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In this paper, we design a reference profile to minimize the resonance vibration caused by fast seeking and settling control. Furthermore, we propose a new state space disturbance observer. The proposed disturbance observer augmented the integration of position compensates the offset of constant velocity region as well as the uncertain and unknown bias. The proposed control scheme is validated by...
This paper presents fast servo track writer seek control for unknown bias compensation and minimum resonance excitation. An add-on type discrete-time disturbance observer is also employed to obtain uniform settling performance in the presence of disturbance. To prevent a chattering effect due to the unstable zero dynamics of servo track writer, we propose a new disturbance observer dynamics. A two-degree-of-freedom...
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