| 摘要 |
<p>Apparatus for resetting the path of a member comprises a member and a position detector, fixed to a carrier via a system comprising at least one carriage. The position detector supplies at least one signal representing the distance between the member and the line to be followed in a given direction. The apparatus includes for each direction, a carriage for translation of the member in said direction, a position coder associated with the carriage, a servocontrol arrangement to position the member in said direction and switches for locking the position of the member relative to the carrier for making the member dependent either on a reference position with respect to the carrier, or on a reference position with respect to the line to be followed by cancelling out the distance variation signals from the position detector. The process steps carried out by the apparatus are also disclosed.</p> |
