| 摘要 |
PROBLEM TO BE SOLVED: To take an interaction of a numerical model, a sub-structure and an actuator into account in a vibration test in which a response of a main- structure realized as the numerical model and a response of the sub-structure obtained by a shaking experiment are combined in real time in a computer. SOLUTION: An actuator 2 is set to a base 1. One end of a sub-structure 3 is fixed to the actuator 2 and the other end is fixed to the base 1. A force sensor 4 for measuring a force (f) applied to the sub-structure 3 is set between the actuator 2 and the sub-structure 3. A position sensor 5 for measuring a displacement (x) of the sub-structure 3 is also set. Outputs of the sensors 4 and 5 are inputted together with a shaking wave 6 to a computer 7. A response of a main structure 8 to be realized as a numerical model is calculated inside the computer 7 with the use of these inputs. Based on the calculation result, a compensator 9 calculates with taking an interaction of each constitution element into account, and outputs a command signal (v) to the actuator 2 so that the sub-structure 3 shows a desired response.
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