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

Electromagnetic damping device and method with three-dimensional magnetic field

A technology of electromagnetic damping and three-dimensional magnetic field, applied in the field of dampers and damping, can solve the problems of casualties, shortened life, buoyancy generated by oil, etc., and achieve the effect of ensuring measurement accuracy and good damping effect

Inactive Publication Date: 2014-04-16
NAT INST OF METROLOGY CHINA
View PDF8 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it also has many disadvantages: the oil will generate buoyancy; the oil must be in contact with the suspended object, so it will continue to dialysis upward along the contact rod; when the suspended object sloshes, it will cause oil to adhere to the contact rod and cause quality changes
In high-tech, precision, and cutting-edge technical fields, mechanical vibration will cause structural failure, decreased precision, shortened life, and casualties.
For example, when the rocket is launched, the impact load will cause structural damage and reduce the launch accuracy; when the car is driving, the roughness of the road surface will reduce the comfort; when the instrument is vibrated, the measurement accuracy will be reduced, etc.

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
  • Electromagnetic damping device and method with three-dimensional magnetic field
  • Electromagnetic damping device and method with three-dimensional magnetic field
  • Electromagnetic damping device and method with three-dimensional magnetic field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The technical solutions of the various embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] Fig. 1 series is the three-dimensional magnetic field electromagnetic damping device in the embodiment of the present invention, wherein, Figure 1a It is the three-dimensional structural diagram of the three-dimensional magnetic field electromagnetic damping device of the present invention, Figure 1b is the front view of the three-dimensional magnetic field electromagnetic damping device, Figure 1c It is a top view of the three-dimensional magnetic field electromagnetic da...

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

PropertyMeasurementUnit
Widthaaaaaaaaaa
Login to View More

Abstract

The invention provides an electromagnetic damping device and method with a three-dimensional magnetic field. The electromagnetic damping device comprises a U-shaped iron core, magnetic multipoles and a damping aluminum sheet, wherein the magnetic multipoles are symmetrically clung to the two opposite surfaces of the U-shaped iron core; each surface of the U-shaped iron core is formed by staggered connection of a plurality of permanent magnets N and S; the damping aluminium sheet is positioned in an air gap of the U-shaped iron core and is fixedly connected with a mechanism to be damped. The electromagnetic damping device and method provided by the invention have the advantages that the three-dimensional magnetic field is formed by adopting staggered distribution of the plurality of permanent magnets N and S, so that not only is the requirement on non-uniform magnetic field met, but also the magnetic force of the magnetic field in all directions is large, so that a good damping effect of the damping aluminium sheet moving in all the directions is realized; simultaneously, a non-contact structure and the non-magnetic-permeable damping aluminium sheet guarantee that electromagnetic damping can not generate any additional force, so that the measuring accuracy is guaranteed, and the device and the method can be applied to a precision electromagnetic balance and other fields requiring elimination of mechanical vibration.

Description

technical field [0001] The invention relates to a damper and a damping method, in particular to a non-contact three-dimensional magnetic field electromagnetic damping device and a damping method. Background technique [0002] Mass measurement is one of the basic measurements in physics, and the most commonly used tool for measuring mass in physics experiments is the balance. Precision balances generally use a knife edge to decouple the suspended weight from the balance beam. When the suspended weight sloshes, it will cause mass measurement errors. Therefore, dampers are usually added to the balance to stop the suspended object as soon as possible. The damper of an ordinary balance should make the balance stand still in less than one minute, while the damper of a precision balance should make the balance completely still within 1-2 periods of swing without affecting the measurement of mass. [0003] Generally, the balance adopts air damping. The air damping is composed of an...

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
IPC IPC(8): G01G23/10
Inventor 张钟华李正坤许金鑫李世松鲁云峰韩冰贺青
Owner NAT INST OF METROLOGY CHINA
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