tailieunhanh - Model Predictive Control Part 14

Tham khảo tài liệu 'model predictive control part 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | MPC in urban traffic management 253 posteriori application is needed to force the constraints which may lead to suboptimal solution. In the early 2000 s the first results are published in the subject of MPC based traffic control. However these publications . Bellemans et al. 2002 Hegyi et al. 2003 are related to ramp metering and variable speed limit control of the freeway traffic management. MPC based urban traffic control approach is published by Tettamanti et al. 2008 . The paper consists theory realization and a real-word example. The main result is the possibility to overcome the disadvantage of the LQ problem mentioned above as the MPC method can take the constraints into consideration. These results constitute the basis of the chapter. The paper of Aboudolas et al. 2009 is published investigating large-scale traffic control problem and introducing the open-loop quadratic-programming control QPC as a possible method for optimal traffic management. The paper concludes that for the application of the QPC methodology in real time the corresponding algorithms may be embedded in a rollinghorizon model-predictive scheme which constitutes the part of future works. In 2010 as a development result of Tettamanti et al. 2008 the paper of Tettamanti Varga 2010 is published which introduces a distributed realization of an MPC based traffic control system. The publication s results will be also enlightened in detail in the chapter. 3. Urban traffic modeling Modeling and control are coherent notions in control theory as the model highly determines the applicable methods for control. In the previous chapter various control approaches were presented. All of them use an appropriate traffic modeling technique for functioning. Apparently the modern control theory based traffic management strategies apply the state space approach. The state space modeling is derived from the so called Store-and-forward model Gazis Potts 1963 which introduces a model simplification that enables