Table 7 Description of different metrics used by different devices
From: Soft robotic devices for hand rehabilitation and assistance: a narrative review
Measurement | Description |
|---|---|
Extension torque | The torque applied by the device on finger extension |
Grasping ability | Tested whether subject was able to grab various objects with assistance from the device |
Grip force | The force exerted by the device attempting a grasping motion with subject completely passive |
Max input force | Either the max input force supported by the device or the max input force required to achieve the desired functionality (pneumatic and hydraulic systems only) |
Motion trajectory | Tracks the trajectory of the device/digits upon actuation |
Opposition grasp force | The actuated force achieved while opposing the thumb |
Pinch force | The force exerted by the device attempting a pinching motion with subject completely passive |
ROM | Measurement of the rotations about the joints in the hands |
Speed of movement | Speed of movement of the fingertip upon actuation |
Tensile force | The max tension required to achieve desired function (cable systems only). It is the equivalent to max input force of pneumatic systems. |