Slab resolvers are used widely in motion control applications for the feedback of velocity and rotational position. The term ‘slab resolver’ refers to a resolver with a large diameter proportionate to its axial height. Normally, slab resolvers also have a large bore to contain through shafts, hydraulic pipes, electrical cables etc.
Slab resolvers have a long track record for offering reliable position and velocity feedback as well as commutation without being restricted by the environmental restrictions imposed by other sensing methods. The vibration and shock levels encountered in military, aerospace, or heavy industrial equipment are usually within the operating envelope for many of the slab resolvers.
Zettlex Technology vs Slab Resolvers
Along with RVDTs, RVITs, synchros, and Inductosyns™, slab resolvers are considered a ‘traditional’ form of inductive position sensor, and have many disadvantages when compared with their latest equivalents. Zettlex IncOders are based on the same primary physics as slab resolvers and so offer the same high levels of strength. Using laminar constructions with printed circuits as opposed to traditional large spools of wire, IncOders are less expensive, more compact and lighter, providing a most favorable solution for engineers with much greater design and integration flexibility. Zettlex IncOders’ low height, large inner diameter and tolerance to misalignment make installation easy in applications such as gimbals mounts, pan and tilt pedestals, and rotary joints.