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Vol. 176, Issue 8, August 2014, pp. 43-48




A Novel Forging Hammerhead Displacement Detection System
Based on Eddy Current Sensor

ZHANG Chun-Long, CHEN Zi-Guo

Department of Electronic Engineering, Nantong Vocational College, Nantong 226007, China

E-mail: clzhangnt@163.com



Received: 9 June 2014 /Accepted: 31 July 2014 /Published: 31 August 2014

Digital Sensors and Sensor Sysstems


Abstract: For strong vibration, high temperature and dust in the forging site, a displacement detection system based on eddy current sensor is proposed to monitor the size of forgings online in this paper. Equidistant grooves are machined in the vertical direction on the side of hammerhead and the eddy current sensor probe is installed opposite the grooves in the rack. The hammerhead displacement can be obtained with output voltage signal according to hammerhead moving process. The feasibility of the proposed system is determined based on the magnetic field characteristics analysis of groove specimen surface using Ansoft software. The mathematical model of the displacement measurement is established through experiments on the processed metal plate. Experimental results show that the novel displacement detection system is feasible and accurate position of forging hammerhead can be obtained.


Keywords: Hydraulic forging hammer, Eddy current sensor, Displacement measurement.


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