Magnetic current changeing dumper of integrated related speed sensing function and method of adaptive damping

Abstract

A self-adapting vibration reduction method and a magnetic rheology damper which has integration relative velocity conversion function. The damper is made up of cylinder body, magnetic rheology liquid, exciting coil on the piston head, induction coil in the piston rod, accumulator, and dirt shroud, and so on; the exciting coil and the induction coil are constituted a active magnetoelectricity type relative velocity transducer, it integrates the magnetic rheology damper structure to a unit. Its vibration reduction method is that exciting coil is loaded a medium-low frequency voltage sign as the transducer's exciting coil detection signal, common frequency alternating magnetic field which is produced by the method is formed to a closure work magnetic loop in the damper structure; axial direction relative motion between the piston of magnetic rheology damper and cylinder body make magnetic linkage of the induction coil occur to correspond change and induced obtain conversion output signal which reflects the axial direction relative motion; according to the conversion signal, controller self-adapting adjusts the drive current which is overlap on the exciting coil by current drive to control the magnetic field strength of the exciting coil to realize the self-adapting vibration reduction of the magnetic rheology.

Description

technical field [0001] The invention relates to a magneto-rheological damping device, in particular to a magneto-rheological damper integrated with a relative speed sensing function and a corresponding self-adaptive damping method. Background technique [0002] Vibration is a common physical phenomenon. With the continuous progress of human society and the continuous development of science and technology, vibration problems in the fields of transportation, national defense, machining, building structures, and scientific research have attracted increasing attention. For a long time, in order to effectively overcome and avoid various unfavorable vibrations, passive, active and semi-active vibration control systems have been proposed successively. In recent years, due to the successive appearance of magnetorheological fluids and magnetorheological dampers (abbreviated as MR dampers) and their continuous improvement in performance, semi-active vibration reduction systems based o...

AI Technical Summary

Problems solved by technology

No matter which sensing method is used, the separately configured sensors not only increase the cost and structural complexity of the entire vibration control system, but also the sensors directly exposed to the external environment are easily affected by the external environment (such as mechanical collision, water seepage, oil seepage, etc.). Electromagnetic waves, etc.) interference or even damage, thus affecting the overall reliability and stability of the vibration control system, shortening the service life of the system

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