Accession Number:

ADA143726

Title:

Optimizing Parameters and Controls for Maneuvering Flexible Structures.

Descriptive Note:

Doctoral thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1984-01-01

Pagination or Media Count:

92.0

Abstract:

The combined problem of optimizing both the parameters and the control for maneuvering flexible structures is addressed. The necessary conditions for the general problem are defined and a numerical technique for the solution is discussed. Implementing the numerical solutions is shown to be practical using reduced-order structural models. Optimal controls are smoothed by including control derivative penalties in order to allow terminal values for the controls to be specified. The optimization leads to the investigation of structures that require only simple rigid body controls for accomplishing the maneuver while ensuring minimal modal excitation at the maneuvers completion. Numerical examples are presented for single axis slew maneuvers of a symmetric four boom flexible structure. Author

Subject Categories:

  • Numerical Mathematics
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE