Magnetostrictive actuators are devices that convert magnetic energy into mechanical motion. They operate based on the principle of magnetostriction, where certain materials change shape when exposed to a magnetic field. This property allows them to produce precise movements, making them useful in various applications, such as robotics and industrial automation. These actuators typically consist of a magnetostrictive material, like Terfenol-D, and a coil that generates a magnetic field. When the coil is energized, the material elongates or contracts, creating linear or rotational motion. Their high precision and reliability make them suitable for tasks requiring accurate positioning and control.