Inductive position measuring system or resolver - uses amplifiers and integrator to determine amount and direction of error voltage

摘要

An inductive position measuring system such as a resolver determining the amount and direction of error voltage uses operational amplifier and an integrator. One half period of the non-inverted error voltage and the other half period of the inverted error voltage are integrated up-slope for a whole period. The error voltage is again integrated down-slope. The operational amplifier is connected to an integrator (3) connected to logics (5) via an inverting operational amplifier (4). The logics (5) are connected to a store (7). The store input side is connected to an actual value counter and the store output side to programmable frequency dividers.