The uncertain systems under considered depend on norm-bounded time-varying matrices of uncertain parameters. The authors develop a quadratic guaranteed cost control method for robust stabilisation via linear memoryless state feedback and static output feedback. Also presented is a robust state feedback controller and static output feedback controller. It is shown that the state feedback control...

The author presents solutions to input-to-state stabilization and integral input-to-state stabilization problems for nonlinear systems based on the novel concept of state-dependent scaling design. Both state-feedback and output-feedback controllers are constructed in a uni ed way. The method provides global solutions whenever the system is in the strict-feedback or output-feedback form. The pap...

his study investigated the farmers’ feedback on Agricultural Development Project’s (ADP’s) performance. The study was carried out in Kogi State, Nigeria. Interview schedules were used to collect data from 160 contact farmers and 80 field extension workers who were randomly selected using multistage random sampling techniques. The data collected were subjected to both descriptive and non-paramet...

In this paper, first a new algorithm for pole assignment of closed-loop multi-variable controllable systems in a prescribed region of the z-plane is presented. Then, robust state feedback controllers are designed by implementing a neural fuzzy system for the placement of closed-loop poles of a controllable system in a prescribed region in the left-hand side of z-plane. A new method based on the...

In the present paper we address a state feedback H 1 suboptimal control problem for a rigid spacecraft with three control torques and disturbances. The state feedback H 1 suboptimal control problem on T SO(3) is transferred to a corresponding state feedback H 1 suboptimal control problem on T S 3 , and the Hamilton-Jacobi inequality associated with this problem is solved. We obtain a state feed...

An optimal control problem is studied, in which the state is required to remain in a compact set S. A control feedback law is constructed which, for given ε > 0, produces ε-optimal trajectories that satisfy the state constraint universally with respect to all initial conditions in S. The construction relies upon a constraint removal technique which utilizes geometric properties of inner approxi...

Introduction For all but the simplest control schemes to be effective, some description of the process to be controlled must be available. Usually this description is a mathematical model. However a series of difficulties may be encountered while developing a meaningful and realistic mathematical description of the chemical process. Thus for most processes, a “reasonable model” with some “good”...

In this paper we study about stabilization of linear control system by using the dynamic state/output feedback control. We can prove that the dynamic state feedback control exists if the static state feedback control exists. But the existence of the dynamic output feedback control can not be guaranteed only by the existence of static feedback control, passive condition is needed. By applying th...

The problem of pole assignment, also known as an eigenvalue assignment, in linear discrete-time periodic systems in discs was solved by a novel method which employs elementary similarity operations. The former methods tried to assign the points inside the unit circle while preserving the stability of the discrete time periodic system. Nevertheless, now we can obtain the location of eigenvalues ...

The problem of stable exact model matching of linear systems by static state feedback is considered. Based on the effect that a static state feedback produces on the unobservable/controllable part of the closed-loop system, we provide the set of all static state feedback control laws that solve the exact model matching. Moreover, necessary and sufficient conditions for the existence of static s...