Active suspension FxLMS self-adaption control method based on acceleration signal feedback

An adaptive control and active suspension technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of reducing the quality of the whole vehicle, increasing the diversity of vibration orders, and affecting the ride comfort.

Inactive Publication Date: 2016-06-29
TONGJI UNIV
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction of vehicle quality will adversely affect the NVH characteristics of the vehicle
It is also for the purpose of improving fuel economy, such as the Audi S8 and other high-end cars, which adopt engine cylinder deactivation technology, while deactivation technology increases the diversity of vibration orders, and at the same

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
  • Active suspension FxLMS self-adaption control method based on acceleration signal feedback
  • Active suspension FxLMS self-adaption control method based on acceleration signal feedback
  • Active suspension FxLMS self-adaption control method based on acceleration signal feedback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The embodiments of the present invention will be further described below in conjunction with the drawings.

[0023] The FxLMS adaptive control method of active mount based on acceleration signal feedback includes FxLMS (Filter-xLeastMeanSquare, filter x minimum mean square error) adaptive control method based on force feedback, reference signal estimation method based on engine speed, and force feedback to acceleration Feedback extension method. Such as figure 1 As shown, the active suspension control method takes the engine speed and the acceleration of the passive side of the active suspension as input, and outputs an appropriate voltage control signal after being processed by the control system. The voltage signal is amplified by the power to drive the internal actuator of the active suspension. To cancel the vibration from the engine. The specific implementation steps are as follows:

[0024] Step 1: Build an active suspension model. The input in the model is the vibra...

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 active suspension FxLMS self-adaption control method based on acceleration signal feedback.Active suspension control methods comprises the FxLMS self-adaption control method based on force feedback, a reference signal estimation method based on engine speed and a force feedback to acceleration feedback expansion method, wherein the FxLMS self-adaption control method based on force feedback comprises active suspension voltage to force secondary channel estimation and an LMS self-adapting filter.According to the force feedback to acceleration feedback expansion method, suspending vehicle body acceleration admittance phase angle frequency changing characteristics are adopted as reference, a secondary channel estimation model is expanded from force to acceleration, and acceleration of the passive side of an active suspension substitutes force transmitted to a vehicle body to serve as an error signal of a controller, so that acceleration feedback of the control method is achieved.According to the active suspension control method, engine speed and acceleration of the passive side of the active suspension are taken as input, processing is conducted through a control system, a proper voltage control signal is output, and the voltage signal is subjected to power amplification and then drives an actuator in the active suspension to actuate, so that vibration from an engine is counteracted.

Description

Technical field [0001] The invention relates to an FxLMS adaptive control method for active suspension based on acceleration signal feedback, and belongs to the field of active suspension of automobile powertrains. Background technique [0002] Nowadays, people have higher and higher requirements for car ride comfort, so NVH (Noise, Vibration and Harshness) characteristics have become an important criterion for measuring car quality. However, considering the need to improve fuel economy, automobiles are now moving in the direction of lighter weight. The reduction in the quality of the vehicle will adversely affect the NVH characteristics of the vehicle. It is also for the purpose of improving fuel economy. For example, high-end cars such as the Audi S8 adopt engine closed-cylinder technology. While the closed-cylinder technology increases the diversity of vibration orders, it exacerbates the problem of uneven engine vibration. In addition, in recent years, the development of hy...

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): G05B13/04
CPCG05B13/04
Inventor 郭荣周圣奇位小康高俊
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap