Active damping in precision equipment using piezo


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Babakhani, Bayan and Vries de, Theo (2010) Active damping in precision equipment using piezo. In: 29th Benelux Meeting on Systems and Control, 30 March - 1 April 2010, Heeze, The Netherlads.

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Abstract:In this paper, the rotational vibration in the linearly actuated precision machines with low damping is discussed. This so called Rocking mode is e.g. caused by the compliance in the guiding system of a linear actuator and leads to a long settling time of the end-effector. Another problem occurs when a feedback motion controller is applied to the plant. Complex poles present in the loop transfer that are close to the imaginary axis due to low damping, are destabilized by a relatively small gain. A possible solution is actively damping the resonance frequencies. By flattening the resonance peaks, the bandwidth of the system can increase without the danger of instability. In turn, this allows for higher integral gain in the motion control algorithm.
Item Type:Conference or Workshop Item
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/73836
Conference URL:http://www.wfw.wtb.tue.nl/benelux2010/
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