Weakening Holonomyandrew

A Novel High-Performance Field-Weakening Control for Axial Flux-Switching Permanent-Magnet Motor

By combining the field-weakening control principle of a new axial flux-switching permanent-magnet motor (AFFSSPM) with the space vector pulse width modulation (SVPWM) and maximum torque per voltage (MTPV) control principle, a novel field-weakening control strategy for AFFSSPM is proposed in this paper. In the first stage of the field-weakening, the difference between the reference voltage updat...

A new optimization of segmented Interior permanent magnet synchronous motor based on increasing flux weakening range and output torque

In this paper a new optimization function for increasing the flux weakening range and output torque value of segmented interior permanent magnet synchronous motor (SIPMSM) is presented. In proposed objective function normalized characteristic current and saliency ratio are considered as two optimization variables during optimization process. The focus of this paper is rotor structure design suc...

Investigation the Combination of the Bullwhip Effect Weakening and the Anti-Bullwhip Effect Strengthen

Consonantal Weakening and Licensing in Optimality Theory

This paper explores several patterns of consonantal weakening such as voicing and spirantization. Given that such weakening usually applies to either intervocalic or intersonorant obstruents, this paper contends that inherently redundant features such as [voice] for sonorants or [continuant] for vowels, cannot license their syllabic constituents, thus triggering consonantal weakening. In additi...

Frictional weakening and slip complexity in earthquake faults

Previous work has shown that velocity-weakening friction produces slip complexity in simple dynamical models of earthquake faults ( Carlson and Langer, 1989). Rere I show that a different type of dynamical instability, caused by slipweakening friction, also produces slip complexity. The deterministically chaotic slip complexity produced by slip-weakening friction in a simple one dimensional mod...