| 摘要 |
<p>A health monitoring arrangement for a solenoid (36), the arrangement comprising:
- an armature (40) for coupling to the solenoid, the armature being displaceable proportional to a driving current applied to the solenoid,
- a monitoring coil (42) wound around the armature such that the armature is displaceable relative to the monitoring coil,
- a voltage monitor (44) coupled to the monitoring coil to generate a voltage signature in respect of the solenoid that is proportional to the armature displacement, and
- analysing means (48) to analyse the voltage signature to determine the health of the solenoid. Also a method of monitoring the health of a solenoid.</p> |
