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

Vehicle suspension with adjustable shock absorber damping coefficient and collaborative design method

A damping coefficient and vehicle suspension technology, applied in the field of rail vehicles, can solve the problems that the parameters cannot be adjusted and the performance is difficult to meet people's higher comfort and stability of rail vehicle operation, and achieve the effect of improving safety and comfort.

Active Publication Date: 2021-03-02
HUNAN UNIV
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the traditional passive suspension in the prior art cannot be adjusted once its parameters are determined, so that its performance cannot meet people's requirements for higher comfort and stability in rail vehicle operation. A vehicle suspension with adjustable damping coefficient of the shock absorber and a spring stiffness K for the spring, the maximum damping coefficient c of the damping adjustable shock absorber max The collaborative design method with the inertial mass I of the inerter can cooperate with the control system to adjust the damping coefficient parameters during use, thereby improving the running stability of rail vehicles and satisfying people's expectations for higher comfort and stability of rail vehicles. requirements

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
  • Vehicle suspension with adjustable shock absorber damping coefficient and collaborative design method
  • Vehicle suspension with adjustable shock absorber damping coefficient and collaborative design method
  • Vehicle suspension with adjustable shock absorber damping coefficient and collaborative design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Such as figure 1 As shown, a vehicle suspension with adjustable damping coefficient of the shock absorber described in this application includes a spring 1, an adjustable damping shock absorber 2 and an inerter 3, the spring 1, the adjustable damping shock absorber The container 2 and the inerter 3 are arranged in parallel with each other.

[0057] On the basis of the above, in a further preferred manner, the damping adjustable shock absorber 2 is an electromagnetic eddy current shock absorber.

[0058] A vehicle suspension with adjustable damping coefficient of the shock absorber described in the present application includes a spring, an adjustable damping shock absorber and an inerter, the spring, the adjustable damping shock absorber and the inerter set in parallel with each other. The damping adjustable shock absorber is an electromagnetic eddy current shock absorber, its damping coefficient can be adjusted by adjusting the exciting current of the electromagnet, a...

Embodiment 2

[0065] Such as figure 2 and 3 As shown, this embodiment discloses a collaborative design method for the spring stiffness K of the spring 1 and the maximum damping coefficient c of the damping adjustable shock absorber 2 max Collaborative design with the inertial mass I of the inertial container 3, the collaborative design method comprises the following steps:

[0066] S1. According to the principle of dynamics, a vertical six-degree-of-freedom dynamics model is established based on a vehicle suspension with adjustable damping coefficient of the shock absorber described in this application, such as figure 2 shown;

[0067] S2. According to the basic parameters of the vehicle, as well as various conventional loads and ultimate loads at both ends of the vehicle suspension under different working conditions, and based on the vertical six-degree-of-freedom dynamic model, calculate the load time history function value F under the corresponding working conditions t ; Wherein, th...

Embodiment 3

[0094] Such as figure 2 and 4 As shown, this embodiment discloses a collaborative design method. The response matrix in Embodiment 1 can also be implemented in a cyclic calculation method, that is, the spring stiffness K of the spring 1, the adjustable damping Maximum damping coefficient c of shock absorber 2 max and the inertial mass I of the inerter 3, first select two of them as fixed values, and then change the third parameter as a variable to calculate the corresponding overall response value Ψ, and then loop in turn to determine two of the parameters , change the third parameter as a variable, and compare each cycle, and finally find the minimum value Ψ among all the overall response values ​​Ψ min , the minimum value Ψ min Corresponding spring stiffness K, maximum damping coefficient c max and the inertial mass I are the final design values, which are specifically:

[0095] Step 1. Establish a vertical six-degree-of-freedom dynamics model based on the vehicle susp...

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 field of railway vehicles, in particular to a vehicle suspension with an adjustable shock absorber damping coefficient and a collaborative design method. The vehicle suspension with the adjustable damping coefficient of the shock absorber comprises a spring, the shock absorber with the adjustable damping coefficient and an inerter, and the spring, the shock absorber with the adjustable damping coefficient and the inerter are arranged in parallel. The damping-adjustable shock absorber is an electromagnetic eddy current shock absorber, the damping coefficient of theshock absorber can be adjusted by adjusting the excitation current of an electromagnet, and the damping coefficient of the shock absorber can be adjusted to the most suitable value by matching with acontrol system according to the requirements of different working conditions and the attributes of a spring and an inerter in the vehicle running process. and thus, the driving safety and comfort of the railway vehicle are improved. The invention further provides a collaborative design method for the spring rigidity, the maximum damping coefficient of the damping-adjustable shock absorber and theinertia mass of the inerter.

Description

technical field [0001] The invention relates to the field of rail vehicles, in particular to a vehicle suspension with adjustable damping coefficient of a shock absorber and a collaborative design method. Background technique [0002] As an important part of the steering system of a rail vehicle, the performance of the suspension directly affects the safety and ride comfort of the rail vehicle. Based on this, if the performance of the suspension system can be improved, the safety and comfort of rail vehicles will be effectively improved. [0003] The combination of the inerter, the spring and the damping unit can develop a composite ternary damping unit with any mechanical impedance. At present, the ternary vibration reduction theory based on inertia has caused a research boom in the field of mechanical vibration control, and has greatly promoted the research and development of new vehicle suspension systems and steering systems. [0004] In the field of vibration control,...

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): G06F30/15G06F30/17G06F30/20G06F119/14
CPCG06F30/15G06F30/17G06F30/20G06F2119/14
Inventor 陈政清沈龙江王帅封周权华旭刚牛华伟
Owner HUNAN 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