Radial no-coupling three-degree-of-freedom direct-current hybrid magnetic bearing
A technology of hybrid magnetic bearings and degrees of freedom, which is applied in the directions of magnetic bearings, bearings, shafts and bearings, can solve problems such as complex control, and achieve the effect of simple control
Active Publication Date: 2020-05-19
HUAIYIN INSTITUTE OF TECHNOLOGY
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Problems solved by technology
The structure of the hybrid magnetic bearing radial two-degree-of-freedom levitation is realized in a single piece, resulting in the coupling of the levitation force in the XY direction, and the control is complicated
Method used
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[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0020] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.
[0021] In addition, the terms "first" and "second" are used for desc...
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The invention discloses a radial no-coupling three-degree-of-freedom direct-current hybrid magnetic bearing. The radial no-coupling three-degree-of-freedom direct-current hybrid magnetic bearing comprises a radial stator, an axial stator and a rotor, wherein the rotor is located on a stator inner ring; the radial stator is composed of a left radial iron core and a right radial iron core; two suspension teeth are uniformly distributed along the inner circumferences of the left radial iron core and the right radial iron core correspondingly; left and right radial magnetized permanent magnet rings are correspondingly arranged on the outer sides of the left and right stator iron cores; centralized radial control windings are wound around the suspension teeth; the axial stator is composed of aleft axial iron core and a right axial iron core; axial control windings which are connected in series are arranged on the positions, close to the inner side of the axial stator, of the two sides of the left radial iron core and the right radial iron core; and the rotor comprises a cylindrical rotor iron core and a rotating shaft. According to the radial no-coupling three-degree-of-freedom direct-current hybrid magnetic bearing, static bias magnetic flux is provided under the action of the permanent magnet rings, and radial control magnetic flux generated by electrifying the radial control windings adjusts corresponding bias magnetic flux; and the hybrid magnetic bearing with the structure is independently designed in suspension in the X direction and the Y direction, so that no coupling of suspension force in the X-Y direction is realized, and control is simple.
Description
technical field [0001] The invention relates to a non-mechanical contact magnetic bearing, in particular to a radial non-coupling three-degree-of-freedom DC hybrid magnetic bearing, which can be used as a non-contact suspension support for high-speed transmission components such as flywheel systems, machine tool electric spindles, and centrifuges. Background technique [0002] The magnetic bearing is a new type of high-performance bearing that uses the electromagnetic force between the stator and the rotor to suspend the rotor in space, so that there is no mechanical contact between the stator and the rotor. At present, magnetic bearings are divided into the following three types according to the way the magnetic force is provided: (1) Active magnetic bearings, the bias magnetic field is generated by the bias current, and the control flux generated by the control current and the bias flux are superimposed on each other, thereby generating a controllable The levitation force ...
Claims
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IPC IPC(8): F16C32/04
CPCF16C32/0485F16C32/0465F16C32/047
Inventor 朱为国乐倩云王紫欣张涛叶小婷鲁庆莫丽红武莎莎
Owner HUAIYIN INSTITUTE OF TECHNOLOGY