Evaluation of Analytic Deflection-Limiting Commands

Authors:	Robertson Michael, Georgia Institute of Technology, United States Singhose William, Georgia Institute of Technology, United States
Topic:	2.1 Control Design
Session:	Control of Mechanical and Flexible Systems
Keywords:	Aerospace Control, Flexible System, Vibration Reduction, Transient Response

Abstract

Command signals that can move a flexible system without residual vibration and also limit the transient deflection are very useful, but difficult to create. Historically, these types of commands have been generated via numerical optimization. A method for analytically creating deflection-limiting commands is described and evaluated. Characteristics of the command profile are presented as a function of deflection limit and move distance. Experimental results from a large bridge crane demonstrate key results. The major advantage of this method is that the problem is solvable in closed form, rather than via numerical optimization.