This paper is concerned with the problem of designing discrete-time control systems with closed-loop eigenvalues in a prescribed region of stability. First, we obtain a state feedback matrix which assigns all the eigenvalues to zero, and then by elementary similarity operations we find a state feedback which assigns the eigenvalues inside a circle with center   and radius. This new algorithm ca...

On Navy ships, technological developments enable crews to work more efficiently and effectively. However, in such complex, autonomous, and information-rich environments a competition for the users’ attention is going on between different information items, possibly leading to a cognitive overload. This overload originates in the limitations of human attention and constitutes a well-known and we...

3 Classical closed-loop control 8 3.1 PID feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Transfer functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Closed-loop stability . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.4 Gain and phase margins and robustness . . . . . . . . . . . . . . . . 12 3.5 Sensitivity function and fundamental...

An active flutter suppression using linear sub-optimal control scheme is investigated for a 2dof airfoil system with nonlinear torsional stiffness and limited deflection amplitude of its single actuator. The suppression of limit cycle oscillations in the nonlinear closed-loop system is achieved through maximization of the stability region of its linearized system. The critical value of the cont...