Fabric-reinforced textile actuators
A soft robot hand includes a palm, a first fabric-reinforced textile actuator coupled to the palm, and a second fabric-reinforced textile actuator coupled to the palm. The first actuator is moveable relative to the palm between a collapsed position and an inflated position to approximate a joint in a first human finger. The second actuator is spaced apart from the first actuator. The second actuator is moveable relative to the palm between a collapsed position and an inflated position to approximate a joint in a second human finger.
1. A soft robot hand comprising:
a palm;
a first fabric-reinforced textile actuator having an axis extending along a length of the first fabric-reinforced textile actuator, wherein the first fabric-reinforced textile actuator is coupled to the palm and moveable relative to the palm between a collapsed position and an inflated position to approximate a first joint in a first human finger, wherein the first fabric-reinforced textile actuator has a plurality of fabric reinforcements that each extend at an oblique angle relative to the axis; and
a second fabric-reinforced textile actuator coupled to the palm and spaced apart from the first fabric-reinforced textile actuator, the second fabric-reinforced textile actuator moveable relative to the palm between a collapsed position and an inflated position to approximate a second joint in a second human finger.
2. The soft robot hand of claim 1 , wherein the first fabric-reinforced textile actuator comprises a thermoplastic polyurethane material and a high-stretch knitted textile.
3. The soft robot hand of claim 2 , wherein the plurality of fabric reinforcements are thermoplastic polyurethane-coated nylon fabric reinforcements that are bonded to the high-stretch knitted textile.
4. The soft robot hand of claim 2 , wherein the first fabric-reinforced textile actuator has a thermoplastic polyurethane actuator sealed to a side of the high-stretch knitted textile.
5. The soft robot hand of claim 1 , wherein in the collapsed position, the first fabric-reinforced textile actuator is deflated and has an internal pressure of less than zero.
6. The soft robot hand of claim 1 , further comprising a pneumatic fitting configured to supply air to at least one of the first fabric-reinforced textile actuator and the second fabric-reinforced textile actuator.
7. The soft robot hand of claim 1 , wherein the first fabric-reinforced textile actuator is capped with a fabric pocket having a grip material.
8. The soft robot hand of claim 1 , wherein the first fabric-reinforced textile actuator exhibits at least one of a bending motion, a twisting motion, and an extending motion while transitioning between the collapsed position and the inflated position.
9. A soft robot hand comprising:
a compliant palm;
a first textile pneumatic actuator coupled to the compliant palm, the first textile pneumatic actuator including a first segment configured to exhibit a first motion relative to the compliant palm, and a second segment configured to exhibit a second motion relative to the compliant palm, the first motion being different than the second motion; and
a second textile pneumatic actuator coupled to the compliant palm and spaced apart from the first textile pneumatic actuator, the second textile pneumatic actuator including a third segment configured to exhibit the first motion relative to the compliant palm, and a fourth segment configured to exhibit the second motion relative to the compliant palm;
wherein the second textile pneumatic actuator has a fifth segment configured to exhibit a third motion relative to the compliant palm, the third motion being different than the first motion and the second motion, wherein the first motion is bending, the second motion is extending, and the third motion is twisting.
10. The soft robot hand of claim 9 , wherein the third segment is configured to rotate about an axis orthogonal to the second textile pneumatic actuator.
11. The soft robot hand of claim 9 , wherein the fourth segment is configured to move along an axis that extends along a length of the second textile pneumatic actuator.
12. The soft robot hand of claim 9 , wherein the fifth segment is configured to rotate about an axis along a length of the second textile pneumatic actuator.
13. A soft robot hand comprising:
a stretchable fingerless glove;
a plurality of first fabric-reinforced textile actuators coupled to the fingerless glove, wherein each of the first fabric-reinforced textile actuators is moveable between a collapsed position and an inflated position, wherein the plurality of first fabric-reinforced textile actuators defines a first range of motion; and
a second fabric-reinforced textile actuator coupled to the fingerless glove, wherein the second fabric-reinforced textile actuator is moveable between a collapsed position and an inflated position, wherein the second fabric-reinforced textile actuator defines a second range of motion different than the first range of motion;
wherein the second fabric-reinforced textile actuator includes bending segments, twisting segments, and extending segments.
14. The soft robot hand of claim 13 , wherein the first range of motion is configured to mimic a range of motion of an index finger.
15. The soft robot hand of claim 13 , wherein the plurality of first fabric-reinforced textile actuators include bending segments and extending segments.
16. The soft robot hand of claim 13 , wherein the second range of motion is configured to mimic a range of motion of a thumb.
17. The soft robot hand of claim 13 , wherein in the collapsed position at least one of the plurality of first fabric-reinforced textile actuators and the second fabric-reinforced textile actuator is configured to collapse between 5% and 25% of a length of the inflated position.