Magneto-rheological damper of inbuilt displacement sensor

Abstract

The invention discloses a magneto-rheological damper of an inbuilt displacement sensor, which is composed of a working cylinder, a piston of which the core is provided with big and small pores, a piston rod, an inbuilt pipe and a displacement sensor, wherein the working cylinder is filled with magneto-rheological fluid; when the piston rod pushes the piston to move in the working cylinder, the inbuilt pipe enters or retracts from the big pore of the piston while the piston rod enters or retracts from the working cylinder; because the external diameter of the piston rod is same with that of the inbuilt pipe, the volume of the working cylinder is constant; the movement of the piston drives a sliding axle of the displacement sensor arranged in the inbuilt pipe to move, so that the displacement sensor arranged in the inbuilt pipe can output the signal of piston real-time displacement amount.

Description

technical field [0001] The invention belongs to a magnetorheological damper, in particular to a magnetorheological damper with a built-in displacement sensor. Background technique [0002] Magneto-rheological damper is an intelligent damping device, its damping force can be adjusted steplessly by adjusting the current entering the electromagnetic coil in the magnetorheological damper; in practical applications, the control of magnetorheological damper When the system adjusts the damping force of the magnetorheological damper, in addition to referring to the moving speed and acceleration of the piston in the magnetorheological damper, it also needs to refer to many factors such as the displacement of the piston in the magnetorheological damper to adjust the magnetic flow. The damping force of the variable damper is adjusted in real time. Therefore, when using an ordinary magnetorheological damper, a displacement sensor is usually installed outside the magnetorheological dampe...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiency that the ordinary magnetorheological damper cannot directly provide the piston displacement signal in the magnetorheological damper to the control system, the present invention proposes a magnetorheological damper with a built-in displacement sensor, and a magnetorheological damper with a built-in displacement sensor The damper is realized by changing one of the piston rods into a tube shape and placing it inside the working cylinder on the basis of the ordinary double-rod magneto-rheological damper, and installing a displacement sensor in the tube; therefore, the magneto-rheological damper with the built-in displacement sensor The rheological damper not only has the adjustable damping force like the ordinary magnetorheological damper, but also provides the control system with the real-time displacement signal of the piston in the magnetorheological damper through the built-in displacement sensor.

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