Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Short primary DC (direct current) linear motor

A linear motor, short primary technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of poor dynamic characteristics of motors, large flux density fluctuations, low air gap flux density, etc., to achieve small thrust fluctuations, flux density The effect of small fluctuation and high air gap magnetic density

Active Publication Date: 2012-12-05
HARBIN INST OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of long magnetic path, low air gap flux density and large flux density fluctuations in traditional DC linear motors, and when a moving secondary is required, the short motor has poor dynamic characteristics due to the large mass of the mover. Primary DC Linear Motor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Short primary DC (direct current) linear motor
  • Short primary DC (direct current) linear motor
  • Short primary DC (direct current) linear motor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Specific implementation mode one: combine figure 2 To illustrate this embodiment, it includes a primary and a secondary; an air gap is left between the primary 1 and the secondary;

[0015] The secondary is composed of a plurality of permanent magnet units of the same structure, an upper magnetic yoke 4 and a lower magnetic yoke 5;

[0016] Each permanent magnet unit is composed of two main permanent magnets 2 and two elongated auxiliary permanent magnets 3;

[0017] The two main permanent magnets 2 are planar permanent magnets magnetized in parallel; one main permanent magnet 2 is fixedly arranged on the lower surface of the upper magnetic yoke 4; the other main permanent magnet 2 is fixedly arranged on the lower surface of the lower magnetic yoke 5 on the upper surface;

[0018] The installation positions of the two main permanent magnets 2 correspond to each other;

[0019] The two strip-shaped auxiliary permanent magnets 3 are respectively installed at the two e...

specific Embodiment approach 2

[0024] Specific implementation mode two: combination image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment is that it also increases a plurality of reinforcing plates 6; the reinforcing plate 6 adopts a magnetic material reinforcing plate; Between adjacent permanent magnet units. Other compositions and connection methods are the same as those in Embodiment 1.

specific Embodiment approach 3

[0025] Specific implementation mode three: combination Figure 4 Illustrate this embodiment, it includes primary and secondary; There is an air gap between the primary 1 and the secondary; The secondary consists of a plurality of permanent magnet units of the same structure, an upper magnetic yoke 4 and a lower magnetic yoke 5 composition;

[0026] Each permanent magnet unit is composed of four main permanent magnets 2, two elongated auxiliary permanent magnets 3 and two block auxiliary permanent magnets 7;

[0027] The four main permanent magnets 2 are planar permanent magnets magnetized in parallel;

[0028] The four main permanent magnets 2 are equally divided into an upper main permanent magnet group and a lower main permanent magnet group; the upper main permanent magnet group is fixedly installed on the lower surface of the upper magnetic yoke 4; the lower main permanent magnet group is fixed Installed on the upper surface of the lower magnetic yoke 5; the installation...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a short primary DC (direct current) linear motor, relating to a DC linear motor, aiming at solving the problems that the traditional DC linear motor is long in magnetic circuit, low in air gap flux density and large in flux density fluctuation, and when a movable secondary level is needed, as the rotor is large in mass, the dynamical property of the motor is bad. An air gapis preserved between a primary level and a secondary level; the secondary level consists of a plurality of permanent-magnet units of the same structure, an upper magnetic yoke and a lower magnetic yoke; the polarities of two adjacent permanent-magnet units are opposite; the plurality of permanent-magnet units are arranged between the upper magnetic yoke and the lower magnetic yoke at intervals along the movement direction; the primary level is an armature winding of a single-phase coil; the primary level is mounted at the hollow cavity of the primary permanent-magnet unit; and the two effective sides of the primary coil are respectively located between two main permanent magnets in the two adjacent permanent-magnet units. The short primary DC linear motor is high in air gap flux density, less in flux density fluctuation and less in thrust fluctuation, and can be widely suitable for various DC linear motor systems.

Description

technical field [0001] The invention relates to a linear motor. Background technique [0002] The DC linear motor based on the principle of Ampere force is more and more used in various linear motion control systems due to its simple structure, small size, small thrust fluctuation, high reliability and high energy conversion efficiency; The characteristics of fast, smooth, no cogging, and no hysteresis response of the DC linear motor make the DC linear motor suitable for use in servo control systems that require high speed, high acceleration, and high thrust response. [0003] In the structure of the traditional DC linear motor, the permanent magnet is flat, magnetized in parallel, and fixed on the underside of the upper yoke plate and the upper side of the lower yoke plate of a “day”-shaped magnetic yoke. The upper and lower yoke plates The magnetization direction of the upper permanent magnet is opposite, and the square cylindrical coil is sleeved on the central yoke of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/035H02K1/27
Inventor 寇宝泉张赫张鲁
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com