| 摘要 |
A lifting device comprises a support element, a lifting arm which is pivotably connected to the support element, and an actuator which is pivotably connected to the lifting arm and the support element for raising and lowering the lifting arm. A load cell is also provided for outputting a load signal corresponding to a load imparted to the actuator, a first torque sensor is provided for outputting a first torque signal corresponding to a first torque imparted at at least one of the pivot between the lifting arm and the support element and along the lifting arm, and a second torque sensor is provided for outputting a second torque signal corresponding to a second torque imparted at at least one of the pivot between the actuator and the support element, the pivot between the actuator and the lifting arm and along the actuator. A displacement sensor for outputting a displacement signal corresponding to a displacement of the actuator is included, and calculation means is provided for calculating a weight at a distal end of the lifting arm based on the distributed load signal, first and second torque signals, and the displacement signal.
|
