Skf Magnetic Mechatronics

Aktiebolaget Skf

Lakdar Sadi-Haddad

Joaquim Da Silva

Olivier Lemarchand

Andre Deandrade

Lloyd Brown

David Beggs

Gregory Cossart

Francois Caire

Joaquim Dasilva

Grégory Cossart

The method for obtaining a temporal model of a magnetic bearing provides the generation of reference data representative of characteristics of the bearing. The method includes the production of the temporal model of the magnetic bearing from the reference data having temporal data.

Method for obtaining a temporal model of a magnetic bearing, device for modelling the magnetic bearing and associated systems

The present invention relates to a transmission belt providing a belt member, and at least one RFID tag attached to the belt member, the at least one RFID tag including an integrated circuit, and an antenna connected to the integrated circuit for transmitting a signal indicative of a state of the transmission belt. The signal indicative of the state of the transmission belt is determined on the basis of a current deflection of the antenna.

Transmission belt

The invention concerns an electrical installation providing an apparatus, a three-phase inverter and a control device, the inverter being adapted for generating a three-phase current presenting a first frequency for operating the apparatus and an undesired frequency component presenting a second frequency. The control device is adapted for measuring a parameter of each phase of the current, the measured parameters forming a measurement vector, and for calculating a Clarke transform, providing a first vector represented in a first basis of a two-dimensional vector space, of the measurement vector. The control device is adapted for generating a representation of the first vector in a second basis of the vector space, the second basis rotating at the second frequency with respect to the first basis.

Electrical installation comprising an electrical apparatus, a three-phase inverter and a control device for controlling the inverter, and related method

An electronic magnetic bearing controller for controlling the position of a rotor of an electrical machine supported by an active magnetic bearing the position of which being measured by at least one inductive position sensor having an inductive coil, comprising an automatic reactive power compensation device for automatically compensating the reactive power consumed by the inductive position sensor.

Electronic magnetic bearing controller with an automatic reactive power compensation device

A digital nonlinear corrector of an active magnetic bearing receiving an input signal x(t) and outputting an output control signal u(t) for controlling the position of said active magnetic bearing, the input signal being digitalized by a ADC circuit and provided to an adder, the digital nonlinear corrector comprising a closed control loop delivering an intermediary sequence of numbers y[kT] and having a direct branch comprising a first proportional gain circuit and a feedback branch comprising a series connection of a low-pass filter and a dead zone circuit, such that said low-pass filter is activated when determined upper and lower values of said output control signal are reached, the output control signal reproducing the input signal when these determined upper and lower values are not reached.

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Le Perreux-sur-Marne, France

Lakdar Sadi-Haddad