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US 11,879,451 B2Granted
Active hydraulic ripple cancellation methods and systems
AssigneeClearMotion, Inc.
InventorsColin Patrick O'Shea, Clive Tucker, Brian Alexander Selden
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AssigneeClearMotion, Inc.
InventorsColin Patrick O'Shea, Clive Tucker, Brian Alexander Selden
Estimating the term…
Presented herein are systems and methods for attenuating flow ripple generated by a hydraulic pump. In certain aspects, a method and system for operating a hydraulic positive displacement pump according to a stabilized command profile are disclosed, such that flow ripple generated by operation of the pump according to the stabilized command profile is attenuated as compared to operation of the pump according to a corresponding nominal command profile. In other aspects, a pressure-balanced active buffer is disclosed that allow for at least partially cancelling flow ripple in a hydraulic circuit comprising a pump. In another aspect, a method for generating ripple maps for a pump is disclosed. Such ripple maps may be used, for example, to determine the stabilized command profile used to operate the pump, or may be used by the pressure-balanced active buffer to counteract ripple in the hydraulic circuit.
A pressure-balanced active buffer for mitigating flow ripple in a hydraulic circuit that hydraulically connects a pump and a load, the pressure-balanced active buffer comprising:
A method for operating a pressure-balanced active buffer, the pressure-balanced active buffer comprising a buffer reservoir, a balance reservoir, a first surface, and a second surface, the method comprising:
Dependencies are inferred from the claim text.