Acrobots

The lessons learned from Acrobots go far beyond the lab. By studying how these machines manage underactuated systems, engineers can improve:

Underactuated systems are often more energy-efficient because they utilize natural physics (like gravity and inertia) rather than fighting against them with heavy motors. Acrobots

Unlike a standard robotic arm where every joint has its own motor, the Acrobot has only one powered joint. It consists of two links and two joints: The lessons learned from Acrobots go far beyond the lab

Modern robots like Boston Dynamics' Atlas use similar principles of momentum and balance to perform flips and navigate rough terrain. It consists of two links and two joints:

Advanced prosthetic limbs must often react to the body's natural momentum without having a motor at every possible point of movement.

Once at the peak, the Acrobot must perform a "handstand" on its passive joint. This requires constant, minute adjustments at the elbow to maintain a precarious equilibrium. Why Do We Build Them?