When stick-slip hinders human positioning performance

This study investigated the effect of the difference between static and Coulomb friction on human performance in a positioning task. A custom designed 1-dof haptic interface was used, for which the amount of static and Coulomb friction was varied. It was found that an increasing difference between static and Coulomb friction negatively affected performance. The amount of impact on the positioning performance depended on the positional resolution required; i.e. the negative effect was stronger for smaller targets. Lastly, thresholds for the difference between static and Coulomb friction are presented that can be used as guidelines for input devices that are similar to the one used in this experimen

When stick-slip hinders human positioning performance

This study investigated the effect of the difference between static and Coulomb friction on human performance in a positioning task. A custom designed 1-dof haptic interface was used, for which the amount of static and Coulomb friction was varied. It was found that an increasing difference between static and Coulomb friction negatively affected performance. The amount of impact on the positioning performance depended on the positional resolution required; i.e. the negative effect was stronger for smaller targets. Lastly, thresholds for the difference between static and Coulomb friction are presented that can be used as guidelines for input devices that are similar to the one used in this experimen