Electromagnetic electromechanical coupling circuit tuning vibration absorber

Abstract

Disclosed is an electromagnetic electromechanical coupling circuit tuning vibration absorber. The electromagnetic power generation Faraday principle is adopted, a rotor magnetic field is cut through a coil for converting vibrating kinetic energy into electric energy, then, the coil is connected to a load circuit, and circuit current changes by adjusting impedance characteristics of the load circuit. Due to the fact that the current-carrying coil generates ampere force in a magnetic field, different currents generate ampere force of different magnitudes, different feedback effects can be generated on an existing mechanical system, and therefore different changes of the rigidity and damping of the existing mechanical system are caused through an electromechanical coupling effect. The impedance characteristics can be adjusted through the digital circuit. Compared with traditional mechanical adjustment, adjustment of the electromagnetic coupling mode is rapider and easier, the needed control system is relatively simple and stable, and integration, microminiaturization and low energy consumption of the adjustable vibration absorber can be better achieved.

Description

technical field [0001] The invention belongs to the field of mechanical vibration control, in particular to an electromagnetic electromechanical coupling circuit tuning vibration absorber. Background technique [0002] During mechanical operation, excessive vibration can cause serious damage to structures and machines. In some cases, the suppression of vibration is particularly important, such as vibration problems in aerospace missions. Even small vibrations can last for a long time due to the low damping in weightlessness and vacuum in aerospace. On the other hand, with the improvement of the quality of modern life, people's requirements for the surrounding environment are getting higher and higher, and the control of mechanical vibration is no longer just satisfied with the design standards of mechanical mechanisms, but also needs to fully meet people's needs for the comfort of mechanical products . [0003] The dynamic vibration absorber was invented by Frahm in 1909....

AI Technical Summary

Problems solved by technology

[0004] The adjustment of mass stiffness is usually achieved by changing the mechanical structure, adjusting the position of the center of mass, increasing the prestress of the continuum, and adding additional force. These methods require mechanical adjustment, which requires a large amount of energy. The control system is also relatively complex, and the design and operation costs are very high

The damping is often designed at the beginning of the design, and it is difficult to adjust it during the working process.

These factors limit the application and development of adjustable dynamic vibration absorbers

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