| 摘要 |
PURPOSE:To enable accurate control of a torque actuator and a shaft horsepower actuator, by compensating mutual interference between a torque detection output and an axial tension detection output in a circuit for extracting the outputs. CONSTITUTION:When an axial tension detection output of a torque axial tension cell 1 is extracted with a closed loop control circuit 9B, a signal is fetched from the axial tension detection output with an auxiliary circuit 15A. Moreover, a signal of the auxiliary circuit 15A is adjusted in the level with an adjustor 16A. Then, the signal of the same level as the torque detection output generated in the torque axial tension cell 1 when only the axial tension alone is loaded to a test piece 3, namely the torque detection output due to mutual interference is fetched. The signal is applied to a closed loop control circuit 9A opposite in the polarity to the torque detection output of the torque axial tension cell 1. Therefore, the torque detection output generated by mutual interference is canceled to compensate for the mutual interference. The torque detection output of the torque axial tension cell 1 is corrected likewise when extracted with the circuit 9A. |
