Ultrasonic field and magenetic field coupled rotary type barrel magnetorheological fluid damper

Abstract

The invention relates to an ultrasonic field and magnetic field coupled rotary type barrel magnetorheological fluid damper. The ultrasonic field and magenetic field coupled rotary type barrel magnetorheological fluid damper is characterized in that rectangle piezoelectric ceramic piece is pasted to the outer circle of a barrel type stator, electrification is carried out for vibrational excitation for obtaining the stator B(0,n) vibration mode, and an ultrasonic field is applied to magnetorheological fluid in a shearing cavity. The damper magnetorheological fluid works in the barrel type shearing mode, and large and reliable retarding torque can be generated on a rotation inputting rotating shaft. Under the zero magnetic field working mode, the ultrasonic field is applied to the magnetorheological fluid, and influences of magnetorheological fluid zero field damping on the rotating shaft can be reduced; and under the non-zero-field working mode, different excitation signals are controlled, ultrasonic fields and magnetic fields with different strengths can be generated, and therefore the magnetorheological fluid damping is accurately regulated, and the rotating shaft rotating speed and any angle can be accurately controlled. The ultrasonic field and magnetic field coupled rotary type barrel magnetorheological fluid damper is simple and compact, high in action response, wide in damping adjusting scope and premise in damping adjusting.

Description

technical field [0001] The present invention relates to the technology of manipulating and arranging microscopic particles in the ultrasonic near field and the application technology of magnetorheological fluid smart materials, in particular to the application technology of magnetic particles and rheological phenomena in magnetorheological fluid based on the coupling of ultrasonic near field and magnetic field and the application technology of magnetorheological fluid. Rheological fluid viscosity fine-tuning technology. Background technique [0002] Magnetorheological fluid is a new type of smart material with controllable rheological properties. It has excellent characteristics such as fast response (milliseconds), continuously adjustable damping, and low energy consumption. It has been widely used in the field of vibration control, but it is limited to magnetic The rheological fluid has adjustable damping characteristics under a single magnetic field to make various damper...

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Problems solved by technology

[0002] Magnetorheological fluid is a new type of smart material with controllable rheological properties. It has excellent characteristics such as fast response (milliseconds), continuously adjustable damping, and low energy consumption. It has been widely used in the field of vibration control, but it is limited to magnetic Various dampers made of rheological fluid with adjustable damping characteristics under a single magnetic field

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