Active backdriving for a robotic arm
First Claim
1. A method for assisting movement of a robotic surgical arm having at least one movable joint, the method comprising:
- generating a first signal comprising a first oscillating waveform having a first frequency and a second oscillating waveform having a second frequency, wherein the second frequency is higher than the first frequency and the second oscillating waveform is modulated on top of the first oscillating waveform; and
driving an actuator in the at least one movable joint based on the first signal to at least partially compensate for friction in the at least one movable joint.
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Accused Products
Abstract
A robotic surgical system includes at least one robotic arm comprising at least one movable joint and an actuator configured to drive the at least one movable joint, and a controller configured to generate a first signal, the first signal comprising a first oscillating waveform having a first frequency and being modulated by a second oscillating waveform having a second frequency, wherein the second frequency is higher than the first frequency. The actuator is configured to drive the at least one movable joint based on the first signal to at least partially compensate for friction in the at least one movable joint.
176 Citations
18 Claims
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1. A method for assisting movement of a robotic surgical arm having at least one movable joint, the method comprising:
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generating a first signal comprising a first oscillating waveform having a first frequency and a second oscillating waveform having a second frequency, wherein the second frequency is higher than the first frequency and the second oscillating waveform is modulated on top of the first oscillating waveform; and driving an actuator in the at least one movable joint based on the first signal to at least partially compensate for friction in the at least one movable joint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A robotic surgical system, comprising:
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at least one robotic arm comprising at least one movable joint and an actuator configured to drive the at least one movable joint; a controller configured to generate a first signal, the first signal comprising a first oscillating waveform having a first frequency and a second oscillating waveform having a second frequency, wherein the second frequency is higher than the first frequency and the second oscillating waveform is modulated on top of the first oscillating waveform; wherein the actuator is configured to drive the at least one movable joint based on the modulated signal to at least partially compensate for friction in the at least one movable joint. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification