Abstract: Permanent magnet (PM) motors should have ultralow torque ripple when used in robot joints with high positioning accuracy. For this reason, to decrease the torque ripple of the conventional ...

Abstract: This article proposes new irregular consequent-pole hybrid magnet dual-stator machines (ICP-HMDSMs) with the merits of high torque density, low torque ripple (TR), and high space utilization ...

Since the discovery of planetary nebulae in the late 1700s, astronomers have learned that these expanding shells of glowing gas expelled by low-intermediate mass stars late in their lives can come in ...

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New research by the University of Birmingham examines how irregular migration is framed across media, politics, and civil society in the United Kingdom. The Narrative Construction of Migrant ...

Snowflakes are like letters from the sky, each crystal a note describing the atmosphere as it falls to the ground. They float effortlessly, but their creation is one of nature’s most complicated ...

The combined impact of so-called 'forever chemicals' is more harmful to the environment than single chemicals in isolation, a new study shows. The combined impact of so-called 'forever chemicals' is ...

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. Irregular coal pillars inevitably appear in the layout of the current long-wall mining ...