发明名称 |
MOLTEN-METAL SURFACE LEVEL CONTROLLER, METHOD, AND PROGRAM FOR CONTINUOUS CASTING MACHINE |
摘要 |
PROBLEM TO BE SOLVED: To effectively suppress periodic variation in molten-metal surface level in a casting mold.SOLUTION: A molten-metal surface level controller for a continuous casting machine includes an addition point 101, an opening arithmetic part 102, an addition point 103, and a correction quantity arithmetic part 104. The correction quantity arithmetic part 104 includes: a delay part 104a which delays an opening command "u" output from the molten-metal surface level controller C; an arithmetic part 104b which receives a detection level "y" and outputs a result of an operation using a discrete reverse transfer function model of a nominal model P(s) of a molten-metal surface level variation process model; an addition point 104c which outputs a disturbance estimated value d^ which is a difference between the output from the arithmetic part 104b and the output from the delay part 104a; and a processing part 104d which receives the disturbance estimated value d^ output from the addition point 104c and outputs an opening correction quantity "v". Then the processing part 104d functions as a band-pass filter 105 which passes a specific frequency range through and an m-step ahead predictor 106. |
申请公布号 |
JP2014111267(A) |
申请公布日期 |
2014.06.19 |
申请号 |
JP20120266278 |
申请日期 |
2012.12.05 |
申请人 |
NIPPON STEEL & SUMITOMO METAL |
发明人 |
NAKA ATSUKI |
分类号 |
B22D11/18;B22D11/16;G05B11/36;G05B13/02;G05D9/12 |
主分类号 |
B22D11/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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