Researchers at Harbin Institute of Technology (HIT) have made comprehensive summaries and comparisons of the advanced field weakening (FW) control strategies of permanent magnet synchronous motors ...
According to different field weakening (FW) control theories, these strategies can be divided into calculation-based methods, voltage closed-loop control methods, and model predictive control (MPC) ...
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Why Mercury’s magnetic field is weakening
Mercury, the smallest planet in our solar system, has a magnetic field that has intrigued scientists for decades. Recent observations indicate that this magnetic field is weakening, prompting ...
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Earth’s magnetic field nearly vanished in a terrifying close call
Roughly 42,000 years ago, Earth’s magnetic field weakened dramatically during the Laschamps geomagnetic excursion, allowing more cosmic radiation to reach the atmosphere. In a peer‑reviewed study of ...
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