Magneto-rheological technology based engine vibration absorber

Abstract

The invention discloses a magneto-rheological technology based engine vibration absorber. The magneto-rheological technology based engine vibration absorber comprises a fixing seat, a vibration absorbing module and a control module, wherein the fixing seat is a vibration control object; the vibration absorbing module comprises a magnetic circuit iron core, a magneto-rheological elastic body, a vibration absorbing mass block, a coil baffle, a magnet exciting coil, an upper clamping plate, a magnetism insulation block and a lower clamping plate; the control module comprises an acceleration sensor, a data acquiring system, a control host and a DC power supply; the magnet exciting current in the magnet exciting coil can be adjusted so as to adjust the rigidity of the magneto-rheological elastic body, and as a result, the vibration frequency demand of the engine vibration absorbing is met. The magneto-rheological technology based engine vibration absorber has the advantages of being good in vibration absorbing effect, wide in applicable frequency band range, low in energy consumption, and simple in structure.

Description

technical field [0001] The invention relates to a damping device applied to machinery and electrical equipment, in particular to an engine damping device based on magneto-rheological technology. Background technique [0002] The engine is the core component of the vehicle, and it is also the main source of noise and vibration of the vehicle. When the engine is working, its vibration will affect the reliability and life of the on-board equipment, and will cause noise and vibration in the cockpit, affecting the comfort of the ride. Therefore, in view of the vibration problem of the engine, it is of great significance to design a vibration control device for the engine system. [0003] In order to reduce the impact of engine vibration, a shock absorber is usually added to the engine system, and the structural form, dynamic parameters and coupling relationship with the target system are properly selected to change the vibration state of the engine system, thereby reducing the e...

AI Technical Summary

Problems solved by technology

For example, the magnetorheological elastomer frequency-shifting vibration absorber disclosed in the patent application number CN200520076452.4 has a good effect on the vibration control of flexible structures, but it is difficult to implement large-scale vibration control

In addition, the patent application number CN201310014657.9 discloses a flexible manipulator vibration damping device and method based on magneto-rheological technology, which can change the stiffness parameters of the shock absorber by adjusting the voltage of the electromagnetic coil, but in this method, the iron core and the like are used as The vibrator of the vibration damping system has high requirements on the strength of the magnetorheological elastomer, which limits the application of its vibration absorber

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