| 摘要 |
A system is provided for tightening fasteners. The system has a tightening tool configured to apply torque to a fastener. In addition, the system has a strain sensor configured to sense a parameter of the fastener indicative of an elongation of the fastener. Additionally, the system has a stress sensor configured to sense a parameter of the fastener indicative of magnitude of the applied torque. The system further includes a controller configured to regulate the tightening tool based on a relationship change between the elongation and the magnitude of the applied torque
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