Hydraulic motor comprising a position transducer.

摘要

A fluid motor includes a piston (14) and rod (16) slidable within a cylinder (12). A bore (17) extends coaxially into the piston and rod. A hollow cylindrical support tube (22) is fixed at one end to the cylinder and is received bv the bore. A ferromagnetic rod (26) has one end fixed to the piston and rod and slides within the support tube (22). A primary (52) and two unequal length secondary transformer windings (54, 56) are wrapped around the support tube to sense the relative position of the piston and cylinder.