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.
|Title of host publication||29th Benelux Meeting on Systems and Control|
|Subtitle of host publication||March 30 - April 1, 2010, Heeze, The Netherlands : book of abstracts|
|Editors||Gjerrit Meinsma, Han Stigter|
|Place of Publication||Wageningen, The Netherlands|
|Number of pages||1|
|Publication status||Published - 30 Mar 2010|
|Event||29th Benelux Meeting on Systems and Control 2010 - Heeze, Netherlands|
Duration: 30 Mar 2010 → 1 Apr 2010
Conference number: 29
|Conference||29th Benelux Meeting on Systems and Control 2010|
|Period||30/03/10 → 1/04/10|
- Active damping
Babakhani, B., & de Vries, T. (2010). Active damping in precision equipment using piezo. In G. Meinsma, & H. Stigter (Eds.), 29th Benelux Meeting on Systems and Control: March 30 - April 1, 2010, Heeze, The Netherlands : book of abstracts (pp. 74-74). Wageningen, The Netherlands: Wageningen University.