SYSTEMS AND METHODS FOR PROCESSING LIMB MOTION
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Abstract
Control systems and methods are disclosed for processing a time series of signals associated with the movement of a device associated with a limb. The time series of motion signals is filtered, such as thorough an autoregressive filter, and compared to stored data sets representing a limb-motion event and/or phase. In certain examples, a plurality of accelerometers generate the time series of motion signals based at least on acceleration measurements in three orthogonal directions and/or planes. The acceleration measurements may relate to the movement of an artificial limb, such as a prosthetic or orthotic device. Upon determining an event and/or phase of limb motion, the control system may trigger an actuator to appropriately adjust one or more prosthetic or orthotic joints.
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Citations
50 Claims
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1-30. -30. (canceled)
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31. A system comprising:
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an actuatable prosthetic device being moveable about a joint; at least one sensor; a control system comprising a processor and memory, the control system communicatively coupled to the at least one sensor and configured to; receive a time series of motion signals indicative of a movement of the prosthetic device, filter at least one time series of motion signal of the time series of motion signals, process the filtered at least one time series of motion signal to identify at least one limb-motion category, and cause an actuator to control movement of the actuatable prosthetic device based at least in part on the identified at least one limb-motion category. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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39. A method of controlling operation of an actuatable prosthetic device being moveable about a joint, the method comprising:
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producing, using at least one sensor, a time series of motion signals indicative of a movement of the actuatable prosthetic device; receiving at a processor the time series of motion signals indicative of the movement of the prosthetic device; filtering, using said processor, selected at least one time series of motion signal of the time series of motion signals; processing, using said processor, the filtered at least one time series of motion signal to identify at least one limb-motion category; and causing an actuator to control movement of the actuatable prosthetic device based at least in part on the identified at least one limb-motion category. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46)
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47. A system comprising:
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a means for producing a time series of motion signals indicative of a movement of an actuatable prosthetic device; a means for receiving the time series of motion signals indicative of the movement of the actuatable prosthetic device; a means for filtering selected at least one time series of motion signal of the time series of motion signals; a means for processing the filtered at least one time series of motion signal to identify at least one limb-motion category; and a means for controlling movement of the actuatable prosthetic device based at least in part on the identified at least one limb-motion category. - View Dependent Claims (48, 49, 50)
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Specification