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Self-Tuning pH Control in Dyeing

机译:染色中的自调节pH值控制

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摘要

pH control has received considerable attention in dyeing processes because of its critical role in quality assurance. In dyeing, pH exhibits strong nonlinearity and time-varying behavior, thus increasing the difficulties of control by conventioanl means. This necessitates the creation of a controller that adapts itself to changing system parameters, and a new approach involving a self-tuning proportional-integral=derivative (PID) controller is proposed. The gains of the PID controller are automatically tuned by an estimated parameterized model, which is updated by input and output sequences. The siumulation results illustrate that the cotroller can bring the pH form any initial value to any other value of ra smiplified dyeing process. The approach is expected to achieve the same results in practical dyeing due to its feature of self-tunig and robustness. Hence an operator can manipulate pH control even without knowing the design philosophy.
机译:由于pH控制在质量保证中起着至关重要的作用,因此它在染色过程中受到了广泛的关注。在染色中,pH表现出很强的非线性和随时间变化的行为,因此增加了通过常规方法进行控制的难度。这就需要创建一个适应于变化的系统参数的控制器,并提出了一种涉及自整定比例积分=微分(PID)控制器的新方法。 PID控制器的增益由估计的参数化模型自动调整,该模型由输入和输出序列更新。结果表明,cotroller可以将pH值从任何初始值提高到ra简化染色过程的任何其他值。由于该方法具有自调节和坚固的特点,因此有望在实际染色中获得相同的结果。因此,即使不了解设计原理,操作员也可以操纵pH控制。

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