this work proposes a neural-fuzzy sliding mode control scheme for a hydro-turbine speed governor system. considering the assumption of elastic water hammer, a nonlinear mode of the hydro-turbine governor system is established. by linearizing this mode, a sliding mode controller is designed. the linearized mode is subject to uncertainties. the uncertainties are generated in the process of linear...

This paper introduces an explicit reference governor approach for controlling time delay linear systems subject to state and input constraints. The proposed framework relies on suitable invariant sets that can be built using both Lyapunov-Razumikhin and LyapunovKrasovskii arguments. The proposed method is validated both numerically and experimentally using several alternative formulations.

MUCH IS AT STAKE IN THE 2012 PRESIDENTIAL ELECtion. President Barack Obama’s vision and former Governor Mitt Romney’s vision differ across many domains, but perhaps most starkly in the area of health policy. Fundamentally, the candidates disagree on the role of government as the guarantor of affordable access to health insurance, as evidenced by their plans for private insurance markets, Medica...

In this study, condensation heat transfer coefficients (HTCs) of HCFC22, HCFC123, HFC134a and HFC245fa are measured on a horizontal plain tube 19.0 mm outside diameter. All data are taken at the vapor temperature of 39 with a wall subcooling temperature 3-8 . Test results show the HTCs of newly developed alternative low vapor pressure refrigerant, HFC245fa, on a smooth tube are 9.5% higher than...

The high throughput preparation of emulsions with high internal volume fractions is important for many different applications, e.g., drug delivery. However, most emulsification techniques reach only low internal volume fractions and need stable flow rates that are often difficult to control. Here, we present a centrifugal high throughput step emulsification disk for the fast and easy production...

Let I be an interval. I need not be compact or bounded. Let f : I → I be a continuous map, and (x0, x1, · · · , xn) be a trajectory of f with xn ≤ x0 < x1 or x1 < x0 ≤ xn. Then there is a point v ∈ I such that min{x0, · · · , xn} < v = f(v) < max{x0, · · · , xn}. A point y ∈ I is called a centripetal point of f relative to v if y < f(y) < v or v < f(y) < y, and y is centrifugal if f(y) < y < v ...

Abstract So-called respectively readings have posed serious challenges for theories of syntax and semantics. Sentences like George and Martha respectively denounced and were denounced by the governor (McCawley 1998) show that although the conjoined verbal expressions share the same syntactic subject, they do not predicate that subject in the same way; George (not Martha) denounced the governor,...

The handling of constraints in systems subject to variable time-delay is a challenging problem. It is particularly relevant to Network Control Systems (NCSs) in which a control system is remotely located with respect to the plant to be controlled. In this paper, we develop reference governors for controlling constrained systems subject to variable delays with a particular focus on the applicati...

t •onsiderable concern for supporters of Iii-her education in Oklahoma . _Adhering to a disquieting tradition of giving higher education appropr •i ations until last, the Legislature adjourned, narrowly having averted anticipated major cuts by a one-time raid on the Rainy Day Fund. The lawmakers warned, however, that prospects for 1994, without such access to the reserve fund, looked dim indeed...