Active Vibration Control of a Convertible Structure based on a Linear Parameter-Varying Model. Issue 28 (2019)

• Record Type: Journal Article
• Authors: Jirasek, R.; Schauer, T.; Bleicher, A.
• Is Part Of: IFAC-PapersOnLine. Volume 52:Issue 28(2019)
• Page Start: 190
• Page End: 195
• Publication Date: 2019
• Subjects: LPV Systems -- Control Design -- Active Vibration Control -- Convertible Structures -- Finite Element Model -- Structural Engineering -- Modal Reduction -- Elastic Kinetic Motion Mechanism; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2019.12.375
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: This paper investigates modelling and active vibration control (AVC) of ultra-lightweight convertible structures based on the elastic kinetic motion mechanism with a focus on civil and structural engineering applications. Model building is carried out in the linear parameter-varying (LPV) framework for the example of a convertible Fin Ray structure. In a first step local linear time-invariant (LTI) models are derived from a finite element model of the structure for different transformation states. On the basis of this collection of local LTI models, a grid-based LPV model is established. An AVC of multiple modes is implemented by means of a modal velocity feedback control. Single-input single-output (SISO) control design is carried out with the root locus method for the first and second mode using the same control input under the assumption of well separated eigenfrequencies. The implemented AVC is validated in simulation.