| 摘要 |
FIELD: mechanical engineering. SUBSTANCE: device for dampening vibrations of object 2 has housing 1, polarized electric magnet 3, secured to housing 1 by its induction coil 4 and to vibration-protected object 2 by its armature 5. Magnetic portion of armature 5 is arranged inside induction coil 4 in zone of constant attraction. Device is also provided with spring-loaded or elasto-flexible member 6 of constant stiffness which is secured to object 2 on diametrically opposite side of polarized electromagnet 3. Device includes also force sensor 7 mounted between member 6 and housing 1 and secured to them; DC amplifier 8 electrically connected with force sensor 7 and induction coil 4 of polarized electromagnet 3. Device operates as follows: amount of response of flexible member 6 applied to object 2 from below is measured by means of force sensor 7 and amount and sign of response of polarized electromagnet 3 applied to object 2 on opposite side are regulated through change of intensity of current in induction coil 4 of polarized electromagnet so that the resultant of response of flexible member 6 and polarized electromagnet 3 is constant at all times. EFFECT: enhanced efficiency of vibration protection and enhanced reliability through simplification of construction. 2 cl, 1 dwg |
