| 摘要 |
PROBLEM TO BE SOLVED: To precisely calculate the vibration response by the electromagnetic force of an induction motor at a low calculation cost by providing an arithmetic unit for interface which analyzes and processes a calculation result outputted by an electromagnetic field analyzing device and inputs the result to the vibration analyzing device. SOLUTION: The arithmetic unit 1 is provided as the interface between the electromagnetic analyzing device 2 and vibration analyzing device 3. Namely, the arithmetic unit 1 processes an electromagnetic force in a spatial area by Fourier transformation, inputs electromagnetic forces of respective degrees of the space obtained as a result to calculate the frequency response of vibration, and evaluates the magnitude. And, the arithmetic unit 1 selects a component which affects the vibration response of a structure out of high frequency components of the electromagnetic force generated by the induction motor from momentary electromagnetic forces at respective positions of the structure outputted by the electromagnetic field analyzing device 2 and inputs it to the vibration analyzing device 3. Thus, only the spatial component which increases in vibration response is selected as an external force to calculate the time history response of the vibration. |
