Kobe Steel (Japan)

Defect-induced recombination analysis in 4H-SiC epitaxial layers based on detailed microwave photoconductive decay curve evaluation

Evaluation of defect-related carrier lifetimes in 4H-SiC epitaxial layers is essential for assessing material quality and device performance. The microwave photoconductive decay (μ-PCD) method is widely used for wafer-level lifetime characterization; however, conventional evaluat...

Improvement of Surface Cracks in Aluminum Alloy Strip Casting Using a Grooved Roll in a Vertical-Type High-Speed Twin Roll Caster

A vertical-type high-speed twin roll caster can cast aluminum alloy strip at speeds from 20 to 90 m/min; however, surface cracks occur on the cast strip. In Al-Si alloys, surface cracks are known to occur when the Si content is less than 5 mass%. The condition of the surface crac...

Predictive virtual sensor identification for nonlinear MPC: application to a 2-DoF flexible direct-drive robotic arm

Nonlinear Model Predictive Control (NMPC) is a powerful optimal control framework for nonlinear systems, offering high flexibility and performance. NMPC operates by solving an optimal control problem online at each time step, which requires predictive models capable of predicting...