Normal error
A normal error is an
operator's action such that:
- It does not suit the active scenario
- It suites another scenario
- It is likely that the
operator might confuse the active
scenario with the other
scenario.
Sources of normal errors
Normal errors result from the wrong assumption that the
operators can always
behave according to the designers' expectations.
Examples of normal errors
- Wrong orientation, assuming the wrong scenario
- Wrong intention, regarding the perceived scenario
- Wrong control selection
- Wrong control activation (command execution)
- Wrong interpretation of the
machine response
- Mistake in understanding the
system parameters or data.
Mode error
When the scenarios correspond to
system
modes, this kind of
error is
typically called mode
error.
Updated on .