In this paper, the tracking control problem of a class of uncertain Euler-Lagrange systems subjected to unknown input delay and bounded disturbances is addressed. To this front, a novel delay dependent control law, referred as Adaptive Robust Outer Loop Control (AROLC) is proposed. Compared to the conventional predictor based approaches, the proposed controller is capable of negotiating any inp...

For high-speed brushless DC (BLDC) drives, the switching-to-fundamental frequency ratio is usually insufficient. As a result, commutation errors caused by PWM switching delay are significant, which means power switches will take action at inaccurate instants. This cause low-frequency current oscillations and produce additional losses. In addition, conventional method accumulative in sensorless ...

A new gigabit ATM photonic switching architecture is here presented and first experimental results are reported. The matrix is based on wavelength encoding of cells and on the broadcast-and-select principle for routing. A suitable management of fibre delay lines allows alloptical output queueing inside each switching element. These output buffered switching elements are then interconnected in a...

Bitstream switching is an effective way to deal with the bandwidth variation issue in transmitting multimedia over the Internet or wireless networks. This paper proposes a fast intelligent bitstream switching algorithm that avoids the problem of long delay and high complexity that often occurred in prior solutions. We show that it can achieve very close performance as an off-line MSE-optimized ...

This paper proposes a new switching architecture to be used in all optical packet switching networks. The proposed switch is derived from an original 2 × 2 two-stage multi-buffer switched delay line based optical switching node, known as an M-Quadro node. By incorporating bypass lines into the M-Quadro architecture and employing a novel switch control strategy, the optical packet switching node...

This paper is concerned with the problem of delay-dependent exponential H∞ model reduction for discrete-time switched delay systems under switching signals with average dwell time (ADT). The objective is to construct a reduced-order model, which ensures that the resulting error system under switching signal with ADT is exponentially stable with an H∞ norm bound. A weighting factor α is introduc...

Clustering neighbouring nodes of an all-optical core network into medium-sized rings controlled by a master node allows two-way reservation-based control to aggregate bursts destined for other clusters in a lossless way with tolerable delay. The densely packed bursts can then be sent over static or switched light paths and be received in the destination cluster ring without the delay of end-to-...

Burst loss due to contention is a major issue in optical burst switching networks. In this paper, we propose a contention resolution scheme that uses a offset time different from that of conventional optical burst switching (OBS) to reduce burst loss and to provide QoS in optical burst switching networks. The proposed scheme can be tuned to both prioritized traffic and delay constraint traffic ...

| In this paper, a proole driven approach to behavioral synthesis is presented. For a given design and a set of input vectors, the switching activity in the design yields a measure of the power consumption. Every module in a parameterized module library is characterized by its average switching activity per input vector. For a given behavioral speciication, simulation using user-speciied inputs...