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Key words£ºautomatic detection£» interface equipments£» circuit analysis£» rolling£» thickness£» computer control£» automatic gain control

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Abstract: A computer interface circuit for test of roll coarse position and its fine positionis described in this paper.The principle diagram of the circuit is given.Wehave mainly analysed each part,the principle of the circuit and its distinguis-hing features.Finally,an example which shows the application of this interfacecircuit to a hot-rolling mill hydraulic AGC system is given.

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