Motor train unit power optimizing prediction and control method based on model

Abstract

The invention provides a motor train unit power optimizing prediction and control method based on a model. The motor train unit power optimizing prediction and control method comprises the following steps of: S1) taking a running speed of a motor train unit compartment and displacement between compartments as state variables, and establishing a motor train unit state equation after a motor train unit is lineated; S2) establishing a constraint condition in a running process of the motor train unit according to an effective tractive force borne during running of the motor train unit and an interaction force between the compartments; S3) according to the model after the motor train unit is lineated, the interaction force between the compartments, a prediction time domain and a control time domain, determining an optimizing control target function; and S4) solving the target function under the constraint condition so as to obtain optimizing control of motor train unit speed variation and power distribution in the running process of the motor train unit. According to the motor train unit power optimizing prediction and control method based on the model disclosed by the invention, motor train unit power distribution model predication and control can be realized, power distribution is optimized according to variation of a motor train unit speed in the running process of the motor train unit, so that energy saving and economy can be kept when the motor train unit runs, and power distribution efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of distributed optimization control methods for EMUs, in particular to a model-based power optimization predictive control method for EMUs. Background technique [0002] As a fast, convenient, clean and efficient means of transportation in modern cities, EMUs have become an important symbol of a country's comprehensive national strength, urban economic strength, people's living standards and modernization. In recent years, China's economic strength and comprehensive national strength have been significantly enhanced, and China's railway system has also undergone substantial upgrades and expansions. On April 18, 2007, my country's railways carried out the sixth major speed increase. In this speed increase, my country launched the CRH series high-speed EMUs CRH1, CRH2 and CRH5 for the first time. The operating speed of these EMUs reaches 250km / h. According to the medium and long-term development plan of my c...

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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a model-based power optimization predictive control method for EMUs, which is used to solve the problem that the power distribution is not optimized due to changes in the speed of EMUs during the operation of EMUs

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