DYNAMIC STRESS GENERATORS INCLUDING AT LEAST TWO BALLASTS AND ACTUATOR INCLUDING SUCH GENERATORS

The invention relates to a dynamic stress generator (100) that includes: - a supporting shaft (110); - a first rotor (120) comprising: an internal bore (121) housing said shaft (110) and bearings (R1, R2) so that the first rotor (120) is mounted rotatably in relation to the shaft, an external bore (122) with a first set (180) of permanent magnets, a connecting zone (123) between the internal and external bores of the first rotor, said connecting zone being intended to house coiling able to interact with the first set of permanent magnets in order to constitute a motor for the first rotor; - a first ballast (130) fixed to the internal bore of the first rotor and mounted opposite the external bore of the first rotor; - a second rotor (140) mounted rotatably in relation to the first rotor, via an antifriction component (160), and comprising: an internal bore (141) housing the internal bore of the first rotor (120), so that said internal bores are concentric, an external bore (142) with a second set (181) of permanent magnets, a connecting zone (143) between the internal and external bores of the second rotor, said connecting zone being intended to house coiling able to interact with the second set of permanent magnets in order to constitute a motor for the second rotor; and - a second ballast (150) fixed to the internal bore of the second rotor and mounted opposite the external bore of the second rotor. L'invention concerne un générateur (100) d'efforts dynamiques comportant : - un axe de support (110) ; - un premier rotor (120) comprenant : un alésage interne (121) logeant ledit axe (110) et des roulements (R1, R2) de sorte que le premier rotor (120) est monté à rotation par rapport à l'axe, un alésage externe (122) muni d'un premier ensemble (180) d'aimants permanents, une zone de connexion (123) entre les alésages interne et externe du premier rotor, ladite zone de connexion étant destinée à loger un bobinage apte à coopérer avec le premier ensemble d'aimants permanents pour constituer un moteur du premier rotor, - un premier balourd (130) fixé à l'alésage interne du premier rotor et monté en vis-à-vis de l'alésage externe du premier rotor ; - un deuxième rotor (140) monté à rotation par rapport au premier rotor, par l'intermédiaire d'un composant antifriction (160) et comprenant : un alésage interne (141) logeant l'alésage interne du premier rotor (120) de sorte que lesdits alésages internes sont concentriques, un alésage externe (142) muni d'un deuxième