Magnetic Particle Driven Vibration Absorption System

Abstract

The invention provides a magnetic particle driven shock absorption system. A guide mechanism and a magnet exciting coil are firmly connected to a vibration isolation platform. A shock absorber is connected with the vibration isolation platform through an elastic component and moves relative to the vibration isolation platform through deformation of the elastic component. A rotary magnetic particle is arranged in the deformation direction of the elastic component. The magnetic particle driven shock absorption system is reasonable in structure and easy and convenient to assemble. According to the magnetic particle driven shock absorption system, the dimension of the rotary magnetic particle in the extension direction of a spring can be changed by adjusting the deflection position or angle of the rotary magnetic particle relative to the magnet exciting coil, then the squeezing degree of the spring is changed, namely the extension degree or rigidity of the spring interacting with a permanent magnet rotor (when in a balanced position / initial position) can be adjusted or changed by applying magnetic field force under the action of a magnetic field, then the system inherent frequency of the shock absorption system can be adjusted or changed in this way, and accordingly the active or semi-active power shock absorption effect of vibration of a controlled object (master oscillator) system is achieved.

Description

technical field [0001] The invention relates to a vibration absorption system, in particular to a magnetic particle driven vibration absorption system. Background technique [0002] Vibration is a common problem in the field of precision engineering, and the research on vibration reduction and isolation theory, technology and devices is also very extensive. Because the dynamic vibration absorber can realize the vibration control effect through surface adsorption without affecting any structure of the main vibrating body (controlled object), the structure design is simple, and the installation and use are very convenient, so it has been widely valued. [0003] However, when the design structure of the dynamic vibration absorber is determined, the frequency of vibration reduction and isolation is determined. Based on the principle of vibration absorption that achieves resonance with the controlled object, when the vibration frequency of the controlled object changes, the vibra...

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Problems solved by technology

The disadvantage of this method is that the adjustment method cannot be adjusted online when the controlled object is working, and the structure is fixed after each adjustment, so the natural frequency is determined, and it still cannot solve the most effective vibration absorber under the condition that the controlled object frequency changes with time. Corresponding adjustment of frequency

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