This paper proposes a novel service configuration approach that can realize dynamic critical Quality of Service (QoS) adaptation to ever-changing and resource-limited ubiquitous computing environments. In the approach, service configuration is reduced to a Fuzzy Control System (FCS) which aims to achieve critical QoS variations on minimal level with less power cost. Two configuration strategies...

In this paper we consider the selection of controlled variables for two vapour compression cycles. One is a conventional sub-critical ammonia cooling cycle and the other is a trans-critical CO2 cooling cycle. The two cycles have quite different operational properties. For the ammonia cycle we find that several simple control structures gives acceptable performance in terms of achieving in pract...

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This paper describes the application of self-optimizing control to a large scale process, the HDA plant. The idea is to select controlled variables which when kept constant lead to minimum economic loss. In order to avoid the combinatorial problem common to the selection of outputs/measurements for such large plants, applications of singular value decomposition (SVD) based methods are used whic...

A control-Lyapunov approach is used to develop an adaptive optimizing control allocation algorithm for over-actuated mechanical systems where the actuator model is a¢ ne in the uncertain parameters. Uniform global (asymptotic) stability is guaranteed by the control allocation de…ned by the dynamic update laws in combination with an exponentially stable controller. Copyright c IFAC Keywords: Non...

The article presents a theoretical analysis and the results of an empirical study problem relationship between self-attitude locus control in students higher education. education showed that, general, they have positive attitude towards themselves, accept themselves as are, but their self-interest, self-management, self-understanding, autosympathy turned out to be insufficiently developed. Whic...

In the present study, field oriented control of step motor implementation has been analyzed sothat it can make a Sensorless control. Efficiency and Facilities of step motor is more than othertypes of electromotor. Therefore, the numbers of mechanisms and different types of turning canbe made into them. Also controlling these motors is easier than other available motors. Steppingmotor has been d...

Self-optimizing control is a promising method for selection of controlled variables (CVs) from available measurements. Recently, Ye et al. [2012] have proposed a globally optimal method for selection of self-optimizing CVs by converting the CV selection problem into a regression problem. In this approach, the necessary conditions of optimality (NCO) are approximated with linear combinations of ...