Semi-active suspension based on magnetically controlled shape memory alloy

Abstract

The invention discloses a semi-active suspension based on magnetically controlled shape memory alloy, which comprises an upper connecting ring, a lower connecting ring, a sensor, a controller and a damper shell, wherein an upper iron core and a lower iron core are fixed on the damper shell, first and second magnetically controlled shape memory alloy bars are respectively filled on the upper iron core and the lower iron core, and excitation coils are respectively wound on the upper iron core and the lower iron core; one end of an upper tappet of the damper is connected with the upper connecting ring, the other end of the upper tappet is in contact with the first magnetically controlled shape memory alloy bar, and the other end of the first magnetically controlled shape memory alloy bar is connected with an upper push rod; and one end of a lower tappet of the damper is connected with the lower connecting ring, the other end of the lower tappet is in contact with the second magnetically controlled shape memory alloy bar, and the other end of the second magnetically controlled shape memory alloy bar is connected with a lower push rod. The semi-active suspension disclosed by the invention can improve the smoothness and comfort of a vehicle, damp vibration, adjust the vehicle body height and turning posture, as well as eliminate the hidden danger of leakage of hydraulic oil of a traditional double-drum hydraulic damper.

Description

technical field [0001] The invention relates to a suspension mechanism of a vehicle, in particular to a shock absorber based on a magnetically controlled shape memory alloy. Background technique [0002] Suspension is the general term for all force transmission connection devices between the frame and the wheels. Its main function is to transmit force and torque, buffer the impact force generated by the road surface, and reduce the vibration caused by it, so as to ensure that the car can run smoothly. . At present, the passive suspension is still widely used in vehicles, its stiffness and damping are not adjustable, and it is only suitable for a single road condition. [0003] With the development of the automobile industry, people have proposed semi-active suspension and active suspension with better performance. Although both active suspension and semi-active suspension can optimize vehicle ride comfort according to different road surfaces, the active suspension controll...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to design a semi-active suspension based on magnetically controlled shape memory alloys, which can improve the ride comfort and comfort of the vehicle, dampen vibrations, and at the same time adjust the vehicle body height and cornering posture, and eliminate the Hidden dangers of hydraulic oil leakage in traditional double-barrel hydraulic shock absorbers

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