Modified Smith Predictor Based Parallel Cascade Control Strategy for Non-Self Regulating Time Delay Processes

2011 ◽  
Vol 44 (8) ◽  
pp. 596-607 ◽  
Author(s):  
Srinivasan Uma ◽  
Ambati Seshagiri Rao ◽  
JeongTai Kim ◽  
ChangKyoo Yoo
Keyword(s):  
Time Delay ◽  
Control Strategy ◽  
Smith Predictor ◽  
Cascade Control ◽  
Modified Smith Predictor

scholarly journals Modified Smith Predictor Based on H 2 and Predictive PI Control Strategy

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Shiqing Sang ◽  
Pengcheng Nie
Keyword(s):  
Time Delay ◽  
Control Strategy ◽  
Control Algorithm ◽  
Control Method ◽  
Order Approximation ◽  
Current System ◽  
Smith Predictor ◽  
Pi Control ◽  
Delay Term ◽  
Modified Smith Predictor

In this paper, a new type of modified Smith predictor based on the H 2 and predictive PI control strategy is proposed. The modified Smith predictor not only has H 2 robust performance but also has a similar predictive PI control structure. By introducing a time delay term, the modified Smith predictor controller overcomes the shortcoming that the conventional control algorithm can only use the low-order approximation of time delay term to design the control algorithm. The modified Smith predictor controller’s output is related to the current system error and related to the output in a period before the controller. Simultaneously, the modified Smith predictor controller is applied to conventional process systems based on dynamic optimization estimation in the case study to show absolute superiority over the nonpredictive control method (such as the classical PID control method).

Performance Analysis of Modified Smith Predictor for Integrating and Time-Delay Processes

2011 ◽  
Vol 53 (4) ◽  
pp. 261-270
Author(s):  
G. Saravana Kumar ◽  
R.S.D. Wahidabanu ◽  
K.G. Arun Raajesh
Keyword(s):  
Time Delay ◽  
Performance Analysis ◽  
Smith Predictor ◽  
Modified Smith Predictor
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