Modeling and Control Approach to Coupled Tanks Liquid Level System Based on Function-Type Weight RBF-ARX Model

作者：Zhou, Feng; Peng, Hui^*; Zeng, Xiaoyong; Tian, Xiaoying; Wu, Jun

来源：ASIAN JOURNAL OF CONTROL, 2017, 19(2): 692-707.

DOI：10.1002/asjc.1393

• Coupled tanks system
• liquid level control
• function-type weight RBF network
• model predictive control
• real-time control

A multi-input multi-output (MIMO) FWRBF-ARX model, which adopts radial basis RBF) neural networks with function-type weights (FWRBF) to approximate the coefficients of the state-dependent AutoRegressive model with eXogenous input variables (SD-ARX), is utilized for describing the dynamics of a coupled tanks liquid system. Based on local linearization information of the MIMO FWRBF-ARX model, a predictive control strategy is proposed. In the algorithm, the control actions of the model predictive control (MPC) are calculated based on the local linearization of the MIMO FWRBF-ARX model at current working point. Real-time control experiments are carried out on the coupled tanks liquid system. The detailed comparative experiments demonstrate the feasibility and effectiveness of the proposed modeling and model-based control strategy for the coupled tanks plant.

• 单位
  长沙理工大学; 中南大学