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US 2019/0078669 A1Published application
Multi-bar linkage mechanism
AssigneeWhippany Actuation Systems LLC
InventorShijie LIU
Life of this patent
Estimating the term…
Abstract
Systems provide and methods utilize a multi-bar linkage in conjunction with an actuator to provide mechanical advantage which increases as a control surface moves towards the extremes of its operating envelope.
Claims20
A system configured to provide a concave curve of torque against output position, comprising:
- a three-way linkage joint;
- a control link having a control ground end and a control joint end, wherein the control ground end is rotatably coupled to a fixed portion of a controlled system, and wherein the control joint end is rotatably coupled to the three-way linkage joint;
- a drag link having a drag drive end and a drag joint end, wherein the drag joint end is rotatably coupled to the three-way linkage joint;
- a drive link having a drive drag end and a drive actuator end, wherein the drive drag end is rotatably coupled to the drag drive end, and wherein the drive actuator end is operatively coupled to an actuator;
- an output link having an output surface end and an output joint end, wherein the output joint end is rotatably coupled to the three-way linkage joint;
- and
- a surface link having a surface output end and a surface control end, wherein the surface output end is rotatably coupled to the output surface end, and wherein the surface control end is operatively coupled to a movable surface of the controlled system.
4 more elements
A method of controlling a movable control surface of a controlled system, comprising:
- driving a multi-bar linkage that is mechanically coupled to a fixed portion of the controlled system, the movable control surface, and an actuator,
- wherein a control link couples the multi-bar linkage to the fixed portion,
- wherein a drive link couples the multi-bar linkage to the actuator,
- wherein the surface link couples the multi-bar linkage to the movable control surface,
- wherein a drag link couples the drive link to the control link, and
- wherein an output link couples the surface link to the control link.
3 more elements
Dependencies are inferred from the claim text.