| 摘要 |
PURPOSE:To easily and correctly set the zero point of a steering handle and shorten the adjusting time by providing a hysteresis between the force applied to an elastic force and an detected output, slightly applying positive and negative displacements to the steering handle, and setting the middle point of detected outputs detected by the displacements to the zero point. CONSTITUTION:When a control box 21 is connected to a program control circuit 25 with a connector 27 and a command to set an adjusting mode is given, the program control circuit 25 is switched to the zero point adjusting mode. When an elastic body 12 is moved to the positive side of backlashes (a), (a') and a detection command is given from the control box 21, the program control circuit 25 receives its value S1. When the elastic body 12 is likewise moved to the negative side, its value S2 is received. The calculation (S1+S2)/2 is performed to obtain the zero point, and it is stored in a memory means 24. The steering force generated by the rotation of a steering handle 11 in the positive or negative direction is detected with the zero point thus set used as the base point thereafter. The zero point is easily and correctly set without performing the adjusting work at the time of assembling, and the efficiency of the adjusting work is improved. |
