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About

N. Hemati is a control systems and robotics researcher whose career has centered on two interconnected domains: the precise control of brushless DC motors (BLDCMs) and the dynamics of robotic manipulators. His most influential contribution, "Robust Nonlinear Control of Brushless DC Motors for Direct-Drive Robotic Applications" (1990), has garnered 145 citations and stands as a landmark in the field, addressing the challenging nonlinear phenomena of reluctance variations and magnetic saturation that compromise motor performance in high-precision robotic systems. This work laid important groundwork for reliable direct-drive servo systems where traditional linearized models fall short. Earlier, Hemati made a significant methodological contribution with his 1986 paper on automated symbolic derivation of robotic manipulator dynamics using MACSYMA, which earned 65 citations and offered researchers a powerful computational tool applicable to manipulators of arbitrary degrees of freedom. His sustained focus on BLDCM modeling and robust control extended into the 2000s, and his involvement with Drexel University's IMPAQT Center reflects a commitment to bridging advanced robotics research with intelligent manufacturing education and technology transfer. Together, his work represents a coherent and impactful body of research at the intersection of motor control, nonlinear dynamics, and applied robotics.