Table 2 Add symbols and definitions
From: A maintenance time prediction method considering ergonomics through virtual reality simulation
Definition | Sign | Details | Samples |
|---|---|---|---|
Delayed | BD | one hand have movements, another hand is in the stopped state, don’t consume time | Right hand M Left hand BD |
Maintain | H | Fixed state with hand holding or grasping objects, mainly refers to the action of support and fixed, don’t give time | Left hand H Right hand P2 |
Effective time | UT | Except movement of serviceman, inherent additional time caused by machines or other technical requirements instead of action produced, need to measure time accurately. Such as mechanical working time, soldering, riveting, testing, coating, etc. | Tin soldering time UT or Instrument testing time |