硬盘自伺服刻写模型特性研究

Research on the Characteristic of the Model of Self-servowriting in Hard Disk

自伺服刻写是解决伺服信息刻写问题的良好方案。详细讨论了自伺服刻写模型及其特点,指出定位准确度是衡量自伺服刻写方案好坏的重要指标。设计了3种控制器来控制自伺服刻写过程,实验数据表明了自伺服刻写中定位准确的重要性。重点指出鲁棒控制器能够很好地抵御外部扰动,保障自伺服刻写过程的精确度。

Self-servowriting is a good method which deals with servo information writing. This paper analyzed the characteristic of servo model. It shows that position precision is the most important criterion to the validity of self-servowriting. In the paper three different controllers were designed to centrol the self-servowriting process. The experiment data shows the importance of position precision in self-servowriting. This paper indicated the robust controller can resist outer disturbance and provide the position precision in self-servowriting process.