Abstrac~In this digest, we present a numerical simulation to predict position erron of a hard disk drive undergoing a long seeking-and-settling process while experiencing a shock excitation. The seekingand-settling process consists of four segments: acceleration, coasting, deceleration, and settling. A 2-ms shock excitation is applied to each segment of the seeking-and-settling process respectively to evaluate the severity of the shock excitations to position erron. Simulation results lead to two significant conclusions.First, shock excitations occurring near the end of the seeking-anei-settling process are more detrimental causing larger position erron. Second, the ability to rapidly reduce the position erron relies on performance and properties of fluid-dynamic spindle motors.Index Terms-hard disk drives, position erron, shock excitations, fluid-dynamic spindle, seek-andsettling process.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.