CAJ | 학술논문

针对液压自动厚度控制(AGC)系统中轧辊偏心信号的补偿问题,提出一种基于自适应小波阈值去噪算法的补偿方法. 该方法根据噪声在小波变换下的特性自适应地确定小波分解的阈值,将去噪信号的信噪比作为性能指标,采用黄金分割法进行寻优,得到最优的阈值参数. 仿真结果表明,该方法比原有的阈值去噪方法效果更佳,对液压AGC系统中轧辊的偏心信号具有良好的补偿效果.
침대액압자동후도공제(AGC)계통중알곤편심신호적보상문제,제출일충기우자괄응소파역치거조산법적보상방법. 해방법근거조성재소파변환하적특성자괄응지학정소파분해적역치,장거조신호적신조비작위성능지표,채용황금분할법진행심우,득도최우적역치삼수. 방진결과표명,해방법비원유적역치거조방법효과경가,대액압AGC계통중알곤적편심신호구유량호적보상효과.
To solve the problem of compensation of roll eccentricity signal of hydraulic automatic gauge control(AGC) system, a new method based on adaptive threshold de-noising method is proposed. The new method can self-adaptively decide the threshold of wavelet analysis, and make the SNR as a function of the parameter of the filter to acquire the optimal threshold parameter using golden section method. Simulation shows that the result of de-noising with this new method is much better than the original method and have a better result on the compensation of roll eccentricity signal on hydraulic AGC system.