Application of fuzzy adaptive control to a MIMO nonlinear time-delay pump-valve system

作者：Lai, Zhounian; Wu, Peng; Wu, Dazhuan^*

来源：ISA Transactions, 2015, 57: 254-261.

DOI：10.1016/j.isatra.2015.01.010

• Pump-valve system
• Nonlinear MIMO system
• Fuzzy adaptive method
• Smith predictor

In this paper, a control strategy to balance the reliability against efficiency is introduced to overcome the common off-design operation problem in pump-valve systems. The pump-valve system is a nonlinear multi-input-multi-output (MIMO) system with time delays which cannot be accurately measured but can be approximately modeled using Bernoulli Principle. A fuzzy adaptive controller is applied to approximate system parameters and achieve the control of delay-free model since the system model is inaccurate and the direct feedback linearization method cannot be applied. An extended Smith predictor is introduced to compensate time delays of the system using the inaccurate system model. The experiment is carried out to verify the effectiveness of the control strategy whose results show that the control performance is well achieved.

• 出版日期2015-7
• 单位浙江大学