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Lesion segmentation is a fundamental task that has been widely studied in biomedicine. State‐of‐the‐art methods still struggle with the inherent challenges of dermoscopic images such as uncertain boundaries or severe occlusion. In this study, we argue that this task can be better resolved by introducing user interaction and proposing a deep interactive framework for lesion segmentation. Our method...
This paper proposes a direct torque control strategy for a brushless dc (BLDC) motor with a single sided matrix converter (SSMC) for an electrohydrostatic actuator system in aerospace application. A hybrid two- and three-phase switching mode is applied to minimize torque ripples during commutation. A six-phase SSMC is investigated and the simulation results are presented. Compared with current hysteresis...
In railway traction applications, due to the limitation of switching frequency and the attempt to fully utilize the DC-link voltage, the traction inverters usually work in six-step (or quasi-square-wave) mode under heavy load or high frequency condition. Meanwhile, DC-link voltage fluctuation, stemming from a common single-phase grid-side power supply, has a great impact on the drive system. To maintain...
Dc-link voltage fluctuation, originated from the single-phase power supply, has a significant impact on the railway traction drive system. This impact is of importance for stable operation and better performance. Meanwhile, the high-power and limited space of traction inverter requires low-switching frequency modulation techniques. The influence on performance of the traction drive system under these...
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