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#### Rotary gust rejection for helicopters

(1998)

For the case of helicopters in straight horizontal flight, the effects of a rotary gust to the forward velocity and the downward velocity of the helicopter are rejected. The rotor commands appear to be independent, i.e. ...

#### Noninteracting control for helicopter in straight horizontal flight

(1998)

Pitch angle and forward velocity are decoupled via a static state feedback law for the case of helicopter in straight horizontal flight. The set of stability derivatives for which decoupling is satisfied, is explicitly ...

#### Decoupling of singular systems via P-D feedback

(1996)

The problem of input-output decoupling of singular systems via proportional plus derivative (P-D) feedback is solved. The necessary and sufficient condition for the problem to have a solution is established. A special ...

#### Robust exact model matching via P-D feedback with application to DC servo motor

(1996)

The problem of exact model matching for single input single output linear systems with nonlinear uncertain structure, via an independent of the uncertainties P-D state and output feedback, is studied. The necessary and ...

#### Disturbance decoupling of singular systems via P-D feedback

(1999)

The problem of disturbance decoupling of singular systems via proportional plus derivative (P-D) feedback is solved. The necessary and sufficient condition for the problem to be solvable is established as a rank condition ...