New Control Design Techniques Tailored to Smart Structural Systems.
Abstract
In this research, a new observer based control design specifically tailored to smart aeroelastic systems is presented. This truly multi-disciplinary system of an elastic structure with piezoelectric actuating and sensing under external aerodynamic load is modeled with an integrated finite element method. A new control design algorithm based on Reciprocal State Space' framework is developed to achieve the desired roll rate. The deformed structure for obtaining the specific roll rate is made up of new mass and stiffness matrices which are functions of the steady-state input voltage of the roll maneuver. The resulting model in the generalized coordinates which has a mass matrix, a nonsymmetric aerodynamic damping matrix and a nonsymmetric stiffness matrix (due to aerodynamic stiffness) is then transformed to real but nonorthogonal modal coordinates and a reduced order model is developed. The research carried out clearly delineates the relationship and interaction between the structural, aerodynamic and piezo actuations based control subsystems and underscores the importance, potential and the vast scope of the integrated approach presented to improve aircraft maneuver performance.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1998
- Accession Number
- ADA363850
Entities
People
- R. K. Yedavalli
Organizations
- Ohio State University