Suspension force control device of energy-saving type permanent magnetic suspension system
A control device, a technology of magnetic levitation, applied in the direction of holding devices and electrical components using magnetic attraction or thrust, which can solve the problems of limitations, the inability of the permanent magnet levitation system to flexibly change the polarity of the magnetic pole of the system, and the inability to actively return to the levitation state, etc. Application conditions and range, effect of small magnetoresistance coefficient and simple structure
Inactive Publication Date: 2012-11-28
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology
However, the permanent magnetic suspension system cannot realize the process of floating from the adsorption position to the suspension position. Once the suspension system is accidentally adsorbed, it becomes an uncontrollable system and cannot actively return to the suspension state.
The reason is that the permanent magnetic levitation system cannot achieve a small enough levitation force to make the system return to the levitation state by gravity, that is, the zero levitation force function
In addition, the permanent magnetic levitation system cannot flexibly change the magnetic polarity of the system, which limits its application as a combined drive in magnetic levitation bearings and multi-degree-of-freedom magnetic levitation systems
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[0022] detailed description: The present invention will be further described below in conjunction with accompanying drawing:
[0023] Such as figure 1 As shown, the present invention provides a levitation force control device of an energy-saving permanent maglev system. The iron yoke of soft magnetic material and the suspension 4; the iron yoke is divided into left soft magnetic material iron yoke 2 and right soft magnetic material iron yoke 3;
[0024] The arc openings of the two "F"-shaped iron yokes are symmetrically arranged inwardly, and the disc permanent magnet 1 is arranged at the center of the arc openings between the two iron yokes and an air gap is reserved between the iron yokes; suspended matter 4 is suspended below two "F" shaped iron yokes.
[0025] The disc-shaped permanent magnet 1 can rotate around the arc centers of the two iron yokes driven by the rotary motor. The levitation force between the iron yoke and the suspension is controlled by the rota...
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The invention provides a suspension force control device of an energy-saving type permanent magnetic suspension system. The suspension force control device is characterized in that the device comprises a radially magnetized disk type permanent magnet, a revolution motor which is arranged on the back of the permanent magnet and is used for driving the permanent magnet to rotate, two F-shaped iron yokes made of soft magnetic materials and a suspended material, wherein circular arc openings of the two F-shaped iron yokes are inward arranged symmetrically and oppositely, the disk type permanent magnet is arranged at the center position of the circular arc openings between the two iron yokes, and air gaps are reserved between the disk type permanent magnet and the iron yokes; and the suspended material is suspended below the two F-shaped iron yokes. The suspension force control device of the energy-saving type permanent magnetic suspension system provided by the invention can generate zero suspension force in a permanent magnetic suspension system, realizes the energy-saving suspension of resuspension material under small driving force, and can change the magnet pole polarity of the whole suspension device. The suspension force control device provided by the invention effectively makes up the shortcoming of the existing magnetic suspension system, and expands the application condition and range of the permanent magnetic suspension system.
Description
technical field [0001] The invention belongs to the technical field of permanent magnetic levitation, and in particular relates to a levitation force control device of an energy-saving permanent magnetic levitation system composed of a disc-shaped permanent magnet and a pair of iron yokes. Background technique [0002] Magnetic levitation technology has been widely used in various fields of society. Most of the maglev systems used are electromagnetic levitation systems with electromagnetic coils as the source of magnetic force. However, in the electromagnetic levitation system, the size of the electromagnetic coil is limited by the energy-product ratio, so it is difficult to realize the design and application of miniature or small devices. In addition, except for a small part of the energy loss of the electromagnetic levitation system to generate effective magnetic force, most of the energy is consumed in heat generation. The generation of a large amount of heat makes the ...
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IPC IPC(8): H02N15/00
Inventor 孙凤岡宏一
Owner SHENYANG POLYTECHNIC UNIV