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Linear oscillation motor

An oscillating motor and linear technology, applied in the electromagnetic field, can solve problems such as hydraulic pump friction and leakage, complex redundancy configuration, and dynamic performance degradation, and achieve the effects of reducing magnetic flux leakage, reducing mass, and improving dynamic performance

Active Publication Date: 2015-03-04
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are inevitably the following problems in the whole system: hydraulic pump friction and leakage are serious; dynamic problems caused by the large inertia of the motor pump group; redundant configuration is complicated and fault tolerance is poor
The biggest problem brought about by increasing the frequency of movement is the decline in dynamic performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention relates to a linear oscillating motor, see figure 1 , which includes an outer layer stator, an inner layer mover, and a hollow winding slot on the outer layer stator, wherein the outer layer stator is a hollow structure, and the inner layer mover is sleeved in the hollow structure, and the above-mentioned hollow winding slot is along the outer layer stator The extension direction of the axis is arranged. There are multiple hollow winding slots. Each hollow winding slot is an independent ring structure. They are formed around the axis of the outer stator. Each independent hollow winding slot has a A coil winding is wound. Of course, if the coil winding is formed by winding multiple turns of wire, the winding direction of the wire in at least one hollow winding slot is the same direction. The above-mentioned hollow winding slots provide space for the coil windings to be wound, and can fix or position the coil windings.

[0019] The above-mentioned ...

Embodiment approach

[0037] There may be six magnetic conductive blocks, and the six magnetic conductive blocks are arranged along the circumference and welded and fixed in the outer casing of the stator, and the winding slots on both sides of the magnetic conductive blocks are used to place the coil windings. For the convenience of understanding, such six magnetic conductive blocks are called magnetic conductive units. As shown in the figure, nine magnetic conductive units can be placed coaxially and compressed with interference fit to form the entire outer stator. Such nine magnetic conduction units can form eight hollow winding slots.

[0038] Of course, when the magnetic permeable block is a complete ring, several (complete) magnetic permeable blocks can also be coaxially placed and compressed with interference fit to form the entire outer layer stator. The stator outer casing can also be formed by splicing multiple pieces together.

[0039] In an optional embodiment, the linear oscillating m...

Embodiment 2

[0044] Compared with Example 1, the difference is that, in the way of setting the inner ring layer and the outer ring layer, the inner layer spacer magnet and the outer layer spacer magnet have an integrated structure, such as image 3 As shown, that is, they can be the same magnet. In this way, it is more convenient and quicker during manufacture. Other respects are all identical with embodiment 1.

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Abstract

The invention relates to a linear oscillation motor which comprises an outer layer stator and an inner layer rotor. The outer layer stator is of a hollow structure, and the inner layer rotor is sleeved in the hollow structure of the outer layer stator. A plurality of hollowing winding grooves formed surrounding the axis are arranged in the extending direction of the outer layer stator, and a coil winding winds on each winding groove. The inner layer rotor comprises an inner cylinder and a permanent magnet fixedly arranged on the outer wall of the inner cylinder. The permanent magnet is divided into an inner ring layer close to the inner cylinder and an outer ring layer sleeved outside the inner ring layer. The magnetizing direction of the outer ring layer is a Halbach array. The magnetizing direction of the inner ring layer is parallel to the axial direction of the inner cylinder. Therefore, the linear oscillation motor can enhance the magnetic induction intensity, reduce leakage fluxes and improve the axial output force of the motor. In addition, the Halbach array has the characteristic of self shielding, the inner cylinder of the rotor can be formed by processing light, high intensity non-magnetic materials, and therefore the mass of the rotor is greatly reduced and the dynamic performance of the motor is improved.

Description

technical field [0001] The invention relates to the field of electromagnetic technology, in particular to a linear oscillating motor. Background technique [0002] With the development of aircraft technology, more electric aircraft has become a research hotspot and a future development direction. Compared with the traditional power hydraulic transmission system, the multi-electric aircraft adopts the power transmission system, which avoids the problems of heavy weight, low reliability and poor maintainability caused by long hydraulic pipelines, and can effectively improve the power-to-weight ratio and reliability of the aircraft . [0003] At present, commonly used actuators in power transmission systems include: EMA (Electro-mechanical Actuator) using traditional mechanical methods and rotary electro-hydrostatic actuators (EHA) (Electro-hydrostatic Actuator) using hydraulic transmission. EMA usually consists of a rotary motor, a reducer, a rotary-to-linear motion conversi...

Claims

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Application Information

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IPC IPC(8): H02K41/02
Inventor 焦宗夏王天乙严亮尚耀星
Owner BEIHANG UNIV
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