This letter improves short-span seeking performance of a recently proposed compensator based control system for a dual-stage servo actuator. Short-span seeking performance is improved by replacing a constant saturation non-linearity in the secondary loop of the dual-stage control system by a dynamic saturation non-linearity. This results in a significantly faster response of the secondary actuator and hence faster seeking times. The improvement in seeking times is most significant for short range seeks that are within the range of the secondary actuator. Experimental results comparing the performance of a dual-stage servo actuator with constant and with dynamic saturation in the secondary loop are presented.
|Translated title of the contribution||Augmentation of Short-Span Seeking Performance Using Dynamic Saturation|
|Pages (from-to)||81 - 83|
|Number of pages||3|
|Journal||IEEE Transactions on Magnetics|
|Publication status||Published - Jan 2008|