| 摘要 |
The invention is provided with: a pressure detector (17) and an acceleration detector (13) that serve as a load-related parameter detector that detects a load-related parameter that is a parameter that represents a change occurring in a work machine when a load from outside acts; a displacement detector (15) and a rotation angle detector (18) that serve as a posture-related parameter detector that detects a posture-related parameter that is a parameter that represents the posture of the work machine; and a stress computation unit (41a) that on the basis of output values of the pressure detector (17), acceleration detector (13), displacement detector (15) and rotation angle detector (18), estimates the stress distribution of the work machine at the time of the output values. By means of this structure, an evaluation of stress at a desired position of the work machine is possible with a small number of sensors, enabling operation performance maintenance and cost reduction for the work machine. |
