| 摘要 |
An installation for study of free vibrations of a mechanical system with two degrees of freedom includes a base with controlled screw-props, beam fixed on the base at the middle and normally to the base, holder connected to the beam through lift mechanism with electric motor, on the holder, through digital force sensor, the upper end of the spring is fixed, on the force sensor a laser pointer is fixed, its horizontal ray falls on discrete light-sensitive ruler that is fixed vertically on the other beam fixed on the base near the spring. On the lower end of the spring that is placed vertically first load is fixed, to that one, through the second spring, the second load is fixed, laser pointers are fixed on the loads. |
