Identifying System Properties through Structural Inference using In-Service Measurements

摘要

In many cases properties of offshore systems cannot be easilyrnmeasured, yet knowledge thereof may be of importance to ensure safernoperations. In this paper a data analysis technique is presented tornidentify these system properties through measurements of loads andrnresponses. The theory is tested using in-service measurements of anrnFPSO. Wave and motion measurements are used to identify the loadrncase that the FPSO operates in. Using a strongly simplified model tornrelate load and response, the procedure is able to achieve goodrnaccuracy. Multiple improvements to the method are discussed.