Adaptive feedback linearizing control schemes are used to suppress limit cycle oscillations in nonlinear systems where the system parameters are either unknown or uncertain. Parameter convergence is desirable in these schemes as it provides a measure of robustness of the scheme and also permits the unknown/uncertain system parameters to be estimated. In recent work, we have shown how using a pe...

This paper investigates the problem of output feedback attitude control for rigid spacecraft subject to inertia matrix uncertainty, space disturbance, and input saturation. Firstly, a model transformation is adopted convert an system with immeasurable angular velocity into new system. All states converted are measurable available feedback; however, contains mismatched uncertainty resulting from...

The paper presents a new algorithm, its implementation, and results of extensive testing, for a microprocessor-based lowimpedance busbar relay. For increased security, the presented technique combines percent differential and current directional protection principles. The directional (phase comparison) principle does not require a voltage signal as it responds to relative directions of the curr...

The adaptive robust control (ARC) for DC motors subjected to parametric uncertainties, disturbances and input saturation is considered in this study. To achieve high performance while keeping the control authority within saturation limit, a saturated ARC scheme is proposed. In this scheme, a variable-gain saturation function is introduced for the virtual control law, so that the amplitude of th...

We present an a posteriori error estimate of hierarchical type for the mimetic discretization of elliptic problems. Under a saturation assumption, the global reliability and efficiency of the proposed a posteriori estimator are proved. Several numerical experiments assess the actual performance of the local error indicators in driving adaptive mesh refinement algorithms based on different marki...

Low-gain integral control strategies are presented for tracking of constant reference signals for asymptotically stable, finite-dimensional, single-input, single-output, continuoustime or discrete-time linear systems subject to certain classes of actuator and sensor nonlinearities. Both non-adaptive (but possibly time-varying) and adaptive integrator gains are considered in continuous-time, dis...

| We propose a motion adaptive sensor for image enhancement and wide dynamic range sensing. The motion adaptive sensor is able to control integration time pixel by pixel. The integration time is determined by saturation and temporal changes of incident light. It is expected to have high temporal resolution in the moving area, high SNR in the static area, and wide dynamic range. We have fabricat...