COMPARING THE EFFECTS OF TWO CONTROLLER ALGORITHMS ON DC TORQUE TOOL OPERATORS

摘要

Prior studies of effects of DC torque tool use on human operators have not studied the effect of different controller algorithms. This paper describes results of an experimental laboratory-based study that investigated the effects of DC torque tool controller algorithm on operator and tool kinematics. The effects of joint hardness and tool orientation were also examined. Dependent measures included posture and velocity of the operator's arm and displacement and velocity of the torque tool handle. Significant differences were found in several measures as a function of one or more of the independent variables. Of particular note, the Automatic Tightening Control (ATC) algorithm showed some positive effects (less movement and lower velocities) in comparison to the Downshift algorithm in certain conditions. These results provide some support for a potential biomechanical benefit from ATC.