Electromagnetic piston and magnetorheological damper

Abstract

The invention provides an electromagnetic piston and a magnetorheological damper. The electromagnetic piston comprises: an iron core piston body sleeved with a coil on the outer wall; a piston outer sleeve sleeved outside the iron core piston body, and having a gap as a damping channel with the outer wall of the iron core piston body; and a magnetic circuit reversing ring set comprising a first magnetic circuit reversing ring and a second magnetic circuit reversing ring, wherein the first magnetic circuit reversing ring is sleeved on the outer wall of the coil; and the second magnetic circuitreversing ring is sleeved on the inner wall of the piston outer sleeve and located at the corresponding position of the first magnetic circuit reversing ring. The problem that a traditional magnetorheological damper is small in output damping force range is solved; the output damping force range of the damper is enlarged; the response speed is increased; the failure protection function is added; and the functionality and safety of a semi-active suspension control system using the magnetorheological damper are greatly improved.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, relates to a semi-active suspension control system, in particular to an electromagnetic piston and a magneto-rheological shock absorber. Background technique [0002] The magnetorheological shock absorber is a new type of actuator with adjustable damping force. Its working fluid is magnetorheological fluid. When the piston moves relative to the cylinder, it will squeeze the magnetorheological fluid and make it pass through the piston. The damping channel, so that the magnetorheological fluid will generate shear force. At the same time, the rheological properties of the magnetorheological fluid can be changed under the action of a magnetic field. Under the action of an external magnetic field, the reversible transformation between Newtonian fluid and Bingham fluid can be realized within milliseconds. Therefore, the magnetorheological shock absorber has the characteristics of fast resp...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an electromagnetic piston and a magneto-rheological shock absorber, which solves the problem that the output damping force range of the traditional magnetorheological shock absorber is small, increases the output damping force range of the shock absorber, and makes use of the magneto-rheological shock absorber The functionality and safety of Vibrator's semi-active suspension control system have been greatly improved

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