Device for position control

摘要

A device for position control including a first generator for delivering first and second identical signals dephased to each other by 90 DEG . A position pickup having two inputs connected to the first and second signals and an output for delivering a measurement signal whose phase is representative of the actual angular position of the component part to be controlled. A second generator for receiving a digital binary word instruction and for delivering an instructional signal of the same frequency as the first and second signals and having a phase representative of the desired angular position of the component part. A deviation signal generator connected to the output of the angular position pickup and the second generator for delivering a deviation signal representative of the dephasing between the measurement and instruction signals and a control device for controlling the angular position of the component as a function of the deviation signal.