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

Electromagnetic force control method of a disk type negative stiffness electromagnetic actuator

Technology of an actuator and control method

Active Publication Date: 2021-11-09
HARBIN ENG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the structures used to achieve negative stiffness are mainly divided into: mechanical spring type, magnet type, rubber type and electromagnet type. The force of the negative stiffness structure shows obvious nonlinear changes with displacement near the working point. The nature of the system makes it possible that there may be multiple attractors in the quasi-zero stiffness system, causing multi-stable phenomena, resulting in complex dynamic behaviors such as jumping of the vibration isolator as a whole during operation. Sub-migration to achieve vibration reduction and noise reduction, the control system and strategy will be quite complex

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 force control method of a disk type negative stiffness electromagnetic actuator
  • Electromagnetic force control method of a disk type negative stiffness electromagnetic actuator
  • Electromagnetic force control method of a disk type negative stiffness electromagnetic actuator

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0109] according to Figure 1 to Figure 7 As shown, the present invention provides a method for controlling electromagnetic force of a disk-type negative stiffness electromagnetic actuator, a method for controlling electromagnetic force of a disk-type negative stiffness electromagnetic actuator, comprising the following steps:

[0110] Step 1: According to the static bearing capacity, select the mechanical spring that provides the positive stiffness of the vibration isolation system, and determine the positive stiffness of the spring;

[0111] Step 2: Establish the electromagnetic force model under magnetic unsaturation, and determine the electromagnetic attraction force of the electromagnet;

[0112] The step 2 is specifically:

[0113] Establish the electromagnetic force model under magnetic unsaturation, determine the electromagnetic attraction force of the electromagnet, and express the electromagnetic attraction force of the electromagnet by the following formula:

[01...

specific Embodiment 2

[0200] An electromagnetic force control method of a disk type negative stiffness electromagnetic actuator, comprising the following steps:

[0201] S1. According to the actual required static bearing capacity, reasonably select the mechanical spring that provides the positive stiffness of the vibration isolation system, and determine its positive stiffness as k.

[0202] S2. Establish as image 3 The single electromagnet magnetic circuit model shown, establishes the electromagnetic force mathematical model under the condition of magnetic unsaturation, as shown in formulas (1-1) to (1-13).

[0203]

[0204]

[0205]

[0206]

[0207]

[0208]

[0209]

[0210]

[0211]

[0212]

[0213]

[0214] R total1 = R gap11 +R gap21 +R arm +R iron (1-12)

[0215]

[0216] In the formula: F mag1 is the electromagnetic attraction force of electromagnet 1, Φ 1 is the magnetic flux of electromagnet 1, μ 0 is the vacuum permittivity, μ 1 is the ma...

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 relates to an electromagnetic force control method of a disk type negative stiffness electromagnetic actuator. The invention relates to the technical field of vibration control. According to the actual required static load capacity, the invention determines the positive stiffness k of the mechanical spring required by the disk-type quasi-zero stiffness vibration isolator; establishes a mathematical model of the electromagnetic force of a single electromagnet under the condition of unsaturated magnetism ; The present invention is aimed at the disk-type quasi-zero stiffness vibration isolator, using the coil current as the input control quantity, so that the electromagnetic force and the displacement of the negative stiffness electromagnetic actuator have a linear relationship, changing the nonlinear nature of the vibration isolation system, and avoiding the The multi-stable phenomenon caused by the nonlinear electromagnetic force eliminates complex dynamic behaviors such as jumping of the vibration isolator when it is working; it does not require complex sensors and control systems, and the implementation method is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of vibration control, and relates to an electromagnetic force control method of a disk type negative stiffness electromagnetic actuator. Background technique [0002] As an important technical means of vibration reduction and noise reduction, vibration isolation technology aims to take certain measures between the vibration source and the system, and install appropriate vibration suppression or vibration isolation equipment to isolate the direct transmission of vibration. Traditional passive vibration isolators can theoretically only be used for excitation frequencies greater than Therefore, in the field of low-frequency vibration isolation, quasi-zero stiffness vibration isolation technology has received more and more attention in recent years. [0003] Quasi-zero stiffness vibration isolators are mostly composed of positive and negative stiffness structures connected in parallel, which can reduce the ove...

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): G06F30/17G06F30/20
CPCG06F30/17G06F30/20F16F15/002F16F15/03F16F2222/06F16F2228/001F16F2228/063F16F2230/18
Inventor 靳国永袁俊杰叶天贵刘志刚
Owner HARBIN ENG UNIV
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