SBIR Phase II: Commutational Ramp Load Disk Drive Actuator

这个小企业创新研究（SBIR）二期项目将设计、制造、测试和验证一个完全可操作的原型磁盘驱动器，该磁盘驱动器包含一个换向斜坡负载执行器（CRLA）。CRLA是一种独特的变革性磁盘驱动器驱动器，通过提高性能和降低成本，对现有的驱动器技术进行了重大改进。研究目标包括对CRLA组件进行系统的分布式参数设计，量化其固有参数和性能特征，设计和综合鲁棒轨迹和控制算法以满足坡道装卸要求，验证坡道装卸过程的可重复性和可靠性。CRLA设计需要通过一个磁过渡区，该磁过渡区在执行器扫角的斜坡上的一个位置呈现输入奇点，这是由零扭矩因素造成的。为了促进匝道上的行驶，并通过匝道上输入奇点附近的区域，将开发一种鲁棒闭环控制算法，该算法将通过过渡区提供故障安全的匝道加载/卸载操作。预计该研究将导致技术上健全和坚固的CRLA原型执行器，这将提供显着的性能改进和成本节约。该项目的广泛影响/商业潜力是即时和长期的。直接的商业潜力是将该技术具体应用于目前每年5.5亿台的计算机、服务器、数据备份系统、通信技术和许多消费产品（如数字录像机）的磁盘驱动器市场。CRLA技术预计将为每个磁盘驱动器节省0.17至0.47美元的磁体、线圈和闩锁材料成本。通过减少产品责任、保修和退货成本，实现了额外的成本节约。这项技术将通过制造成本更低、性能更高的消费产品，为社会带来直接利益。这一创新将增强对设备的科学和技术理解。通过单一区域控制？在柴油发动机和各种军事防御和安全技术中具有潜在的应用前景。其他更广泛的影响包括：(a)为学生提供切合实际的工程训练；(b)通过创造制造业就业机会改善当地经济；(c)让本科生参与，并编制项目单元，以加强本科课程；(d)与执业工程师合作；(e)立即将技术转移到磁盘驱动器行业。

This Small Business Innovation Research (SBIR) Phase II project will design, build, test, and validate a fully operational prototype disk drive incorporating a commutational ramp load actuator (CRLA). The CRLA is a unique and transformative actuator for disk drives that provides significant improvements over existing actuator technology by increasing performance and reducing cost. The research objectives consist of a systematic distributed parameter design for the CRLA components, quantification of intrinsic parameters and performance characteristics, design and synthesis of a robust trajectory and control algorithm to fulfill the ramp load/unload requirements, and verification of repeatability and reliability of the ramp load/unload process. The CRLA design requires travel through a magnetic transition zone which presents an input singularity at a location on the ramp within the actuator sweep angle resulting from a zero torque factor. To promote travel on the ramp and through the region near the input singularity point on the ramp, a robust closed-loop control algorithm will be developed that will provide failsafe ramp load/unload operation through the transition zone. It is anticipated that the research will lead to a technically sound and robust CRLA prototype actuator which will provide significant performance improvements and cost savings. The broader impact/commercial potential of this project is immediate and long-term. The immediate commercial potential is the specific application of the technology to the current 550 million units per year disk drive market for computers, servers, data backup systems, communication technologies, and many consumer products such as digital video recorders. The CRLA technology is expected to provide cost savings of $0.17 to $0.47 on magnet, coil, and latch materials for each disk drive. Additional cost savings are realized through a reduction in product liability, warranty, and return costs. This technology will provide a direct benefit to society via manufacture of a consumer product that is of a lower cost and higher performance. This innovation will enhance scientific and technological understanding of devices that require ?control through singular regions,? with potential application in diesel engines and various military defense and security technologies. Additional broader impacts include: (a) realistic engineering training for students; (b) improving local economy by creating manufacturing jobs; (c) involvement of undergraduate students and preparation of project modules to enhance undergraduate curriculum; (d) collaboration with practicing engineers; and (e) immediate transfer of technology to disk drive industry.