Invention Grant
- Patent Title: Advanced gait control system and methods enabling continuous walking motion of a powered exoskeleton device
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Application No.: US16761928Application Date: 2018-04-23
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Publication No.: US11679056B2Publication Date: 2023-06-20
- Inventor: Skyler Dalley , Ryan Farris , Spencer Murray
- Applicant: Ekso Bionics Holdings, Inc.
- Applicant Address: US CA San Rafael
- Assignee: Ekso Bionics Holdings, Inc.
- Current Assignee: Ekso Bionics Holdings, Inc.
- Current Assignee Address: US CA San Rafael
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- International Application: PCT/US2018/028787 2018.04.23
- International Announcement: WO2019/156698A 2019.08.15
- Date entered country: 2020-05-06
- Main IPC: A61H3/00
- IPC: A61H3/00 ; G16H40/67 ; G16H40/40 ; A61H1/02 ; B25J9/00 ; B25J13/08 ; G05B19/042

Abstract:
A method of controlling an exoskeleton mobility device includes executing a control application with an electronic controller to perform: sensing at least one of an angular position or angular velocity of a stance/trailing leg during a single support dynamic state of a gait cycle; determining whether the angular position satisfies an advanced gait threshold; and when it is determined that the angular position satisfies the advanced gait threshold, the control system employs advanced gait control in which a duration of double support states between single support dynamic states is minimized. For advanced gait control the control system controls such that hip joint component velocities are non-zero during transitions from swing states to stance states, and knee joint component velocities are non-zero during transitions from stance states to swing states of the gait cycle. Each step of the gait cycle thus blends into a next step by way of hip joint component swing-to-stance extension, and/or knee joint component stance-to-swing flexion.
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