公开(公告)号：US3897681A

公开(公告)日：1975-08-05

申请号：US35925873

申请日：1973-05-11

Applicant: METTLER INSTRUMENTE AG

Inventor： MEIER EUGEN

IPC: G01G1/24 ,  G01G3/16 ,  G01G21/24 ,  G01L1/08 ,  G01L1/10

CPC classification number: G01G3/165 ,  G01G1/246 ,  G01G21/244 ,  G01L1/086 ,  G01L1/106 ,  Y10S73/01

Abstract: Improved force measuring apparatus of the one- or two-string type, including means for applying to the movable member of the apparatus a corrective force that compensates for non-linearities in the response of the apparatus over the full range of travel of the pan carrier member between the no-load and full-load positions, thereby to produce a linear variation in the resulting oscillation frequency with respect to load. In the one-string embodiment, linearization means are provided for applying to the oscillatory string means a corrective force that varies quadratically with the displacement of the movable member over its full range between the no-load and full-load positions. In the two-string embodiment, decoupling spring means are provided for independently connecting the two strings in opposite senses between the frame and pan carrier members. The aforementioned linearization means and/or temperature compensation means are also provided for improving the operation of the two-string embodiment.

Abstract translation: 一种或两串式的改进的力测量装置，包括用于向装置的可移动部件施加校正力的补偿力，该校正力补偿装置在盘托架的整个行程范围内的响应中的非线性 在负载和满载位置之间产生一个线性变化，从而产生相对于负载的振荡频率的线性变化。 在一弦实施例中，提供了线性化装置，用于向振荡线装置施加随着可动构件在空载和满载位置之间的整个范围内的位移而二次变化的校正力。 在双线实施例中，提供了去耦弹簧装置，用于在框架和盘托架构件之间以相反的方向独立地连接两根绳。 还提供了上述线性化装置和/或温度补偿装置，用于改善双线实施例的操作。