Design and DSP microprocessor implementation of digital sinusoidal tracking controllers

The flight control of a spinning flying vehicle may be more involved than that of a missile or even an aircraft since the actuators are on a rotating frame instead of a fixed one. One possible solution is to oscillate the canards according to the spinning frequency and phase of the vehicle so that the deflection of the canards seen from the earth is unaffected by the spinning. The problem becomes a sinusoidal tracking control problem that can be solved by the discrete-time optimal regulator/tracking control theory. Both the frequency and time domain aspects of the design are discussed. The designed tracking controller will be implemented on a DSP microprocessor. Some practical issues arising in the implementation are also addressed.