Self-driving magnetorheological damper

Abstract

The invention relates to a self-driving magnetorheological damper, which is provided with a self-induction device and comprises a cylinder barrel, a piston and an electromagnetic coil, wherein the electromagnetic coil is winded on the outer surface of the piston, a throttling channel is arranged between the inside wall and the outside wall of the cylinder barrel, magnetorheological fluid is filled in the cylinder barrel and yield fluid is filled in the throttling channel; a magnetic shielding body, a powerful magnet and a power rod are arranged in the self-induction device, and an induction coil is arranged in the power rod; and the power rod is fixedly connected with one end of a piston rod penetrating through the piston and moves in a reciprocating way along the piston rod. The damper has the characteristics of active tuning and environment self-adaptation, avoids using external energy and sensor system, is characterized by automatically changing damping property along the environment and has high stability and robust performance.

Description

Technical field [0001] The present invention relates to engineering vibration reduction technology, in particular, to a phase vibration damping damper. Background technique [0002] Fluid damping technology is an excellent vibration reduction control method. It is based on the principle of pore flow. It adjusts the value range of the damping coefficient by adjusting the size of the variable cross-section pores. It has a good vibration reduction and energy consumption effect. The emergence of smart materials represented by magnetorheological fluids has injected new life into the development of damping technology. They combine fluid damping technology with active control strategies, and have gradually played a great role in various fields of vibration reduction. value. [0003] However, the yielding fluid damping devices currently on the market still belong to the category of smart-semi-active control technology. On the one hand, the damper drive needs to be controlled by an externa...

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Problems solved by technology

[0003] However, the yield fluid damping devices currently on the market still belong to the category of intelligent-semi-active control technology. On the one hand, the damper drive needs to be controlled by an external power supply, which has high requirements for the stability of the power supply. On the other hand, the effective performance of the damper largely depends on the decision-making and driving of the external control center, so there are high requirements for the control law and the sensing system. Improper selection and the error of the sensing system will have a greater impact on the performance and quality of the damper

[0004] In addition, the phase difference caused by the time lag problem of the current control system often causes serious damage to the effect of the control system, which undoubtedly constitutes a great obstacle to the development and application of vibration control technology

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