Method for Balancing the Movement of Mobile Masses in a Bi-Linear Electrodynamic Motor

• Main Authors: AIGOUY GERALD, TROLLIER THIERRY, BUQUET JONATHAN
• Format: Patent
• Language: English
• Published: 08.03.2012
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

Method for balancing the motion of the magnetized movable masses of a bilinear electrodynamic motor comprising two movable masses moving in opposite senses parallel to the axis (x-x) of the motor, characterized in that the said method comprises the steps of: providing at least one first magnetic sensor and at least one second magnetic sensor which are able to deliver respectively a first electrical signal (s1(t)) and a second electrical signal (s2(t)) respectively representative of the motion of a first and of a second movable mass, recording an error signal ( s(t)) equal to the difference between the said first (s1(t)) and second (s2(t)) electrical signals and performing a harmonic analysis of the said error signal, applying a sinusoidal excitation signal (e1(t)) at a given frequency f0 to the first movable mass, iteratively applying N successive excitation signals (e2n(t)) to the second movable mass, an excitation signal of rank n (0 n N−1) being equal to a Fourier series of order n of fundamental frequency f0, the term of order n of the said series being adjusted in amplitude and in phase so as to minimize the component at the frequency n·f0 of the said error signal, taking the excitation signal (e2N-1(t)) of rank N−1 as excitation signal for the second movable mass.