RIA: Friction Compensation in Disk Drive Rotary Actuator Ball Bearings

9409413将研究在以前从未研究过的快速润滑和摩擦变化状态下运行的球轴承的梅斯纳摩擦建模和摩擦补偿。具体解决的将是盘驱动器致动器轴承在从与寻道模式相关联的高角速度快速减速之后立即在寻道模式中经历高频/低幅度振荡的情况。将设计和测试包含所得摩擦模型的自适应控制器、学习控制器和非线性控制器。***

9409413 Messner Friction modeling and friction compensation will be studied for ball bearings operating in regimes of rapid lubrication and friction changes which have not previously been investigated. Specifically addressed will be the conditions where a disk drive actuator bearing is undergoing high frequency/low amplitude oscillations in track-follow mode immediately after rapid deceleration from the high angular velocities associated with the track-seek mode. Adaptive, learning, and nonlinear controllers which incorporate the derived friction models will be designed and tested. ***