Article
Control Proxy Functions for Sequential Design and Control Optimization
Journal of Mechanical Design
(2011)
Abstract
Optimal system design of “smart” products requires optimization of both the artifact and its controller. When the artifact and the controller designs are independent, the system solution is straightforward through sequential optimization. When the designs are coupled, combined simultaneous optimization can produce system-optimal results, but presents significant computational and organizational complexity. This paper presents a method that produces results comparable with those found with a simultaneous solution strategy, but with the simplicity of the sequential strategy. The artifact objective function is augmented by a control proxy function (CPF), representing the artifact’s ease of control. The key to successful use of this method is the selection of an appropriate CPF. Four theorems that govern the choice and evaluation of a CPF are given. Each theorem is illustrated using a simple mathematical example. Specific CPFs are then presented for particular problem formulations, and the method is applied to the optimal design and control of a micro-electrical mechanical system actuator.
Disciplines
Publication Date
September 15, 2011
DOI
https://doi.org/10.1115/1.4004792
Publisher Statement
This is a RoMEO green journal - Must link to publisher version with DOI
© 2011 by American Society of Mechanical Engineers
Citation Information
Diane L. Peters, Panos Y. Papalambros and A. Galip Ulsoy. "Control Proxy Functions for Sequential Design and Control Optimization" Journal of Mechanical Design Vol. 133 Iss. 9 (2011) p. 091007-1 - 091007-11 ISSN: 1050-0472 Available at: http://works.bepress.com/diane-peters/44/