FN Archimer Export Format PT C TI Comparison of Time domain Control Law for a Piston wave Absorber BT AF CLEMENT, Alain MAISONDIEU, Christophe AS 1:1;2:1; FF 1:;2:; C1 Ecole centrale Nantes, France C2 ECOLE CENT NANTES, FRANCE SE PDG-REM-RDT-LCSM UR https://archimer.ifremer.fr/doc/00203/31437/29833.pdf LA English DT Proceedings paper AB In this paper, we suggest two causal non-ideal approximations of this ideal non-causal controller. These time-domain absorbing relations differ in whether or not one knows a dominant frequency of the incident wave train to be absorbed. Their performances are compared to the absorption efficiency of the low frequency asymptotic Sommerfeld relation. Preliminary results of this study were already presented in Maisondieu and al. (1993). PY 1993 CT 1993 European Wave Energy Symposium. Proceedings of an International Symposium held in Edinburgh, Scotland. 21 - 24 July 1993. 1994. ISBN 0-903640-84-8. Publication No EUR 15571 EN pp. 117-122 ID 31437 ER EF