(1. 東北大學軋制技術及連軋自動化國家重點實驗室，沈陽110006；
2. 本溪鋼鐵集團公司熱連軋廠，本溪117021)
摘 要: 熱軋帶鋼厚差診斷專家系統(tǒng)是基于傳感器型的在線實時專家系統(tǒng)，數(shù)據(jù)采集與處理系統(tǒng)是該專家系統(tǒng)的重要組成部分。精軋機組信號由傳感器采集后，需進行預處理。數(shù)據(jù)預處理包括三次預處理，一次預處理包括速度折算、溫度趨勢項消除，使影響厚差的各因素變量周期和幅值不經(jīng)常改變；二次預處理包括低通濾波和高通濾波；三次預處理是對低通濾波和高通濾波后的信號分別進行頻譜分析，得到特征參數(shù)并進行模糊處理。處理后的數(shù)據(jù)便可以用于厚差診斷專家系統(tǒng)的推理，以提高厚差專家系統(tǒng)的命中率。
關鍵字: 熱軋帶鋼；數(shù)據(jù)處理；厚差診斷；專家系統(tǒng)
（1. The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110006, P.R.China
2. Hot Strip Mill, Benxi Steel (Group) Co., Benxi 117021, P.R.China）
Abstract:Thickness Deviation Diagnosis Expert System (TDD-ES) is the real-time and on-line system based on sensors, the data acquisition and processing are the main portions of TDD-ES. Finisher signal needs to be pretreated after being collected by the sensor. The pretreatment include three steps, the first step is to be converted by speed and then by temperature, the second step includes low-pass filtering and high-pass filtering, the third step is to be analyzed by frequency spectrum for obtaining the characteristic parameters and then fuzzy processing them. The data after pretreatment can be used for the inference of TDD-ES so that the target rates can be improved.
Key words: hot rolled strip; data processing; thickness deviation diagnosis; expert system
