Actuator for electromagnetic valve control has an arrangement for determination of actuator position without risk of displacement of the signal generator or demagnetization of a permanent magnet

摘要

Actuator for electromagnetic valve control has two electromagnets between which actuator components oscillate and a base conducting plate. A magnetic field signaler (10.1) and a Hall sensor (10.2) enable determination of the position of an oscillating anchor plate (5.1). The signaler, which does not oscillate, forms a magnetic circuit with the anchor plate and the base conducting plate. The Hall sensor senses the magnetic flux intensity within the circuit, which is dependent on the position of an oscillating actuator part. The magnetic field generator is a permanent magnet.