Passive damping controller design for nanopositioners

Author

Das, Sajal K. ; Pota, Hemanshu R. ; Petersen, Ian R.

Author_Institution

Sch. of Eng. & Inf. Technol. (SEIT), Univ. of New South Wales at the Australian Defence Force Acad. (UNSW@ADFA), Canberra, ACT, Australia

fYear

2014

fDate

4-6 June 2014

Firstpage

3645

Lastpage

3650

Abstract

A design of a passive damping controller to damp first resonant mode of a piezoelectric tube scanner (PTS) used in most commercial atomic force microscopes (AFMs) for nanopositioning is proposed in this paper. The stability analysis between the proposed controller and PTS is presented by an analytical framework which examines the finite-gain stability for a positive feedback interconnection between two stable, linear time-invariant systems where one system has “mixed” passivity, negative-imaginary and small-gain properties and the other system has “mixed” negative-imaginary, negative-passivity, and small-gain properties. Experimental results are presented to show the effectiveness of the proposed controller.

Keywords

atomic force microscopy; control system synthesis; damping; feedback; linear systems; nanopositioning; optical scanners; piezoelectric devices; stability; AFM; PTS; atomic force microscopes; finite-gain stability; first resonant mode; linear time-invariant systems; mixed negative-imaginary; mixed passivity; nanopositioners; nanopositioning; negative-passivity; passive damping controller design; piezoelectric tube scanner; positive feedback interconnection; small-gain properties; stability analysis; Atomic force microscopy; Damping; Electron tubes; Force; Nickel; Sensors; Control applications; Nano systems; Smart structures;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference (ACC), 2014

Conference_Location

Portland, OR

ISSN

0743-1619

Print_ISBN

978-1-4799-3272-6

Type

conf

DOI

10.1109/ACC.2014.6858901

Filename

6858901