a model that allows a robot to serve tea and coffee more quickly and safely than humans. The math behind the pendulum used in the concept is more than 300 years old.
Can a robot be a better waiter than a human?
Dr. Senior scientist on Sami Haddadin's team, Dr. To answer this question, Luis Figueredo built a robot arm from custom robot manufacturer Franka Emika and connected a computer. The robot's hand grasps a glass filled to the brim with water, raises it, and shakes it back and forth without spilling a drop.
According to the researcher from TUM's Institute for Robotics and Machine Intelligence (MIRMI) in Munich, “And it does it faster and more safely than a human.”
It is carried out by following the movement of the Moroccan tea tray.
How Does the System Work?
The team simply fed the robot various mathematical formulas that have been used for centuries. They used a Moroccan tea tray using the spherical pendulum theory as the basis for their mathematical calculations.
Graduate student Rafael I. Cabral Muchacho and PhD candidate Riddhiman Laha helped Figueredo integrate spherical pendulum dynamics into the robot's control software. Thus, the movements of the robot were constrained by the fundamentals of geometry. Figueredo, along with his colleagues, also added accelerations, velocities and angles to the model.
“When you know how a pendulum moves and how it works, it suddenly becomes pretty simple,” Figueredo says.
Leapless motion is a complex field of study. “Most of the methods are generally focused on restraining the acceleration to keep fluid fluidity in check. Or they used fluid dynamics to predict trajectories by calculating how these compounds would react,” Figueredo says, “which takes at least a few minutes, if not hours, and the result is still unpredictable.”
Applications in Health and Hazardous Liquid Transportation
Scientists' first practical use includes creative robotic assistance for the elderly and those in need of care.
However, Figueredo states that other businesses dealing with the transportation of materials with biological and chemical risks may also be interested in such a solution.
Safety is still of paramount importance; ideally, a robot needs to be able to detect potentially dangerous situations. Figueredo explains: “We need a developed perception for this.
The system can then detect people and predict their movements thanks to sensors. The only way to absolutely eliminate collisions with the robot is to do so. As a safety measure, the robot now uses touch sensors. The robot arm immediately retracts in its current slosh-free mode when it detects a collision, but it also retains fluid.
Günceleme: 24/01/2023 20:55