Sagem Defense Securite

Daniel Hors

Yvon Joncour

Jean-François Weibel

Francis Lepore

The invention relates to a method for monitoring the output of an electromechanical actuator of the rotary-linear type in order to detect a gradual seizing thereof, wherein said method comprises: measuring the intensity, representative of the motor torque, of the electrical current powering an induction winding of the actuator and the axial stress undergone by an actuator rod; calculating the ratio (axial stress undergone by an actuator rod/motor torque) representative of the global output of the actuator and of its present state; and generating an evaluation of the present condition of the actuator based on its present state and optionally on previous stored states and on outer parameters.

Method for monitoring the output of an electromechanical actuator of the rotary-linear type

A device for artificially restoring an opposing force for a device for remotely controlling an aircraft control surface, the device comprising: an actuator member () mounted to pivot about an axis () and entrain a rotary shaft (); a stationary finger () parallel to said shaft () and supported at a radial distance from the shaft; a moving finger () secured to the shaft and supported at the same radial distance as the stationary finger, both fingers being parallel to the shaft; a slab () supported at the same radial distance as the fingers and disposed beside them; a first spring () between the stationary finger and the slab; and a second spring () between the moving finger and the slab.

Device for artificially restoring an opposing force for a device for remotely controlling aircraft control surfaces

A device for remotely controlling the control surfaces of an aircraft, the device comprising: an actuator member pivotable about an axis and entraining a rotary shaft; a stationary finger parallel to the shaft and supported at a radial distance from the shaft; a moving finger secured to the shaft and supported at a radial distance therefrom, both fingers being parallel to the shaft; a first slab supported at a radial distance from the shaft beside the two fingers on one side thereof and suitable for turning about the axis of the shaft; a second slab supported at a radial distance from the shaft beside the two fingers on their side opposite from the first slab, and suitable for turning about the axis of the shaft; a third slab supported at a radial distance from the shaft beside the second slab at an angular distance therefrom and suitable for turning about the axis of the shaft; a first spring between the first and second slabs; and a second spring between the first and third slabs.

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Puteaux, France

Daniel Hors