We address the problem of state observation for a system whose dynamics may involve poorly known, perhaps even nonlocally Lipschitz functions and whose output measurement may be corrupted by noise. It is known that one way to cope with all these uncertainties and noise is to use a high-gain observer with a gain adapted on-line. As a difference from most previous results, we study such a solutio...

Large power system disturbances and their consequences, represent a challenging problem for the power industry and especially for the network system operators, the ones who are responsible for the network operation at large, its security and reliability. This fact has reinforced interest in the new generation of monitoring systems with the aim to gain if possible a precise and maximum knowledge...

In this paper the state estimator is developed for the multi area power system with SCADA and PMU measurements using WLS method. The measurement jacobian matrix has been modified for the PMU measurements. The behavior of the elements because of the current measurements in the measurement jacobian matrix is examined for any possible ill-conditioning of the state estimator gain matrix. State esti...

Programmable analog signal conditioning circuits can be programmed in the field to permit their use in several applications with a variety of sensors with different output signal characteristics. The digital programming of the gain and dc level shift of a conditioning circuit can affect the measurement resolution and cause a reduction in the range of the measuring system in which it is employed...

This paper presents a scheme for rapid measurement of frequency characteristics of electronic products using DSP techniques. The use of Complementary sequences instead of the Barker sequences completely removes the sidelobe error and provides exact measurement of the product characteristics in the absence of noise. DSP based testing allows us to send all the test frequencies through the device ...

This work presents an optimized method for the determination of multiple samples containing 90Sr when its daughter 90Y is measured after chemical separation and in sequence, i.e. during its decay. Consequently the measurement times will increase for each subsequent sample, since there has been a longer time for decay before measurement. Compared to a previously published approach, when 90Y is m...

Industrial organizations are complex systems` where the interactions among the various functions such as Sales, Distribution, Manufacturing, Materials, Finance, Human Resources and Maintenance have to be man-aged towards a common purpose of delivering the customers satisfaction. However, since most of these or-ganizations have a `Functional Structure`, each function or department works towards ...

To address the well-known noise sensitivity problems associated with high-gain observers, we insert a low-pass filter on measurement channel. Considering nonlinear plants in observability canonical form, first motivate an architecture where output error is filtered by linear system parametrized its arbitrary order and scalar positive gain. Our main result establishes exponential finite gain bou...