Optimal Model Following Techniques Applied to the Lateral-Directional Axes of a Fighter Aircraft.
Abstract
A lateral-directional controller was designed for the F-4C/D aircraft utilizing two optimal model following techniques. The 'model in the performance index' method incorporates a model of the desired lateral dynamics into the performance index and minimizes the error between the model and system state derivatives. The 'model in the system' method of design incorporates a model of the desired dynamics into the actual control system and minimizes the difference between the system and model state vectors. A model of the lateral-directional axes was formulated which incorporated dutch roll natural frequency, dutch roll damping factor, and the roll time constant. The values of these parameters were selected to correspond to the operational aircraft over five flight conditions. For the 'model in the performance index' method, a four gain controller was arrived at employing rudder and ailerons as the controls. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1970
- Accession Number
- AD0873039
Entities
People
- Kenneth Wayne Bassett
Organizations
- Air Force Institute of Technology