Integrated Control/Structure Design and Robustness

Document Number: 861821

Date Published: October 1986

Author(s):
A. Adamian - Mechanical, Aerospace and Nuclear Engineering Dept., Univ. o
J. S. Gibson - Mechanical, Aerospace and Nuclear Engineering Dept., Univ. o

Abstract:
When a flexible structure is to be controlled actively, optimum performance is obtained by integrated, or simultaneous, design of the structure and the controller, as opposed to the common practice of designing the structure independently of control consideration and then designing a controller for a fixed structure. The primary design objective from the structural point of view usually is to minimize weight, while the control design objectives depends on the application. An important requirement for a practical control system is robustness with respect to uncertain plant parameters. This paper discusses simultaneous control/structure design when the overall design objective combines the weight of the structure and the robustness of the closed-loop control system. For numerical optimization, robustness is represented by the sensitivity of the closed-loop eigenvalues with respect to uncertain parameters. An example illustrates the optimal design of a flexible structure along with a robust compensator.

File Size: 285K
Product Status: In Stock

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