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Rigidity-adjustable semi-active control type torsional damper for vehicle

A semi-active control, torsional damper technology, applied in the direction of shock absorber, spring/shock absorber, vibration suppression adjustment, etc., can solve the problem of low stiffness, limited vibration frequency band of passive torsional damper, and difficult vibration damping effect There are problems such as further improvement to achieve the effect of solving contradictions and benefiting safety and comfort

Active Publication Date: 2015-08-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The torsional shock absorber commonly used in vehicles now belongs to the passive type, because the elastic element of the passive torsional shock absorber is responsible for the dual functions of torque transmission and vibration reduction, that is, it is necessary to ensure the average torque of the engine, and to make the stiffness as small as possible to achieve Good vibration damping effect is limited by the vibration damping mechanism and space size, and it is difficult to break through the contradiction between the stiffness of the elastic element and the load-carrying capacity, which makes the passive torsional damper's vibration damping frequency band limited, and it is difficult to further improve the vibration damping effect. Especially in terms of idling vibration reduction and high-speed vibration reduction in the transmission system

Method used

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  • Rigidity-adjustable semi-active control type torsional damper for vehicle
  • Rigidity-adjustable semi-active control type torsional damper for vehicle
  • Rigidity-adjustable semi-active control type torsional damper for vehicle

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Embodiment

[0033] Such as Figure 6 As shown: the force transmitted to the force transmission cylinder 10 is provided by two magnets, wherein the magnet located below is fixed on the slider 9 and can move up and down with the movement of the force transmission cylinder 10. When the force transmission cylinder 10 moves up and down, the two The distance of the magnet changes accordingly, and the magnitude of the force also changes; at the same time, this part of the magnet can also be replaced with an electromagnet, and the interaction force between the electromagnets is controlled by the controller 13 to control the current, and the negative stiffness structure is adjusted The size of the force makes the stiffness of the mechanism with positive and negative stiffness in parallel be in a state of quasi-zero stiffness, realizing broadband vibration reduction.

[0034] work process:

[0035] When the shock absorber is not working, the dome gear teeth 11 at the negative stiffness structure pos...

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Abstract

The invention discloses a rigidity-adjustable semi-active control type torsional damper for vehicles. The rigidity-adjustable semi-active control type torsional damper for the vehicles comprises a driving shaft, a driven shaft, a negative stiffness structure, a positive stiffness structure, a damping fin, a displacement sensor, a controller and a power supply. The power supply is connected with the controller, and the controller is respectively connected with the negative stiffness structure, the positive stiffness structure and the displacement sensor. The positive stiffness structure is arranged at the bottom inside the driven shaft and covers the outer portion of the end of the driving shaft, the damping fin is arranged between the positive stiffness structure and the driven shaft, the negative stiffness structure sleeves the outer portion of the driving shaft and is connected between an outer circle of the driving shaft and an inner wall of the driven shaft, and the displacement sensor is arranged on the outer circle of the driving shaft. Compared with the prior art, the rigidity-adjustable semi-active control type torsional damper for the vehicles can guarantee the transmission of required torque and can reduce torsional vibration of a wide band, the problem of contradiction of a traditional torsional damper between torque transmission and vibration reduction is solved, and the rigidity-adjustable semi-active control type torsional damper for the vehicles is favorable for vehicle running safety and comfort.

Description

technical field [0001] The invention relates to a shafting torsional vibration damping mechanism, in particular to an adjustable stiffness semi-active control type vehicle torsional vibration damper. Background technique [0002] The phenomenon of torsional vibration in the vehicle power transmission system is ubiquitous, and torsional vibration will cause fatigue damage to shaft parts, reduce service life, and affect driving safety and comfort. In recent years, with the continuous improvement of vehicle operating speed and people's improvement of vehicle operating standards, the vibration of shaft components has attracted more and more attention from enterprises and scientific research units. [0003] The torsional shock absorber commonly used in vehicles now belongs to the passive type, because the elastic element of the passive torsional shock absorber is responsible for the dual functions of torque transmission and vibration reduction, that is, it is necessary to ensure ...

Claims

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Application Information

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IPC IPC(8): F16F15/124F16F15/22
CPCF16F15/124F16F15/22F16F2222/08
Inventor 刘辉王晓杰韩立金马越
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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