Braking device based on magnetostriction material and control method thereof

Abstract

The invention discloses a braking device based on a magnetostriction material and a control method thereof. The braking device uses the novel magnetostriction intelligent material, controls the magnitude of a magnetic field by changing the magnitude of currents in a coil, further controls the expansion and contraction amount of the magnetostriction material, and uses force generated in the expansion and contraction process of the magnetostriction material to replace air pressure or hydraulic pressure as brake driving force. Additionally, the braking device uses an electric circuit to replace an original oil circuit and an original gas circuit in the work process, and improves response speed of a braking system on the premise of simplifying the structure of the braking system.

Description

technical field [0001] The invention belongs to the technical field of automobile mechanical braking, and specifically refers to a braking device based on a magnetostrictive material and a control method thereof. Background technique [0002] Magnetostrictive materials are a class of materials that can convert electromagnetic energy and mechanical energy into each other. When the material is magnetized in a magnetic field, it can expand and contract along the direction of magnetization. If a energized coil is used as the magnetic field source, the size of the magnetostrictive material can be controlled when the current passing through the coil changes or the distance from the magnet changes. Variety. The magnetostrictive material whose size change is much larger than that of ferrite and other magnetostrictive materials, and the energy generated is also large, is called giant magnetostrictive material. The rare earth-iron alloy (RFe2) materials with giant magnetostrictive p...

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a braking device based on magnetostrictive material and its control method, so as to solve the problem of lagging drum brake braking response and energy consumption of the braking system in the prior art. The technical problems of too high, insufficient maximum braking force, and complex arrangement of the braking system; the present invention controls the size of the magnetic field by changing the magnitude of the current in the coil, and further controls the expansion and contraction of the magnetostrictive material. Generated force to replace pneumatic or hydraulic pressure as brake actuation force

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