A model-based augmented PID algorithm |
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Authors: | K Ezra Kwok Michael Chong Ping Ping Li |
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Affiliation: | a Department of Chemical & Bio-Resource Engineering and Pulp & Paper Center, The University of British Columbia, Vancouver BC, Canada, V6T 1Z4;b Institute of Industrial Process Control, Zhejiang University, People's Republic of China |
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Abstract: | For complex control problems, advanced techniques, such as model-based predictive control may give better control performance than the common PID controller. However, the extra complexity and limited support of control software especially at the distributed control system (DCS) level, may prohibit the application of advanced algorithms. Also, implementing model based control often requires a higher level of programming than is readily available at the DCS level. This paper addresses this problem by providing a control algorithm utilizing multiple DCS PID blocks to implement a model-based predictive control strategy. The approach was tested on process simulations and the algorithm was able to provide control performance similar to that of generalized predictive control. |
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Keywords: | PID control Model-based predictive control Distributed control system |
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