Abstract：Resolver and synchro are a type of angle position sensors based on electromagnetic induction, which widely used in automatic control or servomechanism. Their output signals are a series of AC voltage signals that change proportionally with the angle position. In order to measure or calibrate these signals, precision Angle Position Indicators (API) are required, which are very expensive with single function. We developed a precision angle position signal digital measurement system based on universal digitizers, and realized resolver and synchro signal measurement with 0.0001° resolution and 0.001°(k=2) uncertainty. The measurement system can be applied in metrology of Resolver/Synchro Simulator (RSS) or sensors, and related technologies can also be applied in design of domestically precision angle position indicators, has good application prospect.
2025, Vol. 46 
