Methods of controlling motion of under-actuated joints in a surgical set-up structure
First Claim
1. A method for configuring a tele-surgical system,the method comprising:
- accelerating a platform linkage that supports a first robotic arm by driving one or more driven joints supporting the platform linkage, thereby imparting forces or moments to the first robotic arm;
inhibiting a passive movement of a first joint of the first robotic arm when passive movement of the first joint in response to the forces or moments on the first robotic arm moves the first joint away from a reference state of the first joint, the reference state corresponding to a desired configuration of the first robotic arm; and
facilitating the passive movement of the first joint when the passive movement of the first joint in response to the forces or moments on the first robotic arm moves the first joint towards the reference state of the first joint.
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Accused Products
Abstract
Robotic and/or surgical devices, systems, and methods include kinematic linkage structures and associated control systems configured to control movement of passive or under-actuated joints by coordinated joint braking of the under-actuated joints concurrent with driving of one or more driven joints. In one aspect, the methods include driving a set-up structure by pivoting an orienting platform supporting multiple manipulators back-and-forth in opposite directions while selectively braking the under-actuated joints to inhibit passive joint movement away from a reference joint state and releasing braking to facilitate movement of the joints toward the reference until each of the under-actuated joints of the multiple manipulators are at the respective reference states. In an other aspect, a joint brake controller is provided that receives a motor torque input and converts the input to a brake control input by determining an impulse applied variable braking to deplete the impulse over time.
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Citations
28 Claims
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1. A method for configuring a tele-surgical system,
the method comprising: -
accelerating a platform linkage that supports a first robotic arm by driving one or more driven joints supporting the platform linkage, thereby imparting forces or moments to the first robotic arm; inhibiting a passive movement of a first joint of the first robotic arm when passive movement of the first joint in response to the forces or moments on the first robotic arm moves the first joint away from a reference state of the first joint, the reference state corresponding to a desired configuration of the first robotic arm; and facilitating the passive movement of the first joint when the passive movement of the first joint in response to the forces or moments on the first robotic arm moves the first joint towards the reference state of the first joint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 23, 24, 25)
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14. A method for configuring a tele-surgical system, the method comprising:
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accelerating a platform linkage that supports a first robotic arm by driving one or more driven joints supporting the platform linkage, thereby imparting forces or moments to the first robotic arm, wherein the first robotic arm comprises a plurality of joints, each joint of the plurality of joints being configured to selectively allow a passive joint movement by selective application of a respective joint brake, wherein each joint of the plurality of joints has an associated reference state corresponding to a desired configuration of the first robotic arm; for each joint of the plurality of joints, inhibiting the passive movement of the joint when the passive movement of the joint in response to the forces and or moments on the first robotic arm moves the joint away from the associated reference state; and for each joint of the plurality of joints, facilitating the passive movement of the joint when the passive movement of the joint in response to the forces or moments on the first robotic arm moves the joint towards the associated reference state. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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26. A method for configuring a tele-operational system, the method comprising:
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accelerating a platform linkage that supports a first robotic arm by driving one or more driven joints supporting the platform linkage, thereby imparting a force or moment to the first robotic arm; sensing a joint torque of a first joint of the first robotic arm; determining if a passive movement of the first joint of the first robotic arm in response to the force or moment moves the first joint towards or away from a reference state of the first joint, the reference state corresponding to a desired configuration of the first robotic arm; inhibiting the passive movement of the first joint of the first robotic arm when the passive movement of the first joint in response to the force or moment moves the first joint away from the reference state, wherein inhibiting the passive movement of the first joint comprises at least partly applying braking to the first joint; facilitating the passive movement of the first joint when the passive movement of the first joint in response to the force or moment moves the first joint towards the reference state of the first joint, wherein facilitating the passive movement comprises at least partly releasing braking applied to the first joint; and halting the passive movement of the first joint of the first robotic arm when the first joint is at the reference state. - View Dependent Claims (27, 28)
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Specification