Data processing and experiment design for the restoring force surface method, part I: integration and differentiation of measured time data

The restoring force methods of system identification (which include the Masri/Caughey procedure), require the simultaneous measurement of acceleration, velocity and displacement data. A practical approach requires that one should measure one of these quantities and estimate the other two by numerical integration and/or differentiation. Various methods for achieving this are considered and their relative merits and demerits are assessed. © 1990.