Abstract: Image-based rotary sensors have the advantages of being simple and low cost and exhibit good robustness to harsh conditions. Existing image-based sensors calculate angle positions by mark ...

Abstract: The protection is one of the most important techniques for the modular multilevel converter (MMC) high-voltage dc (HVdc) system. The existing single-ended dc line protections are mainly ...

Drawing Christmas bells is a simple, cheerful activity that doesn’t need fancy supplies or drawing skills. With just a pencil and a few colours, children can create festive bells that look cute, funny ...