Differential magnetic suspension vibration isolator

Abstract

The invention discloses a differential magnetic suspension vibration isolator which comprises an upper annular E-shaped electromagnet (15), a lower annular E-shaped electromagnet (11), an upper coil winding (8), a lower coil winding (10), a displacement sensor (1), a connecting flange plate (3), an adjusting nut (4), a spring (6), a linear bearing (7) and an armature (9). The upper annular E-shaped electromagnet (15) and the lower annular E-shaped electromagnet (11) are fixed onto a shell (14) and a base (12) respectively, the upper coil winding (8) and the lower coil winding (10) are fixed onto the upper annular E-shaped electromagnet (15) and the lower annular E-shaped electromagnet (11) respectively, the displacement sensor (1) is fixed onto the shell (14) through a support (16), the connecting flange plate (3), the adjusting nut (4), the spring (6), the linear bearing (7) and the armature (9) are sequentially connected in series from top to bottom through connecting rods (5), the shell (14) is fixed onto the base (12), and a sleeve (13) is fixed into the shell and matched with a spiral groove in the inner wall of the shell to form a sealed cooling water channel. The differential magnetic suspension vibration isolator has the advantages of simple structure, small size, non-contact, long service life, rapid response and easiness in regulating electromagnetic force, and has an excellent application prospect in the field of active vibration noise control.

Description

Technical field [0001] The invention relates to an active vibration isolator, specifically a differential magnetic suspension vibration isolator, which has a good application prospect in the field of active noise control. Background technique [0002] Active vibration isolation technology is a control method that "controls movement by motion", also known as active control. Active vibration isolation introduces a secondary vibration source into the controlled system, and adjusts the output of the secondary vibration source through a certain control method, so that the vibration generated by it is offset with the vibration of the main vibration source (interference), thereby achieving vibration isolation purpose. Active vibration isolation technology has greater flexibility and adaptability, and can suppress ultra-low frequency vibration and broadband random vibration. [0003] With the rapid development of national aerospace, ship power, mechanical engineering and vehicle engineer...

AI Technical Summary

Problems solved by technology

The working principles of hydraulic and pneumatic active vibration isolators are similar, and both have the advantages of simple structure, large displacement and output force, and high reliability. It is only suitable for vibration control occasions with low frequency and high control force requirements; the piezoelectric active vibration isolator has a fast response and can be applied in a vacuum environment, but its active control force per unit volume is small; / The magneto-rheological fluid damper can generate a large force per unit volume, but its control is difficult

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