Robotic surgical system with joint motion controller adapted to reduce instrument tip vibrations
First Claim
1. A robotic surgical system comprising:
- a surgical instrument;
a robotic arm assembly holding the surgical instrument;
a master manipulator; and
a controller configured to control movement of the surgical instrument in response to user operation of the master manipulator in such a manner that vibrations experienced at a tip of the surgical instrument are reduced by filtering an output of the master manipulator that may induce the vibrations while at least partially compensating in a feedback path to the master manipulator for delay induced by such filtering so as to enhance stability of such control.
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Accused Products
Abstract
A robotic surgical system has a robot arm holding an instrument for performing a surgical procedure, and a control system for controlling movement of the arm and its instrument according to user manipulation of a master manipulator. The control system includes a filter in its forward path to attenuate master input commands that may cause instrument tip vibrations, and an inverse filter in a feedback path to the master manipulator configured so as to compensate for delay introduced by the forward path filter. To enhance control, master command and slave joint observers are also inserted in the control system to estimate slave joint position, velocity and acceleration commands using received slave joint position commands and torque feedbacks, and estimate actual slave joint positions, velocities and accelerations using sensed slave joint positions and commanded slave joint motor torques.
210 Citations
25 Claims
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1. A robotic surgical system comprising:
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a surgical instrument; a robotic arm assembly holding the surgical instrument; a master manipulator; and a controller configured to control movement of the surgical instrument in response to user operation of the master manipulator in such a manner that vibrations experienced at a tip of the surgical instrument are reduced by filtering an output of the master manipulator that may induce the vibrations while at least partially compensating in a feedback path to the master manipulator for delay induced by such filtering so as to enhance stability of such control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification