Anti-overshock method of anti-shock magneto-rheological buffer

Abstract

Provided is a method for resisting over shock for a shock resistant magnetorheological shock absorber. The shock resistant magnetorheological shock absorber is adopted to control over shock in equipment under a high strength shock environment, the shock resistant magnetorheological shock absorber comprises a piston rod and a cylinder barrel, a sealing end seat and a sealing end cover are arranged at the two ends of the cylinder barrel, a closed cavity is formed and is filled with magnetorheological fluid, a piston damping ring is arranged on an opening of the cavity of the piston rod, the piston damping ring is in clearance fit with the cylinder barrel, the closed cavity of the cylinder barrel is separated into two independent cavities, a damping rod extending in the axial direction is fixedly connected with the sealing end seat, a pole toothed ring is arranged on the inner side of the piston damping ring, the pole toothed ring and the outer circumferential surface of the damping rod form a magnetorheological clearance, the damping rod is provided with an initial section coil assembly, a top speed section coil assembly and an attenuation section coil assembly in sequence in the axial direction, and outgoing lines of all the coil assemblies are electrically connected with a power system. The method for resisting over shock for the shock resistant magnetorheological shock absorber is quite suitable for shock occasions needing quick response.

Description

technical field [0001] The invention relates to the field of buffers, in particular to an anti-overshock method for an anti-shock magneto-rheological buffer. Background technique [0002] The buffer is a mechanical device widely used in various industrial fields, especially in high-strength impact environments such as high-precision electronic equipment, aerospace, and weapon systems, to reduce the impact on the structure and suppress Structural resonance. The buffer is very important to ensure the stability and reliability of the system. [0003] The magnetorheological buffer is a new type of semi-active controllable buffer with magnetorheological fluid as the working medium. Magnetorheological fluid is a smart material in which ferromagnetic particles are uniformly suspended in a carrier fluid. Magnetorheological fluids can undergo rapid changes in rheological properties (viscosity, yield stress) under the action of a magnetic field, and this change is reversible. The ...

AI Technical Summary

Problems solved by technology

[0004] Due to various limitations, ordinary hydraulic buffers have excessive peak impact force, no platform effect, and belong to passive buffers

However, the traditional magneto-rheological buffer uses the acceleration sensor as the feedback signal as the closed-loop control link, and applies instantaneous current to the single coil to establish the magnetic field form. Due to factors such as the inductance of the coil itself and the response time of the sensor, the magnetic The rheological buffer has problems such as a serious lag in response to time, and cannot well meet the shock occasions that require fast response

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