How does 'linear interpolation' function in FANUC programming?

Linear interpolation in FANUC programming is a method that enables the robotic arm to move in a straight line from one position to another in a defined space. This movement is performed by calculating the shortest path between the start and end point, ensuring that the robot follows a direct trajectory rather than taking a serpentine or zigzag route. This is particularly useful in applications where precision and efficiency are critical, such as in machining, assembly, and material handling tasks.

By utilizing linear interpolation, programmers can ensure that the robot executes motions smoothly and accurately, which is essential for achieving desired outcomes in various industrial operations. The straightforward nature of this form of movement contributes to smoother operation and less wear on mechanical components since the robot avoids unnecessary alterations in trajectory.

Other options relate to different aspects of movement and programming. For instance, rotating around a pivot point pertains to angular manipulation rather than direct linear movement. Variable speed adjustments and collaborative interaction controls, while important in robotic operation, do not specifically define the linear interpolation concept itself.