Abstract
There is a class of typical nonlinear industrial process, which can be characterized by a first-order inertia plus pure delay model in an operating range, but the model parameters are different in different operating ranges. Usually, a set of Proportion Integration Differentiation (PID) controllers may be used to control the process, and the controllers have different parameters in different operating areas. However, the adjustment process of the PID controllers’ parameters is not an easy job in practice, and the control performance may also be not perfect. The Dahlin algorithm may provide very good control performance for the process, but its control performance may become very poor if the model parameters are not accurate and/or the input is constrained. Faced with this issue, this paper proposes an Operating-Range Scheduled Robust Dahlin Algorithm (ORSRDA) for the process control with input constraint, which is designed on the basis of a nominal first-order inertia plus pure delay model and the given parameters uncertainty. The process operating ranges are divided into pre-designed several zones according to the difference between output setting value and current output when a new setting appears. For each operating range, the parameters of ORSRDA are obtained by solving a min-max problem offline to guarantee the closed-loop system’s robust stability and acquire the best step-response control performance. To eliminate the steady state error, the integration control action is added into the ORSRDA when the system output is close to its setting value. The proposed method is applied to temperature control of an experimental electric furnace to demonstrate its effectiveness and implement procedure.
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Recommended by Associate Editor Niket Kaisare under the direction of Editor Myo Taeg Lim. This work was supported by the National Natural Science Foundation of China (61773402, 51575167, 61540037).
Xiaoying Tian obtained her M.Eng degree in Control Science and Engineering from Henan Polytechnic University, Jiaozuo, China, in 2015. She is currently working towards a Ph.D. in Control Science and Engineering at the Central South University, Changsha, China. Her current research interests are in complex systems modeling, optimization, and control.
Hui Peng received his B.Eng. and M.Eng degrees in control science and engineering from the Central South University, Changsha, China, in 1983 and 1986, and his Ph.D. degree in Statistical Science from the Graduate University for Advanced Studies, Japan, in 2003. He has been a Professor at the Central South University, Changsha, China, since 1998. His research interests include complex systems modeling, control and optimization; advanced control theory and intelligent automation system; industrial process control system development. Corresponding author of this paper.
Xuguang Luo received his B.Eng. and M.Eng degrees in control science and engineering from the Central South University, Changsha, China, in 2014 and 2017, respectively. His current research interests are in algorithm, embedded system and technology commercialization.
Shiyuan Nie received her B.Eng. and M.Eng degrees in control science and engineering from the Central South University, Changsha, China, in 2014 and 2017. Her research interests are in complex systems modeling, optimization and control.
Feng Zhou received his B.Eng., M.Eng, and Ph.D. degrees in control science and engineering from the Central South University, Changsha, China, in 2005, 2009, and 2017, respectively. His current research interests are in complex systems modeling, optimization and control.
Xiaoyan Peng received her B.S. and M.S. degrees in mechanical engineering and a Ph.D. degree in automatic control from Hunan University, Changsha, China, in 1986, 1989, and 2013, respectively. She is currently a Professor in the College of Mechanical and Vehicle Engineering, Hunan University. Her research interests cover control of mechatronic systems and safety analysis of autonomous vehicles.
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Tian, X., Peng, H., Luo, X. et al. Operating Range Scheduled Robust Dahlin Algorithm to Typical Industrial Process with Input Constraint. Int. J. Control Autom. Syst. 18, 897–910 (2020). https://doi.org/10.1007/s12555-017-0714-x
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DOI: https://doi.org/10.1007/s12555-017-0714-x