A high-efficiency rotational speed control device based on magnetorheological materials

Abstract

The invention discloses a magnetorheological material-based high-efficiency rotating speed control device, and belongs to the field of rotating speed control of Fuze turbine generators. The magnetorheological material-based high-efficiency rotating speed control device comprises an upper cover, an inner cylinder, a housing, a bottom, excitation coils, magnetic cores and a magnetorheological material, wherein the upper cover, the inner cylinder, the housing and the bottom form a substrate; a peripheral device comprises a turbine generator; the excitation coils are arranged between the inner cylinder and the housing and are vertical to a rotating shaft of the generator, so that the magnetic particle chaining direction in the magnetorheological material is vertical to the rotating shaft of the generator; magnetic core positioning slots are formed in the inner side of the housing and the outer side of the inner cylinder separately, circular grooves are adopted by the positioning slots andthe connection line of circle centers of each pair of positioning slots horizontally passes through the axis of the rotating shaft; and the diameters of the magnetic cores are matched with those of the corresponding grooves and the magnetic cores pass through the inside of the corresponding excitation coils through the matched positioning slots. According to the magnetorheological material-based high-efficiency rotating speed control device, improvement of the energy conversion efficiency of the magnetorheological material is achieved by combining the magnetic characteristics of the magnetorheological material.

Description

technical field [0001] The invention belongs to the field of speed control of fuze turbine generators, in particular to a high-efficiency speed control device based on magnetorheological materials, and in particular to a speed control device for improving the energy conversion efficiency of magnetorheological materials. Background technique [0002] From the perspective of modern warfare, weapon systems are developing towards precision guidance, so the fuze power supply of precision-guided bombs must not only provide electrical energy for the control circuit, but also provide electrical energy for correcting the bomb's flight direction and flight attitude. The turbine generator is a power source that uses ballistic air pressure as the driving force. The main part includes a turbine, a rotating shaft, a rotor and a stator. Because of its high power density, small axial size, and good power generation performance, it has a good application prospect in the field of fuze power s...

AI Technical Summary

Problems solved by technology

When the generator runs at high speed, it may damage key parts (bearings, magnetic rotors), high-speed operation brings a large output voltage, and may also cause breakdown or burnout of electronic components in the load line

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