Technical Briefs

Minimum-Time/Energy, Output Transitions for Dual-Stage Systems

[+] Author and Article Information
Dhanakorn Iamratanakul

 Western Digital, 20511 Lake Forest Drive, Lake Forest, CA 92630-7741dhanakorn.iamratanakul@wdc.com

Santosh Devasia1

Department of Mechanical Engineering, University of Washington, Seattle, WA 98195devasia@u.washington.edu


Corresponding author.

J. Dyn. Sys., Meas., Control 131(2), 024503 (Feb 05, 2009) (8 pages) doi:10.1115/1.3072153 History: Received January 08, 2008; Revised December 01, 2008; Published February 05, 2009

This article addresses the optimal (minimum-time/energy) trajectory design for changing the output from one value y̱ to another y¯ within a finite time interval [0,tf] called the output-transition time interval. The output should be maintained constant (at the desired value) outside the output-transition time interval. The main contribution of this article is to establish the existence of a solution to the problem when preactuation (input applied during time t<0) and postactuation (input applied during time t>tf) are allowed. The advantage of using pre- and postactuation inputs is illustrated with an experimental dual-stage actuator system.

Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 1

Schematic of transition-time cost γtf, energy cost JE,opt, and total time/energy cost Ĵ(tf) as functions of transition time tf

Grahic Jump Location
Figure 2

The dual-stage actuator system

Grahic Jump Location
Figure 3

Comparison of time/input-energy cost: OOT versus SST

Grahic Jump Location
Figure 4

Experimental results for 2.5 μm output-transition



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In