CRS CRS Human-Robot Collaboration & Ergonomics 2 — Questions and Answers
Question 1: What is 'hand guiding' mode in collaborative robotics?
- Programming via a teach pendant menu
- Directly guiding the robot arm by hand to teach positions or paths (Correct answer)
- Automated guided vehicle path control
- Remote wireless control of the robot
Correct answer: Directly guiding the robot arm by hand to teach positions or paths
Hand guiding allows operators to physically move the robot arm by hand to intuitively teach new positions or paths, typically using a handle with an enabling device near the end effector.
Question 2: What is the purpose of a 'safety-rated monitored stop' in collaborative robotics?
- Triggering an emergency stop only when damage occurs
- Halting robot motion when a human enters the workspace and automatically resuming when they safely exit (Correct answer)
- Limiting the robot to its minimum operating speed
- Locking out the robot for maintenance access
Correct answer: Halting robot motion when a human enters the workspace and automatically resuming when they safely exit
A safety-rated monitored stop halts robot motion when a human enters the collaborative workspace and automatically resumes operation when the human safely exits, without requiring manual restart.
Question 3: What ergonomic principle should guide the working height of a collaborative robot workstation for standing operators?
- The robot's maximum reach height
- Approximately the elbow height of a standing worker to minimize reaching and back strain (Correct answer)
- Standard ceiling height divided by two
- A universal standard height of 90 cm
Correct answer: Approximately the elbow height of a standing worker to minimize reaching and back strain
Workstations should be designed at approximately the operator's elbow height to minimize overhead reaching and bending, reducing back and shoulder strain during collaborative tasks.
Question 4: How does end-of-arm tooling (EOAT) design impact human-robot collaboration safety?
- EOAT design has no impact on collaboration safety
- Rounded, padded, or compliant EOAT reduces injury severity during accidental contact (Correct answer)
- Sharp tooling is preferred for greater precision near workers
- Heavier tooling is inherently safer due to inertia
Correct answer: Rounded, padded, or compliant EOAT reduces injury severity during accidental contact
EOAT designed with rounded edges, soft materials, or compliant features significantly reduces the severity of injury in case of accidental contact between the tool and a worker.
Question 5: What is the role of vision systems in a human-robot collaborative cell?
- Recording video footage for security purposes only
- Detecting and tracking human presence to enable dynamic safety responses (Correct answer)
- Inspecting product quality as a standalone function
- Automatically programming the robot's motion paths
Correct answer: Detecting and tracking human presence to enable dynamic safety responses
Vision systems detect and track human presence in the robot's workspace, enabling dynamic adjustments to robot speed and path planning to maintain safe separation distances.
Question 6: What does 'task allocation' mean in a human-robot collaborative workflow?
- Assigning worker shift schedules
- Determining which tasks are performed by the robot versus the human based on each party's strengths (Correct answer)
- Distributing computing load across controllers
- Allocating floor space for the robot cell
Correct answer: Determining which tasks are performed by the robot versus the human based on each party's strengths
Task allocation divides work between humans and robots based on their complementary strengths, with robots handling repetitive or physically demanding tasks and humans handling judgment-intensive work.
CRS CRS Human-Robot Collaboration & Ergonomics 2
What is 'hand guiding' mode in collaborative robotics?