Based On The Predator-Prey Algorithm Traffic Flow Distribution System Research

Being as an advanced intellectualized comprehensive transportation system, the Intelligence transportation system (ITS: Intelligent Transportation System) is developed widely. The urban dynamic network transportation flow distribution theory is one of important key technologies of the ITS.Because of the randomness of transportation flow and the difference of road treatment capability, the load unbalance phenomenon is caused. The urban transportation facility resources are not only wasted, the entire performances of the urban road network are also effected. Therefore, the dynamic transportation flow balance distribution algorithm has become the hot topic of research. Aimi ng at the flow prope r ty of ur ba n r oad transportation network, the urban transportation demand and the formation of the transportation flow are given. Then, the theory and method of dynamic urban transportation management and induction are researched from the point of urban road resource management and complementary advantages.Recently, The predator-prey of ecological balance algorithm has been paid much attention, this thesis is being analyzed earnestly and studies the ecology to prey on system's two population Volterra model foundation, between the hypothesis ecosystem predator did not have the competition, the population scale through does not move into or transfers out changes, thus obtained the corresponding two population predators - - to be arrested the trencherman difference equation model, and aimed in the municipal transportation road network the load not balanced question, proposed that one kind could assign the traffic flow the dynamical load balanced to prey on - - is preyed on the algorithm, this algorithm's basic philosophy was the predator or is arrested the trencherman the ecosystem population to correspond the urban road network the path, corresponds ecosystem's population scale the urban road network path's load information, - - is arrested the trencherman model dynamic periodic variation using the ecology predator, dynamic adjusts in the urban road network various paths' load information, obtains a group"the non-poor solution", the solution jaming of traffic question, The load balance is achieved.