| 摘要 |
PURPOSE:To measure exactly a thrust working on a shaft by executing a prescribed adjustment by adding a bridge output by strain gauges stuck in the axial direction and in the peripheral direction on a revolving shaft, and an output which can adjust a sensitivity in proportion to a square of a revolving speed of the revolving shaft. CONSTITUTION:An output of a bridge 11 formed by eight strain gauges provided on the surface of a revolving shaft is applied to a strain amplifier 12. A revolving speed of the revolving shaft is detected by a revolving speed detector 13, and subsequently, brought to square operation by a revolving speed square operator 14, and its output is supplied to one input of an adder 16 through a sensitivity regulator 15. Also, an output of the strain amplifier 12 is also supplied to the other input of the adder 16, added to an output of the sensitivity regulator 15, and its result is fetched from an output terminal 17. Thereafter, when the sensitivity regulator 15 is adjusted so that an output value of the terminal in case when the revolving shaft has been set to the highest revolving speed becomes a value of the time when the revolving speed is ''0'', a thrust working on the revolving shaft can be measured exactly irrespective of the revolving speed of the revolving shaft. |
