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Direct-drive flight actuators: new challenging problems in nonlinear analysis and control of servo-systems

This paper designs advanced servo-systems to actuate control surfaces of flight vehicles (aircraft and helicopters, missiles, etc.). Advanced research is needed to design novel flight actuators with management systems to attain the specified objectives. The actuator dynamics and deflection rate capabilities significantly influence the vehicle performance. In this paper we study the application of brushless limited angle torque motors with high-frequency zero-current switching converters. Nonlinear mathematical models of servo-motors and resonant converters are developed, and tracking control algorithms are designed. These controllers are verified to analyze the servo-system performance, assessing it possible implementation in flight vehicles.