Messier-bugatti-dowty

Safran Landing Systems

Messier-bugatti Inc.

Etienne Annee

Florent Nierlich

Francois-Noel Leynaert

Raphael Pierra

François-Noël Leynaert

Raphaël Pierra

Anas Farid

An electromechanical actuator comprising an actuator member and an electric motor () adapted to drive the actuator member. The electric motor () comprises a rotor portion (), a stator portion () comprising a yoke-forming body () and a set of coils received in slots () in the body (), and at least one electrical module (). The electrical module is adapted to generate an electrical power supply current (Ia) for the electric motor (), which current flows in the set of coils. The electrical module () is carried by the body ().

Electromechanical actuator

The invention provides an emergency power network for aircraft, for powering actuator motors () connected to the network, the network comprising a power bus () adapted to convey three-phase AC power generated by at least one DC/AC converter () that is powered by a DC source of the aircraft, the converter being fitted with modulator means for modulating the voltage and/or the frequency of the three-phase power generated thereby.

Control network for single- or multi-motor actuators, the network being particularly adapted to aviation applications such as powering the motors of landing-gear hook units

The invention relates to a method of limiting a current isupplied by a DC power supply, the method comprising: is calculated in which i is a current that is an image of the power supply current i, the averaged quantity being reset to zero at the beginning of each period, with the switch being caused to be closed so long as said averaged quantity remains below a predetermined current threshold i, and with the switch being caused to be open, otherwise.

Method of limiting a current supplied by a DC power supply

The invention relates to a method of powering at least one brushless DC electric motor having a plurality of phases for powering, the method including the steps of associating a static contactor with the motor for taking input voltage pulses and delivering polyphase voltage pulses to the motor in a manner that is servo-controlled to the angular position of the rotor of the motor, and for generating from a DC voltage source voltage pulses of frequency that is fixed and at a duty ratio that is controllable, thereby forming the input voltage pulses to the static contactor.

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Courbevoie, France

Etienne Annee