Control device, control method, and program
The present disclosure relates to a control device, a control method, and a program capable of supporting an object with a more appropriate supporting force. The control device includes a supporting force control unit that controls a supporting force for supporting an object on the basis of information regarding a shape of a contact portion in contact with the object and information regarding a shear force of the contact portion. The information regarding the shear force includes, for example, information regarding a shear displacement of the contact portion. The present disclosure can be applied to, for example, a control device, a control method, an electronic device, a robot, a support system, a gripping system, a program, and the like.
1. A control device comprising:
a supporting force control unit configured to control a supporting force by driving one or more actuators of a gripping device to provide the supporting force for supporting an object via a plurality of contact portions of a contact surface of the gripping device, the supporting force being controlled based on
information regarding a respective shape of each respective contact portion of the contact surface where the supporting force is transmitted from the one or more actuators to the object through contact with the object, and
information regarding a respective shear force detected between each respective contact portion and the object at a plurality of positions of the respective contact portion,
wherein the information regarding the respective shear force is detected in relation to a center of a pressure detected for each respective contact portion,
wherein the supporting force control unit controls the supporting force based on a sticking ratio between a partial region where static friction is generated on the contact surface and a partial region where dynamic friction is generated on the contact surface, and
wherein the supporting force control unit is implemented via at least one processor.
2. The control device according to claim 1 , wherein
the information regarding the respective shape includes information indicating a curvature of a surface of each respective contact portion, and
the supporting force control unit controls the supporting force based on the information indicating the curvature.
3. The control device according to claim 1 , wherein
the supporting force control unit controls the supporting force based on information regarding a shape of the object.
4. The control device according to claim 1 , further comprising:
a holding unit configured to hold the information regarding the respective shape of each respective contact portion, wherein
the supporting force control unit controls the supporting force based on the information held by the holding unit, and
the holding unit is implemented via at least one non-transitory computer-readable storage medium.
5. The control device according to claim 1 , wherein
the information regarding the shear force includes information indicating a shear displacement amount of each contact portion, and
the supporting force control unit controls the supporting force based on the information indicating the shear displacement amount.
6. The control device according to claim 5 , wherein
the supporting force control unit controls the supporting force based on the information indicating the shear displacement amount for each direction.
7. The control device according to claim 5 , wherein
the supporting force control unit controls the supporting force based on the information indicating the shear displacement amount calculated by use of detected information regarding the shear force.
8. The control device according to claim 1 , further comprising:
a drive control unit configured to
control driving of a support unit that supports the object, and
cause the object to be supported with the supporting force controlled by the supporting force control unit.
9. The control device according to claim 1 , wherein
the supporting force control unit controls a supporting force based on a detection result of the supporting force applied to the object.
10. The control device according to claim 1 , wherein
the supporting force control unit controls the supporting force based on a detection result of a position or an orientation of a support unit that supports the object or detection results of both of the position and the orientation.
11. The control device according to claim 1 , wherein
the information regarding the shear force includes information regarding a shear displacement of each contact portion, and
the supporting force control unit controls the supporting force based on a distribution of a shear force derived by use of a distribution of a shear displacement amount calculated from a distribution of the detected information regarding the shear displacement.
12. The control device according to claim 11 , wherein
the supporting force control unit controls the supporting force based on a time-series change in the distribution of the shear force.
13. The control device according to claim 11 , wherein
the sticking ratio is calculated by use of the distribution of the shear force.
14. The control device according to claim 13 , wherein
the supporting force control unit controls the supporting force based on a target sticking ratio, which is a target value of the sticking ratio.
15. The control device according to claim 1 , wherein
the supporting force control unit controls the supporting force based on rotational slip, which is a slip of the object relative to each contact portion in a rotation direction.
16. The control device according to claim 15 , wherein
the supporting force control unit controls the supporting force based on a detection result of a distribution of the detected pressure applied to the object by each contact portion.
17. The control device according to claim 1 , wherein
the supporting force control unit controls the supporting force based on a friction coefficient between the object and each contact portion.
18. The control device according to claim 1 , further comprising:
a position control unit configured to control a position at which each contact portion of the contact surface with having one or more curvatures comes into contact with the object,
wherein the position control unit is implemented via at least one processor.
19. The control device according to claim 1 , wherein
the information regarding the respective shape of each respective contact portion relates to a contact shape at a tip of each respective contact portion.
20. The control device according to claim 1 , wherein
the sticking ratio is calculated by use of the distribution of the shear force for each respective contact portion of the contact surface.
21. A control method comprising
controlling a supporting force by driving one or more actuators of a gripping device to provide the supporting force for supporting an object via a plurality of contact portions of a contact surface of the gripping device, the supporting force being controlled based on
information regarding a respective shape of each respective contact portion of the contact surface where the supporting force is transmitted from the one or more actuators to the object through contact with the object, and
information regarding a respective shear force detected between each respective contact portion and the object at a plurality of positions of the respective contact portion,
wherein the information regarding the respective shear force is detected in relation to a center of a pressure detected for each respective contact portion, and
wherein the supporting force is controlled based on a sticking ratio between a partial region where static friction is generated on the contact surface and a partial region where dynamic friction is generated on the contact surface.
22. A non-transitory computer-readable storage medium having embodied thereon a program, which when executed by a computer causes the computer to execute a method, the method comprising:
controlling a supporting force by driving one or more actuators of a gripping device to provide the supporting force for supporting an object via a plurality of contact portions of a contact surface of the gripping device, the supporting force being controlled based on
information regarding a respective shape of each respective contact portion of the contact surface where the supporting force is transmitted from the one or more actuators to the object through contact with the object, and
information regarding a respective shear force detected between each respective contact portion and the object at a plurality of positions of the respective contact portion,
wherein the information regarding the respective shear force is detected in relation to a center of a pressure detected for each respective contact portion, and
wherein the supporting force is controlled based on a sticking ratio between a partial region where static friction is generated on the contact surface and a partial region where dynamic friction is generated on the contact surface.