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

Automobile dynamic vibration absorption system and control method

A technology of dynamic vibration absorption and control method, which is applied in the direction of vibration suppression adjustment, non-rotational vibration suppression, shock absorber, etc., can solve the problems of small vibration damping frequency and range, narrow vibration damping frequency, etc., and achieve reduced amplitude and good The effect of comfort, mass and volume optimization

Inactive Publication Date: 2021-11-05
DONGFENG MOTOR GRP
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention adjusts the stiffness of the shock absorber by changing the effective shear modulus of the elastic body, and then realizes the vibration damping performance, but the frequency that can damp vibration is narrow, and the whole device fully utilizes the controlled system and claw-type expandable The ring realizes the adjustment of vibration, and the frequency and range of vibration reduction of the whole device are very small

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
  • Automobile dynamic vibration absorption system and control method
  • Automobile dynamic vibration absorption system and control method
  • Automobile dynamic vibration absorption system and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1: For the automobile equipped with this vibration-absorbing system, the vibration-absorbing system of this embodiment is fixed on the A component of the automobile, the mass ratio of the selected vibration-absorbing unit and A-component is 0.1, and the natural frequency of the vibration-absorbing unit of this embodiment is determined is 120Hz, and the stiffness is 10000N / mm, according to the stiffness characteristic curve of the spring of the vibration-absorbing system of the present embodiment and Maxwell's electromagnetic force formula, the target current I of the first electromagnetic coil is calculated. 1 is 6.3A, according to the optimal damping ratio formula, the optimal damping ratio and viscous damping coefficient (respectively the optimal damping ratio and viscosity coefficient of the vibration-absorbing unit) can be obtained as 0.167 and 142.9N·S·m -1 , and then based on the characteristic curve of the damping coefficient of the magnetic fluid in th...

Embodiment 2

[0076] Embodiment 2: For the automobile equipped with this vibration-absorbing system, the vibration-absorbing system of this embodiment is fixed on the B component of the automobile, and the mass ratio of the selected vibration-absorbing unit to the B-component is 0.1, and the natural frequency of the vibration-absorbing unit of this embodiment is determined is 40Hz, and the stiffness is 500N / mm, according to the stiffness characteristic curve of the spring of the vibration-absorbing system of the present embodiment and Maxwell's electromagnetic force formula, the target current I of the first electromagnetic coil is calculated. 1 is 4A, according to the optimal damping ratio formula, the optimal damping ratio and viscous damping coefficient (respectively the optimal damping ratio and viscosity coefficient of the vibration-absorbing unit) can be obtained as 0.167 and 98.4N·S·m -1 , and then based on the characteristic curve of the damping coefficient of the magnetic fluid in t...

Embodiment 3

[0078] Embodiment 3: For the automobile equipped with this vibration-absorbing system, the vibration-absorbing system of this embodiment is fixed on the C component of the automobile, and the mass ratio of the selected vibration-absorbing unit to the C-component is 0.1, and the natural frequency of the vibration-absorbing unit of this embodiment is determined is 10Hz, stiffness is 100N / mm, according to the stiffness characteristic curve of the spring of the vibration-absorbing system of the present embodiment and Maxwell's electromagnetic force formula, calculate the target current I of the first electromagnetic coil 1 is 1.5A, according to the optimal damping ratio formula, the optimal damping ratio and viscous damping coefficient (respectively the optimal damping ratio and viscosity coefficient of the vibration-absorbing unit) can be obtained as 0.167 and 95.2N·S·m -1 , and then based on the characteristic curve of the damping coefficient of the magnetic fluid in the damping ...

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 the technical field of automobile vibration absorption structures and control methods, in particular to an automobile dynamic vibration absorption system and a control method. The automobile dynamic vibration absorption system comprises a vibration absorption unit, a signal acquisition unit and a control unit, wherein the vibration absorption unit is used for absorbing vibration of a controlled system; the signal acquisition unit is used for acquiring a vibration frequency of the controlled system; the control unit is used for adjusting an inherent frequency of the vibration absorption unit according to the obtained vibration frequency so as to absorb the vibration of the controlled system; the vibration absorption unit comprises a shell fixed on the controlled system; an iron core and a first electromagnetic coil capable of applying a vertical induction force to the iron core are arranged in the shell; at least one group of damping-adjustable damping units controlled by the control unit is arranged between the iron core and the shell; and the first electromagnetic coil is connected with the control unit and is controlled by the control unit. According to the vibration absorption system of the invention, the rigidity and the damping coefficient can be adjusted in real time according to the actual vibration frequency of the controlled system, so that frequency adjustment in a wide frequency domain is achieved, and the problems that a traditional vibration absorber is single in frequency and cannot be adjusted in real time are solved.

Description

technical field [0001] The invention relates to the technical field of automobile vibration-absorbing structures and control methods, in particular to an automobile dynamic vibration-absorbing system and a control method. Background technique [0002] The basic principle of the dynamic vibration absorber is to set the dynamic vibration absorber on the problem system, so that the phase difference between the vibration force generated by the dynamic vibration absorber and the vibration excitation force of the problem is 180°, so that the force generated by the motion of the dynamic vibration absorber can offset the vibration of the frequency of the problem system . The problem system and the vibration absorber constitute a two-degree-of-freedom system. Since the amplitude represents the vibration intensity, if the problem system is to be damped, its amplitude should be reduced. That is, when the external excitation frequency is equal to the natural frequency of the vibration ...

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 Applications(China)
IPC IPC(8): F16F15/02F16F15/027F16F15/03F16F15/08
CPCF16F15/002F16F15/022F16F15/03F16F15/08F16F15/0275F16F2230/08F16F2230/18F16F2224/045
Inventor 鲁媛徐艳平冯展杨诗豪
Owner DONGFENG MOTOR GRP
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