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Answer by Koyovis for How does hydraulic actuator servo valve feedback work?
The actuator in the first picture is a position follower system and only works as intended if the servo valve is closed as a consequence of the resulting piston displacement. The system in the picture...
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"I assume this is a command for the cylinder to move to the right." If you assume this is a command for the cylinder to move to the left then the feedback is negative and the mechanism is homeostatic....
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How does hydraulic actuator servo valve feedback work?
The book Aircraft Systems uses the following diagram for a mechanically controlled hydraulic linear actuator (for moving a control surface e.g. an aileron):The following explanation is given about its...
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