Intelligent Vibration Isolator System with Automatic Adjustment of Stiffness and Damping and Vibration Testing Method

Abstract

An intelligent vibration isolator system that automatically adjusts stiffness and damping and a vibration testing method. The system includes a metal mesh intelligent vibration isolator and a computer; the metal mesh intelligent vibration isolator includes a mounting plate, an installation core, a shell, a damping wall, Installation core matching disk, metal mesh, servo motor, damping adjustment mechanism, first acceleration sensor, second acceleration sensor, stiffness adjustment mechanism; the first acceleration sensor is installed on the installation core matching disk, and the second acceleration sensor is installed inside the shell on the upper wall; the output ends of the two acceleration sensors are connected to the input end of the computer respectively, and the input end of the servo motor is connected to the output end of the computer. When the frequency or amplitude of the vibration source changes, the two acceleration sensors collect the vibration signals of the object to be isolated and the vibration source respectively. The computer issues instructions to adjust the damping and stiffness in real time according to the vibration conditions to ensure that the vibration source is isolated when the vibration state of the vibration source changes. The vibration state of the object always meets the vibration isolation requirements.

Description

technical field [0001] The invention belongs to the technical field of vibration control, and in particular relates to an intelligent vibration isolator system for automatically adjusting stiffness and damping and a vibration testing method. Background technique [0002] High-end mechanical equipment, such as large compressors, large-scale engineering machinery, gas turbines, aviation equipment, high-end CNC machine tools, surface ships, deep-water submarines, etc., are mostly in continuous operation, and the working speed of these equipment is getting higher and higher. The structure is becoming more and more complex, the size is getting bigger and bigger, the precision is getting higher and higher, the structural components are getting more and more precise, and the functions are getting more and more complete. The reliability and safety of its work, the vibration suppression and vibration isolation of the outside world and itself needs are becoming more and more urgent. ...

AI Technical Summary

Problems solved by technology

The disadvantage of the single-layer vibration isolation system is: when the frequency of the excitation force of the vibration source is low, the stiffness of the shock absorber must be very small, resulting in the system being too soft, poor in stability, unable to withstand severe shaking and sudden impact, In the mid-high frequency region, due to the standing wave effect inside the shock absorber, the actual vibration isolation effect will be affected to a certain extent

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