Example Concept: The selection of actuators for a robotic leg is primarily driven by the need to balance torque and speed to achieve natural and efficient movement. Electric actuators are often preferred for their precision and ease of control, while hydraulic actuators might be chosen for high-force applications. Additionally, the actuator's weight and power efficiency are crucial, as they directly impact the robot's energy consumption and overall mobility. Environmental factors, such as exposure to dust or moisture, also play a role in determining the appropriate actuator type.