| 摘要 |
A force sensing module comprising two or more load cells (27, 28) mounted vertically with output signals combined and adjustable to minimize longitudinal torque response. The force sensing module further comprises a vertical support for lifting and supporting a load, a support arm coupled to the vertical support for engaging and holding a load, first and second sets of strain gauges, spaced from each other and either in vertical or horizontal alignment with each other. The force sensing module also comprises first and second Wheatstone bridges (29, 30), wherein each Wheatstone bridge (29, 30) comprises one of the sets of strain gauges and at least one variable resistance (31, 32) coupled between the Wheatstone bridges (29, 30) with resistors (31, 32) adjustable to reduce the sensitivity of the Wheatstone bridges (29, 30) to torque applied to the sets of strain gauges through the support arm.
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