Accession Number:

ADA106742

Title:

A Model-Following Technique for Insensitive Aircraft Control Systems.

Descriptive Note:

Research rept.,

Corporate Author:

STANFORD UNIV CA DEPT OF AERONAUTICS AND ASTRONAUTICS

Personal Author(s):

• Nield, George C., IV

Report Date:

1981-01-01

Pagination or Media Count:

104.0

Abstract:

The problem of designing multivariable control systems is addressed through the use of model-following methods. A number of different model-following techniques are discussed, and their advantages and disadvantages are presented. It is shown that model-following theories can provide useful structural insight to the designer, and that they can help to integrate the methods of classical and modern control. A new design method is presented which, when implemented, uses model following and full-state feedback to keep the dominant roots of a system constant. Under favorable circumstances, it can do this even in the presence of arbitrarily large parameter uncertainties. The method has the attractive feature that the parameter-insensitivity and disturbance-rejection characteristics of the system can be selected independently from the no-disturbance, nominal-plant performance. Application is made to several aircraft flight control problems. Author

Descriptors:

• *COMPUTERIZED SIMULATION
• *FLIGHT CONTROL SYSTEMS
• OPTIMIZATION
• MULTIVARIATE ANALYSIS
• MATRICES(MATHEMATICS)
• THESES
• PROTOTYPES
• WEIGHTING FUNCTIONS
• MATHEMATICAL FILTERS
• FEEDBACK
• SYSTEMS ANALYSIS
• CONTROL THEORY
• DYNAMIC PROGRAMMING

Subject Categories:

• Flight Control and Instrumentation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE