RIA: Friction Compensation in Disk Drive Rotary Actuator Ball Bearings

9409413 Messner将研究在快速润滑和摩擦变化状态下运行的滚珠轴承的摩擦建模和摩擦补偿，这是以前没有研究过的。具体解决的将是磁盘驱动器执行器轴承在轨迹跟踪模式下经历高频/低振幅振荡的情况，该情况在与轨迹寻求模式相关的高角速度快速减速后立即发生。将设计和测试包含导出摩擦模型的自适应、学习和非线性控制器。＊＊＊

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. ***