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Polar pitch variable rectilinear vortex brake and controlling method thereof

A linear eddy current braking, variable technology, applied in the control of electromechanical brakes, asynchronous inductive clutches/brakes, control systems, etc., to achieve the effects of high reliability, simple device structure, and improved system testing accuracy

Inactive Publication Date: 2013-07-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the main problems existing in various linear motor loading test devices at present, the present invention proposes a pole-pitch variable linear eddy current brake and its control method suitable for loading in a linear motor characteristic testing system

Method used

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  • Polar pitch variable rectilinear vortex brake and controlling method thereof
  • Polar pitch variable rectilinear vortex brake and controlling method thereof
  • Polar pitch variable rectilinear vortex brake and controlling method thereof

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specific Embodiment approach 1

[0039] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 1. A variable pole pitch linear eddy current brake described in this embodiment includes a primary and a secondary, and an air gap exists between the primary and the secondary; the primary includes a primary fixed plate 21 and a primary iron core 22 and field windings;

[0040] The primary iron core is fixed on the primary fixing plate; the surface of the primary iron core facing the air gap side has a tooth groove structure, and the even number of armature teeth 23 are arranged along the relative movement direction of the primary and secondary, and each armature tooth is wound with One coil; the coils on the (4n-3)th armature tooth and the (4n-2)th armature tooth are reversely connected in series to form the first excitation winding 1; the (4n-1)th armature tooth and the (4n-1)th armature tooth and The coils on the (4n)th armature tooth are reversely connected in series to form the second excitation winding 2, where n is...

specific Embodiment approach 2

[0043]Specific Embodiment 2. The difference between this embodiment and the variable pitch linear eddy current brake described in Embodiment 1 is that the (4n-3)th armature tooth and the (4n-2th) armature tooth of the armature core ) A permanent magnet 20 is embedded in the yoke between two armature teeth, and the magnetization direction of the permanent magnet 20 is parallel to the relative movement direction of the primary and secondary.

[0044] see image 3 Describe the specific structure of a pole-pitch variable linear eddy-current brake described in this embodiment: the structure is based on the structure of the pole-pitch variable linear eddy-current brake described in the first specific embodiment. The yoke between the 1st armature tooth and the 2nd armature tooth is grooved along the transverse direction, and the permanent magnet 20 is embedded in the slot, and the yoke between the 5th armature tooth and the 6th armature tooth is Grooving horizontally, embedding perm...

specific Embodiment approach 3

[0045] Specific Embodiment 3. The difference between this embodiment and the variable pitch linear eddy current brake described in Embodiment 1 is that the (4n-3)th armature tooth and the (4n-2th) armature tooth of the armature core ) A plate-shaped permanent magnet 30 is respectively fixed on the air gap surface of each armature tooth, the magnetization direction of the permanent magnet 30 is perpendicular to the relative movement direction of the primary and secondary, and the magnetization of two adjacent permanent magnets in the opposite direction.

[0046] see Figure 4 Describe the specific structure of a pole-pitch variable linear eddy-current brake described in this embodiment: the structure is based on the structure of the pole-pitch variable linear eddy-current brake described in the first specific embodiment. One armature tooth, the second armature tooth, the fifth armature tooth, the sixth armature tooth, the ninth armature tooth, and the tenth armature tooth are ...

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Abstract

The invention discloses a polar pitch variable rectilinear vortex brake and a controlling method thereof, which relate to the technical field of rectilinear vortex brakes and control thereof, and belong to the field of motors. The rectilinear vortex brake is characterized in that each armature tooth of a primary iron core is wound with a coil; the coils on the (4n-3)th armature tooth and the (4n-2)th armature tooth are sequentially and reversely connected in series to form a first exciting winding; and the coils on the (4n-1)th armature tooth and the (4n)th armature tooth are sequentially and reversely connected in series to form a second exciting winding. According to the polar pitch variable controlling method for the polar pitch variable rectilinear vortex brake, the first exciting winding is positively connected in series with the second exciting winding through a control switch, so that the polar pitch variable rectilinear vortex brake works in a short polar pitch state; and the first exciting winding is reversely connected in series with the second exciting winding through the control switch, so that the polar pitch variable rectilinear vortex brake works in a long polar pitch state. The brake and the method are applied to the technical field of loading of rectilinear motor property test systems.

Description

technical field [0001] The invention relates to the technical field of a linear eddy current brake and its control, and belongs to the field of motors. Background technique [0002] In the field of modern processing industry, many occasions such as laser cutting, high-speed grinding machines, precision lathes, machining centers, etc. require high-speed and high-precision linear motion, while traditional methods can only be obtained by means of intermediate links such as rotating motors and ball screws. Linear motion, which inevitably has disadvantages such as large inertia, large friction, and backlash. In recent years, with the advancement of linear motor technology, more and more occasions have begun to directly apply it to obtain linear motion. Due to the direct drive technology, the linear motor has the advantages of fast speed, high acceleration, high positioning accuracy, long stroke and fast dynamic response, which just meet the requirements of high-speed precision m...

Claims

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Application Information

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IPC IPC(8): H02K49/04H02P15/00
Inventor 寇宝泉金银锡杨俊白相林
Owner HARBIN INST OF TECH
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