Tuesday  |  Salon 8  |  09:20 AM–09:40 AM

#18928–Automated shaker placement and regularized input estimation for MIMO testing

Multi-input, multi-output (MIMO) testing is used in component qualification because it can accurately reproduce operational responses in a laboratory setting. Actuator locations are usually chosen by simulating the control problem using frequency response functions and minimizing a combination of the input energy and output residuals. To perform this minimization, the relative weights of input energy and residuals must be specified. This paper develops an objective function that compares actuator configurations based on control accuracy and required input energy without any manual parameter tuning. The objective function uses an optimally selected trade-off parameter for each candidate configuration based on the the Tikhonov regularization parameter used for input estimation. To select actuator locations using the new objective function, a pivoting algorithm for integer programming problems is developed.

Keaton Coletti   University of Georgia
R. Benjamin Davis   University of Georgia
Ryan Schultz   Sandia National Laboratories