CURRENT-CONTROLLED/DRIVEN COMPENSATING/STRENGTHENING DEVICE

摘要

A current-controlled/driven compensating/strengthening device including a chamber, a driven piece, a coil and at least one compensator. The driven pie ce has a certain length and a shape corresponding to the shape of the interior of t he chamber. The driven piece is movably disposed in the chamber. The coil is arranged around the chamber and connected with a circuit for providing current for th e coil to drive and move the driven piece. The compensator is disposed on outer side o f the chamber. When the coil is powered on, the compensator serves to compensate a nd strengthen the magnetic line acting on the driven piece. Accordingly, the action force applied to the driven piece is strengthened.