文章基本信息

标题：Feedforward Control of the Temperature Field in an Experimental Annealing Furnace
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作者：L. Jadachowski ; A. Steinboeck ; A. Kugi 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2017
卷号：50
期号：1
页码：13790-13795
DOI：10.1016/j.ifacol.2017.08.2068
语种：English
出版社：Elsevier
摘要：AbstractTwo feedforward control strategies for an experimental annealing furnace equipped with electrically powered infrared (IR) lamps are developed and compared. For the first controller, the optimal time evolution of the electric power supplied to IR-lamps is computed from a dynamic optimization problem. This ensures optimal temperature trajectories and temperature uniformity in the specimen fillet. The second controller is based on an amplified adjustment of the steady-state power distribution obtained from static optimization at an operating point. Here, the temperature uniformity during transients is traded-off against the computing time while still ensuring the best temperature uniformity at the final temperature level. For both strategies, a tailored control-oriented reduced-order model of the 2D spatial-temporal temperature evolution is used. The evaluation of the feedforward controllers is carried out with an experimentally validated simulation model. The temperature non-uniformity during transients is less than 0.9 % and reduces to 0.3 % of the setpoint value at the steady state.
关键词：KeywordsOptimal feedforward controlOptimal operating pointDistributed-parameter systemsParabolic quasilinear PDEModel reductionFE method