基于扭摆法的三扭杆转动惯量测量装置

Research on Torsion Pendulum Based Triple Torsion Bars Device for Measuring Moment of Inertia

针对现有转动惯量测量装置中存在测量范围过小的问题,基于扭摆法研制了一台三扭杆测量装置。该装置通过两个可动插销实现单、双和三扭杆的切换,在一台装置上实现三台不同测量装置的功能。同时给出三种不同使用状态下的转动惯量测量范围的详细推导过程。结果表明与单、双扭杆测量装置相比,该装置的转动惯量测量范围明显提高,有效地解决了单、双扭杆存在的测量范围过小的问题,从而验证了该装置的有效性和实用性。

In view of the small measuring range of moment of inertia by current measuring devices, a new moment of inertia measuring device with triple - torsion bars based on torsion pendulum was proposed. The number of torsion bar could switch from single to double or triple through the two movable bolts and implement the function of three different devices. Meanwhile, the detailed deducing process for the measuring range of the moment of inertia at different using states was given. The result shows that the measuring range of this device has been significantly improved compared with single or double torsion bars devices, effectively solved the problems existing in other devices and verified the effectiveness and practicability about the measuring device.