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The large time-delay objects widely exist in industry process and they are difficult to be controlled especially when control coefficient is bigger than 0.5, a hybrid control method with on-line parameters adjustment is adopted to maintain the pressed air pressure of a coal mine at a const value. The Fuzzy-PID controller discussed here has a one-order feedback loop which can decrease lag time, for...
Signal process method is very important in welding automation and arc sensor is a kind of welding-sensor which works on the relationship between welding current and arc length. The using of Wavelet transform (WT) for detecting of welding gun slop with arc sensor is discussed in this paper. Sensor structure is introduced at first, and then Wavelet transform (WT) is induced into its signal processing...
Traditional method used to determine best welding parameters is depended mainly on experience and is lack of precision. So a new hybrid method combined GA with BP to search proper arc-welding parameters automatically is proposed here, the main contents are described as follows. Testing schema is designed according to orthogonal form, data used for later work are obtained at first; then a BP neural...
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