Variable Reluctance Resolvers

Ducommun variable reluctance resolvers (VRRs) are highly reliable Brushless Resolvers without rotary transformers. Unlike conventional resolvers, the VRRs have both primary and secondary windings in the stator and no windings on the rotor. This offers significant advantages in price, weight, and envelope dimensions.

The VRRs are mechanically and electrically compatible with traditional brushless resolvers. They provide accurate absolute positioning or velocity feedback and can be offered as single speed and multi speed designs. Without a rotary transformer and with fewer parts, the VRRs are extremely reliable and compact feedback devices for harsh environments.

Ducommun offers different stator and rotor cores designs depending on the required accuracies and mounting dimensions. Custom designs are available on request.