科研之友
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摘要
One approach in servo control to achieve a high track density in hard disk drives is to minimise the H-2 norm from disturbances to position error signal. The H-2 performance optimisation is then deemed as a matter of great significance. This paper presents an integrated design method involving plant modification and controller design sequentially to achieve the H-2 performance requirement. A linear matrix inequality-based approach is developed for the plant damping ratio modification using the plant output. The proposed model modification method is then applied to the voice coil motor plant in hard disk drives, followed by the optimal H-2 controller design using the Riccati equation method with the modified plant. It turns out that the modified plant leads to better H-2 performance, stability margins than the original plant.
- 出版日期2016-2-17
- 单位南阳理工学院; 华南理工大学; 浙江纺织服装职业技术学院
