Friday 31 January 2025
A team of researchers has made a significant breakthrough in developing a musculoskeletal humanoid robot that can perform dynamic motions, such as hitting a badminton shuttlecock, with greater precision and control. The robot, named Kengoro, is designed to mimic human-like movements and is equipped with advanced sensors and actuators that allow it to adapt to different situations.
One of the key challenges in developing a humanoid robot like Kengoro is ensuring that its muscles work together harmoniously to achieve the desired motion. In traditional robots, each joint is controlled separately, but humans use their entire musculoskeletal system to move. To overcome this challenge, the researchers developed two novel control methods: antagonist modifier and agonist modifier.
The antagonist modifier suppresses the tension of opposing muscles, allowing Kengoro to move smoothly with low internal force. This is achieved by measuring the tension of antagonist muscles and adjusting the length of their tendons accordingly. In experiments, it was found that this method significantly reduced the internal force generated during motion, making it more efficient and precise.
The agonist modifier, on the other hand, modifies the trajectory of the robot’s hand to ensure accurate targeting. This is achieved by recognizing the robot’s hand position and adjusting its movement in real-time. In experiments, Kengoro was able to hit a badminton shuttlecock with precision using this method.
To evaluate these control methods, the researchers conducted two experiments. In the first experiment, they tested the antagonist modifier by having Kengoro execute dynamic hand movements while measuring the tension of its muscles. The results showed that the antagonist modifier enabled the robot to move smoothly with low internal force.
In the second experiment, they tested both control methods by having Kengoro hit a badminton shuttlecock using the agonist modifier and then applying the antagonist modifier to reduce internal force. The results showed that the combination of these two methods allowed Kengoro to achieve precise targeting while minimizing internal force.
The development of Kengoro is significant because it brings us closer to creating robots that can interact with humans in a more natural and intuitive way. By understanding how our muscles work together to move, researchers can develop more advanced humanoid robots that are capable of performing complex tasks with precision and control.
Cite this article: “Advances in Humanoid Robotics: Developing Kengoros Dynamic Motions”, The Science Archive, 2025.
Humanoid Robot, Kengoro, Musculoskeletal System, Antagonist Modifier, Agonist Modifier, Internal Force, Precision Control, Dynamic Motion, Badminton Shuttlecock, Robotics, Artificial Intelligence.
