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Research On Two-Time-scale Model Predictive Control Algorithm

Posted on:2011-03-23Degree:DoctorType:Dissertation
Country:ChinaCandidate:J NiuFull Text:PDF
GTID:1118360302983886Subject:Control Science and Engineering
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Model predictive control (MPC) originated from industry. Because MPC can be used to deal with multi-input-multi-output system and the application of MPC is not so easy, MPC has been introduced to process industry extensively. The theoretical research about MPC is a little later than the application. MPC is a model based control algorithm, and the development of MPC theory is closely connected with the understanding of the model. This thesis focuses on one special kind of model, and puts forward a series of special MPC algorithms.The main contents and renovation points in this thesis include the following:(1) When the model has the state space form, the characteristic of the singular perturbation system is not only determined by the coefficient matrix, but also affected by the input matrix. And when the input matrix possesses a special form, the model can be decoupled according to the input.(2) In the view of the transfer function matrix form, the singular perturbation system can be divided into two special types: input two-time scale system and output two-time scale system. And the special model predictive control algorithms for each special systems are proposed. And the stability of each special model predictive control algorithm is discussed in the thesis.(3) We analyze the application of model predictive control on the supply chain management, and a kind of model predictive control algorithm with on-line identified demand model is put forward.(4) Considering the relationship between demand and price, and the pricing is introduced as a manipulate variable, because the price and the ordering can affect the inventory on different time scales. We put forward a kind of two-time scale model predictive algorithm for a supply chain unit under the assumption that price has more slow effects on the inventory than the ordering on the inventory. At the end of the thesis, we give some suggestions to the further research in this field.
Keywords/Search Tags:model predictive control, singular perturbation, two-time scale, supply chain management
PDF Full Text Request
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