Abstract
To provide more tuning freedom in the trade-off between overshoot and settling times of PID controlled stages, a PID controller with a fractional order integrator is studied. The fractional order integrator has two parameters dependent on the order ¿. Namely, the corner frequency ¿i(¿) and the gain kp(¿). Both parameters are designed such that robust stability is maintained independent on the choice of ¿. It will be shown that the fractional order integrator can be approximated by a low-order loop shaping filter. As such, insights from fractional order control can be used by the control engineer to aid his tuning tasks. The controller is tested on a wafer stage system.
Original language | English |
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Title of host publication | Proceedings of the American Control Conference (ACC 2014), 4-6 june 2014, Portland, Oregon, United States. |
Place of Publication | Portland, OR |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 978-983 |
DOIs | |
Publication status | Published - 2014 |
Event | 2014 American Control Conference (ACC 2014), June 4-6, 2014, Portland, OR, USA - Hilton Portland & Executive Tower , Portland, OR, United States Duration: 4 Jun 2014 → 6 Jun 2014 http://acc2014.a2c2.org/ |
Conference
Conference | 2014 American Control Conference (ACC 2014), June 4-6, 2014, Portland, OR, USA |
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Abbreviated title | ACC 2014 |
Country/Territory | United States |
City | Portland, OR |
Period | 4/06/14 → 6/06/14 |
Internet address |