Document Type

Patent

Abstract

A lightweight, high performance, active suspension system utilizing piezoelectric regulated springs, and a method of manufacturing the suspension system, is described. Piezoelectric material is bonded to suspension springs, and excited appropriately to vary the stiffness of the suspension system. A method of controlling the stiffness of a spring includes piezoelectric material bonded to the spring, a sensor system for generating a signal proportional to the loading imposed on the spring, and controller for exciting the piezoelectric material in response to the signal. A control system for controlling the stiffness of a spring including embedding a plurality of piezoelectric particles within an electrically conductive matrix forming the body of the spring is also described.

Patent Country

US

Patent Number

US5390949

Publication Date

2-21-1995

Assignee(s)

The University of Toledo

Application Number

08/027469

Filing Date

March 1993

Primary Class

280/5.515

Secondary Class

267/162; 267/228; 280/124.134; 280/124.141; 280/124.165; 280/124.171; 310/316.01

Rights

These materials are free of copyright restrictions and are in the public domain within the United States only. The USPTO reserves the right to assert copyright protection internationally.

Institution

The University of Toledo

Repository

University of Toledo Libraries

Digital Publisher

Digital Initiatives

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