Optimization design of the coil of the eddy current sensor

Tiecheng Pu; Shangchun Fan

doi:10.1117/12.717781

30 October 2006 Optimization design of the coil of the eddy current sensor

Tiecheng Pu, Shangchun Fan

Proceedings Volume 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation; 63580Y (2006) https://doi.org/10.1117/12.717781
Event: Sixth International Symposium on Instrumentation and Control Technology, 2006, Beijing, China

Abstract

An eddy current sensor is usually used to measure the departure of a shaft from its axes, in order to avoid destroying the system because of collision. The design of the coil as the sense organ of an eddy current sensor is to search a set of proper sizes (includes the outer radius, the inner radius and tallness of the coil) in which the quality factor and the grads of magnetic field strength is great as soon as possible but the length of the lead is not much long. So an optimization function is introduced here for efficient design. This function is direct ratio with the quality factor of the core and the magnetic grads product by the coil and inverse ratio with the lead length. The proportions of three parameters can be changed according to the instance. When the value of the function reaches the maximum, the sizes of coil are the anticipant optimal sizes and the integration capability of the coil is at the high-point. To search the maximum of the function, the genetic algorithm is adopted. The simulation result by Matlab proves the practicability of the method.

Citation Download Citation

Tiecheng Pu and Shangchun Fan "Optimization design of the coil of the eddy current sensor", Proc. SPIE 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation, 63580Y (30 October 2006); https://doi.org/10.1117/12.717781

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