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首页> 外文期刊>ISA Transactions >Set point weighted modified Smith predictor for integrating and double integrating processes with time delay
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Set point weighted modified Smith predictor for integrating and double integrating processes with time delay

机译：设定点加权修改的Smith预估器，用于具有时间延迟的积分和双积分过程

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摘要

A simple method of designing the controllers for a modified form of Smith predictor is proposed for integrating and double integrating processes with time delay. The modified Smith predictor has two controllers, namely, a set point tracking controller and a load disturbance rejection controller for obtaining good set point tracking and load disturbance rejection, respectively. The set point tracking controller is designed using the classical direct synthesis method based on the process model without considering the time delay. The disturbance rejection controller is considered as a proportional-derivative (PD) controller and is designed using optimal gain and phase margin approaches. Set point weighting is considered for reducing undesirable overshoots and settling times in the modified Smith predictor. Guidelines are provided for selection of the desired closed loop tuning parameter in the direct synthesis method and the set point weighting parameter. The method gives significant load disturbance rejection performances. Illustrative examples are considered to show the performances of the proposed method. A significant improvement in control performance is obtained when compared to recently reported methods.
机译：提出了一种为改进形式的Smith预估器设计控制器的简单方法，用于对具有时滞的过程进行积分和双积分。改进的Smith预估器具有两个控制器，分别是设定点跟踪控制器和负载干扰抑制控制器，分别用于获得良好的设定点跟踪和负载干扰抑制。设定点跟踪控制器是基于过程模型使用经典的直接合成方法设计的，而没有考虑时间延迟。干扰抑制控制器被视为比例微分（PD）控制器，并使用最佳增益和相位裕度方法进行设计。考虑设置点加权以减少修改后的Smith预测器中的不良过冲和建立时间。提供了在直接合成方法中选择所需闭环调整参数和设定点加权参数的准则。该方法具有显着的负载干扰抑制性能。考虑了说明性示例以显示所提出方法的性能。与最近报道的方法相比，控制性能得到了显着改善。

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