Sensors keep pace with motion control needs

To meet higher productivity requirements, motion systems offer increasingly faster responses. However, this requires feedback devices that also respond more quickly. Two recent position transducers - enhanced versions of conductive-plastic position transducers and new versions of noncontact-inductive position transducers - provide reliable, continuous, and absolute position feedback for servo control systems in many applications. Monitoring position, they are used in plastic injection molding machines, medical infusion pumps, robots, hydraulic cylinders, crash-test dummies, and strip chart recorders.