Active magneto-rheological torsional vibration damper

Abstract

The invention discloses an active magneto-rheological torsional vibration damper. According to the adopted technical scheme, the active magneto-rheological torsional vibration damper comprises an acceleration sensor used for measurement, a controller electrically connected with the acceleration sensor and a magneto-rheological torsional vibration damper capable of changing the internal damping. The active magneto-rheological torsional vibration damper is characterized in that the magneto-rheological torsional vibration damper comprises a connecting plate which is formed by two half-moon platesin a connection mode, the connecting plate comprises a through hole which sleeves a shell, a rubber gasket which is connected with the through hole is arranged on the inner side of the through hole,and a movable rod is connected to the inner side of the rubber gasket in a sleeved mode. According to the active magneto-rheological torsional vibration damper, the magnitude of current can be changedthrough the controller and the acceleration sensor, and the elasticity and damping change of the damper can be actively controlled; and hinge pins can be quickly installed and replaced, sheets arranged on the left sides of the hinge pins have a protection effect, holes which are quite densely and evenly distributed are formed in a partition plate in a magneto-rheological medium, the more downwardthe magneto-rheological property is in the moving process, the larger the damping is, and therefore the stability of the whole device is improved.

Description

technical field [0001] The invention relates to the technical field of automobile shock absorbers, in particular to an active magneto-rheological torsional vibration shock absorber. Background technique [0002] Magneto-rheological shock absorber under the action of strong magnetic field makes the chain beam structure formed by magnetic particles between the two pole plates span across the pole plates like a bridge, hindering the normal flow of fluid. The traditional shock absorber is affected by the structure of the shock absorber. Due to the limitations of its working environment, it is difficult to realize the recovery of vibration energy and real-time adjustment of shock absorber performance, and it cannot adapt to changes in vehicle conditions and road conditions, thus limiting the improvement of performance. The liquid in the piston of the magneto-rheological shock absorber is a suspension of magnetic soft particles, which uses the change of the magnetic field of the e...

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Problems solved by technology

[0002] Magneto-rheological shock absorber under the action of strong magnetic field makes the chain beam structure formed by magnetic particles between the two pole plates span across the pole plates like a bridge, hindering the normal flow of fluid. The traditional shock absorber is affected by the shock absorber structure Due to the limitations of its working environment, it is difficult to realize the recovery of vibration energy and the real-time adjustment of shock absorber performance, and it cannot adapt to changes in vehicle conditions and road conditions, thus limiting the improvement of performance

The liquid in the piston of the magneto-rheological shock absorber is a suspension of magnetic soft particles, which uses the change of the magnetic field of the electromagnetic coil in the piston rod to control its rheological characteristics, thereby producing a damping force with rapid response and strong controllability. The magnetorheological shock absorber has the characteristics of adjustable damping force and compact structure, but it needs external energy. In addition, the shock absorber dissipates the vibration energy of the vehicle in the form of heat, which does not meet the theme of energy saving

The electrical energy recovered by the vehicle vibration energy recovery system has the characteristics of high voltage and low current, and the current is instantaneous and alternating. Due to the damping effect of the system, there are certain difficulties in the recovery, transformation and storage of vibration energy.

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