| 摘要 |
A system for measuring the gap spacing between two magnetic members of an electromagnetic arrangement in which, for example, an electromagnet core is spacedly juxtaposed with a ferromagnetic armature or rail. The system provides a main magnetic sensor responsive to the induction in the gap whose spacing is to be measured and whose output is a function of both the gap spacing and the energization current of the electromagnetic. An auxiliary sensor, whose output is a function of the energization current, is employed to allow the two signals to be electronically combined by analog, digital or hybrid circuitry including a divider, to produce an output which is a function of the gap spacing free from dependence upon the energization current. |
