A method for pressure control of self-supplied variable displacement axial piston pumps is considered. By analyzing the mathematical model, a crucial part of the nonlinear system is found to be a piecewise linear function. A control strategy composed of an overall feedforward control and a feedback control is given using the smooth hinge function. Compared with current switching feedforward con...

SiC Schottky Barrier diodes (SiC-SBD) are known to oscillate/ring in the output terminal when used as free-wheeling diodes in voltage source converters. This ringing is due to RLC resonance between the diode capacitance, parasitic resistance and circuit stray inductance. In this paper, a model has been developed for calculating the switching energy of SiC diodes as a function of the switching r...

This paper studies a discrete-time optimal switching problem on a finite horizon. The underlying model has a running reward, terminal reward and signed (positive and negative) switching costs. Using the martingale approach to optimal stopping problems, we extend a well known explicit dynamic programming method for computing the value function and the optimal strategy to the case of signed switc...

The paper aims at providing a switching solution for a parametrized Belgian chocolate stabilization problem posed by Blondel. We show that for any given value of the parameter describing the given transfer function, there exist simple switching and periodic control laws that stabilize the plant. The simplicity in designing these control laws sharply contrasts with the difficulty of designing a ...

In this paper the extension of LaSalle’s Invariance Principle for switched nonlinear systems is studied. Unlike most existing results in which each switching mode in the system needs to be asymptotically stable, in this paper we allow the switching modes to be only stable. Under certain ergodicity assumptions of the switching signals, two extensions of LaSalle’s Invariance Principle for global ...

This technical note considers the stabilization problem for switched affine systems with a sampled-data switching law. The switching law is assumed to be a function of the system state at sampling instants and the sampling interval may be subject to variations or uncertainty. We provide a robust switching law design that takes into account the sampled-data implementation and uncertainties. The ...

One of the most important issues in power system restoration is overvoltages caused by transformer switching. These overvoltages might damage some equipment and delay power system restoration. This paper presents a radial basis function neural network (RBFNN) to study transformer switching overvoltages. To achieve good generalization capability for developed RBFNN, equivalent parameters of the ...

Poplack (1993: 255) defines code-switching as the juxtaposition of multi-word sequences, each of which is internally consistent with the grammatical patterns of its respective language. Thus, in code-switching, the patterns of each language are maintained, as bilinguals switch between— not ‘mix’—their two languages (cf. Haugen 1950). Some, however, have claimed that codeswitching can have an ef...