Which type of robots are generally anchored to the ground or a structure and often feature a robotic arm?

Stationary robots are indeed typically anchored to the ground or a structure and are designed to perform specific tasks in a fixed location. These robots often feature a robotic arm, which allows them to manipulate objects, assemble components, or perform repetitive tasks with high precision. Their design is optimized for stability and reliability in a static environment, making them ideal for manufacturing and assembly line applications where they can operate continuously without needing to maneuver through different areas.

Mobile robots, on the other hand, are designed to move around their environment and do not typically have a fixed structure. Collaborative robots, or cobots, are designed to work alongside human operators but may also not be anchored. Drones are a type of aerial robot that operate in three-dimensional space, enabling various applications like surveillance or delivery but are not typically associated with being anchored to a fixed position. Therefore, stationary robots are the category that best matches the characteristics described in the question.