Development of non-conventional instrument transformers (NCIT) using smart materials

2016 Joint IMEKO TC1-TC7-TC13 Symposium: Metrology Across the Sciences: Wishful Thinking?

Nikoli, Bojan^1 ; Khan, Sanowar^1 ; Gabdullin, Nikita^1

City University London, Northampton Square, London

EC1V 0HB, United Kingdom^1

关键词: Linear variable differential transducers;    Magnetic shape memory alloys;    Mechanical stress;    Non-conventional instrument transformers;    Shape change;    Voltage output;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/772/1/012065/pdf
DOI  :  10.1088/1742-6596/772/1/012065

来源: IOP

【 摘 要 】

In this paper is presented a novel approach for current measurement using smart materials, magnetic shape memory (MSM) alloys. Their shape change can be controlled by the application of magnetic field or mechanical stress. This gives the possibility to measure currents by correlating the magnetic field produced by the current, shape change in an MSM- based sensor and the voltage output of a Linear Variable Differential Transducer (LVDT) actuated by this shape change. In the first part of the paper is presented a review of existing current measurement sensors by comparing their properties and highlighting their advantages and disadvantages.