SBIR Phase I: Commutational Ramp Load Disk Drive Actuator

SBIR 第一阶段：换向斜坡负载磁盘驱动执行器

• 批准号: 0945905
• 负责人: Matthew Green
• 金额: $ 14.88万
• 依托单位: Bluewater Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0945905&HistoricalAwards=false
• 关键词: SBIR; Phase; Commutational; Ramp; Load

This Small Business Innovation Research (SBIR) Phase I project develops a unique and transformative ramp load hard disk drive actuator that provides significant improvements over existing ramp load technology by increasing performance and reducing costs. A ramp is used to park the read/write heads of the disk drive actuator to avoid head/disk impact due to an external shock to the drive. The project activity consists of applied research and design of a new and unique commutational disk drive actuator that performs the ramp load/unload and seeking operations for the arm of a hard disk drive. The commutational actuator is a synergistic combination of a magnet/coil assembly, magnetic bias feature, and ramp. The commutational actuator is of reduced size and cost compared to conventional ramp load actuators that are currently used. The reduced size and cost are facilitated by requiring the actuator arm to travel through a magnetic transition zone which presents an uncontrollable, singular region within the actuator arm sweep angle on the ramp. To promote travel through the uncontrollable, singular region, a special head loading/unloading closed-loop control algorithm that will be developed to provide failsafe operation through this transition zone.The broader impact/commercial potential of this project is immediate and long-term. The immediate commercial potential is the specific application to the 500 million units per year disk drive market for computers, servers, data backup systems, communication technologies and many consumer products such as DVRs and cameras. The commutational actuator is expected to have a direct commercial impact exceeding $100 million per year, based on a realized disk drive manufacturing cost savings of $0.20 per drive. It will also enable reduction in size of the disk drive assembly, thus helping in further miniaturizing the hard disk drive without impacting performance.

该小型企业创新研究（SBIR）第一阶段项目开发了一种独特的变革性斜坡加载硬盘驱动器致动器，通过提高性能和降低成本，对现有斜坡加载技术进行了重大改进。斜坡用于停放磁盘驱动器致动器的读/写磁头，以避免由于对驱动器的外部冲击而导致的磁头/磁盘碰撞。该项目活动包括应用研究和设计一种新的独特的交换式磁盘驱动器致动器，用于硬盘驱动器臂的斜坡加载/卸载和搜索操作。换向致动器是磁体/线圈组件、磁偏置特征和斜坡的协同组合。与目前使用的常规斜坡负载致动器相比，换向致动器具有减小的尺寸和成本。通过要求致动器臂行进通过磁性过渡区来促进减小的尺寸和成本，该磁性过渡区在斜坡上的致动器臂扫掠角内呈现不可控的奇异区域。为了促进通过不可控的奇异区域的旅行，将开发一种特殊的头部加载/卸载闭环控制算法，以通过该过渡区提供故障安全操作。该项目的更广泛的影响/商业潜力是直接和长期的。直接的商业潜力是每年5亿台磁盘驱动器市场的具体应用，用于计算机，服务器，数据备份系统，通信技术和许多消费产品，如DVR和相机。根据已实现的每个驱动器0.20美元的磁盘驱动器制造成本节约，预计换向致动器每年将产生超过1亿美元的直接商业影响。它还将能够减小磁盘驱动器组件的尺寸，从而有助于进一步简化硬盘驱动器而不影响性能。