MULTI-DEGREE-OF-FREEDOM FIXTURE FOR AUTOMATED RECIPROCAL FREQUENCY RESPONSE FUNCTION MEASUREMENTS

原文（中文）

System and methods for characterizing system response functions of a structure-under-test (SUT). One system includes a fixture coupleable at a coupling interface to the SUT and configured to hold the SUT at a known position and orientation relative to the fixture. The system includes exciter devices coupled downstream from the coupling interface at different locations and orientations and are configured to each apply an excitation force to the fixture. The system includes response sensors positioned at a known location and orientation relative to the fixture. Each response sensor is configured to sense a dynamic response, wherein the excitation force applied to the fixture by the exciter devices is transferred by the fixture to the SUT, and wherein the dynamic response measured by each of the response sensors is indicative of a reciprocal response of the fixture to the applied force.