Industrial robotics teaching methods: Programming a robot by physically guiding the end effector along the desired trajectory so it records and repeats the path is known as which control method?

Introduction / Context:
Robots can be programmed by various methods. One practical technique involves physically moving the robot arm through the intended path while the controller samples and stores positions. This method is associated with applications requiring smooth trajectories such as painting or welding.

Given Data / Assumptions:

• Operator physically moves the robot along the desired path.
• Controller records many intermediate points or a continuous stream.
• Robot later replays the trajectory automatically.

Concept / Approach:
This approach corresponds to continuous-path control (often taught via lead-through or teach pendant). The system interpolates between closely spaced recorded points to create smooth motion, unlike discrete point-to-point programming used in pick-and-place tasks.

Step-by-Step Solution:

Verification / Alternative check:
Documentation for industrial robots distinguishes CP (trajectory defined by many points) from PTP (move between a few taught points). The described physical training aligns with CP.

Why Other Options Are Wrong:

• Contact sensing and robot vision are sensing modalities, not trajectory teaching methods.
• Pick-and-place refers to PTP moves between discrete locations.

Common Pitfalls:
Confusing lead-through teaching (a way to capture paths) with PTP programming; CP emphasizes continuous trajectories, not just endpoints.

Final Answer:
Continuous-path control