Active and passive composite electromagnetic vibration isolation device and design method thereof

Abstract

The invention discloses an active and passive composite electromagnetic vibration isolation device and a design method thereof. The active and passive composite electromagnetic vibration isolation device comprises an electromagnetic actuator formed by a stator framework, an electromagnetic coil and an armature and used as an active vibration isolation device, a dynamic vibration absorption unit formed by a T-shaped concave support column, an annular rubber pad, a cylindrical concave support column, a steel spring and an I-shaped mass block and a rubber vibration isolator are connected in parallel to form a passive vibration isolation device, the active vibration isolation device and the passive vibration isolation device are connected in series and in parallel through an upper end cover, a four-hole disc, a lower end cover and an arc-shaped mass block to form a multi-stage vibration isolation system, and the inner wall of a cylindrical shell is fixedly connected with the outer wall of the rubber vibration isolator. The vibration isolation device has the advantages of being wide in vibration isolation frequency band, high in bearing capacity, precise and controllable in vibration isolation and high in engineering applicability, and has great application prospects in the field of vibration isolation of power devices.

Description

technical field [0001] The invention belongs to the technical field of vibration control, and in particular relates to an active and passive composite electromagnetic vibration isolation device and a design method thereof. Background technique [0002] The dynamic load and noise generated by mechanical vibration will seriously affect the machining accuracy, work efficiency, operation stability and service life of the equipment. In order to effectively reduce the impact of complex vibration on the operation performance of equipment, vibration isolation (referred to as vibration isolation) technology has become an important tool for controlling harmful mechanical vibration. important technical means. [0003] According to different principles and implementation methods, vibration isolation technology can be divided into three forms: passive vibration isolation, active vibration isolation and active and passive vibration isolation. Among them, passive vibration isolation techn...

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Problems solved by technology

Among them, passive vibration isolation technology uses elastic elements, damping elements and inertial elements to suppress or eliminate harmful vibrations. It has the advantages of wide vibration isolation frequency band, no energy consumption, simple structure, and easy implementation. The effective suppression of high-frequency vibration cannot meet the needs of low-frequency vibration isolation; the active vibration isolation technology achieves the purpose of suppressing or eliminating vibration by introducing the secondary vibration source into the controlled system. Precision and other characteristics, but the pure active vibration isolation design has a complex structure, huge energy consumption, and is only effective for low-frequency vibrations

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