This paper describes the time analysis of Chandra & Toueg's asynchronous consensus, an algorithm of major importance in the eld of fault-tolerant distributed computing. Contrary to other consensus protocols assuming semi-synchronous or synchronous conditions, Chandra & Toueg's algorithm considers an asynchronous system, thus requiring no bounds on communication delays nor on processes' speeds. ...

This paper describes the optimum design of a permanent-magnet-assisted reluctance rotor of a 110 kW reluctance synchronous traction machine. Previous studies show that the performance of the pure reluctance synchronous machine drive deteriorates fast in the flux-weakening speed region. To address this problem, thin bonded permanent-magnet sheet material is used inside the flux barriers of the r...

In this paper, the authors present a novel analytical model for rotordynamic analysis of high-speed permanent magnet synchronous machine (HS-PMSM) with retention sleeve. The proposed has fast response, accurate results, and sample formulation, is validated finite-element method (FEM). obtained results show proper accuracy solution approach. significant are: formulation HS-PMSMs can accurately c...

A common feature of animal locomotion is its organization into gaits with distinct patterns of movement and propulsor use for specific speeds. In terrestrial vertebrates, limb gaits have been extensively studied in diverse taxa and gait transitions have been shown to provide efficient locomotion across a wide range of speeds. In contrast, examination of gaits in fishes has focused on axial gait...

Whirlpool hash function should be capable of processing the input data streams at high speeds. We propose a fully synchronous parallel pipelined architecture with ten stages of pipelining between rounds, and internal pipelining within each round stage. The proposed architecture can tremendously improve the performance of Whirlpool hash function. Our final implementation can encrypt continuous b...

SR motors are gaining wider popularity among variable-speed drives. This is due to their simple, low-cost construction characterized by an absence of magnets and rotor winding, high level of performance over a wide range of speeds, and fault-tolerant power stage design. Availability and the moderate cost of the necessary electronic components make SR drives a viable alternative to other commonl...

The transient stability of a power system depends on the relative divergence angular speeds between voltage sources during fault disturbance. A unified speed control strategy is proposed here for grid-forming and synchronous machine sources. Specifically, consisting only converters (GFs), virtual all GFs to be frozen pre-fault value, while with mix machines (SMs), should weighted mean SM rotor ...

This paper introduces a hardware method of improving the performance of any synchronous digital system. We exploit the well-known observation that typical delays in synchronous systems are much less then the worst-case delays usually designed to, typically by factors of two or three or more. Our proposed family of hardware solutions employs timing error toleration (TIMERRTOL) to take advantage ...

In the paper the principle and performances of the pulsating current injection based sensorless control of permanent magnet synchronous motor (PMSM) are analyzed theoretically and investigated by simulations. In the analyses, the effects of the speed EMF terms and the deviation between the actual d-axis high-frequency current and the command, which results from the limited gain and bandwidth of...