Dynamics Analysis And Data Processing Of Dynamic Truck Scale

Vehicle Weigh-in-Motion(WIM) systems were rapidly developed following transportation construction, enrolling serious vehicles overload and weighing charge. For it was quickly, efficiently and without interrupt. Dynamic truck scale (DTS) based on WIM systems which can account by the weight of the car is now in widespread use. However; The WIM systems still need improve in some details: limit of the car velocity, measurement accuracy, which is the key content in my paper. The load receptor is the key components of Dynamic truck scale, the appropriate stiffness of it is essential to improve the measurement accuracy in the design process. To optimize the circuit and improve data algorithm also benefit for this.In order to choose the appropriate stress and strain, the dynamics mechanics model based on MD.ADAMS and MSC.Patran/Nastran is established for load receptor of dynamic truck scale. The key point is to obtain the stress and strain of the load receptor. The result can provide theoretical support and amelioration method for structure design of the load receptor. The application of parameter estimation in WIM of vehicles is presented. On the basis of discussion of the models of WIM, the parameter equation of axle weight is obtained. Recognize a method mainly knowledge according to the first check of the examination system according to the round heavy dynamic state of parameter estimate, deduce to imply the model which didn't know parameter, then make use of the importation, exportation data of system to carry on system parameter to recognize. Recursive instrumental variable algorithm (RIV) based on least squares method, it introducing instrumental variable matrix to eliminate color noise in the sign. System identification with instrumental variable method is more accurate and effective than with least square method, especially in the case of color noise and uncertain noise's structure. It is an improved algorithm to the WIM and obtains satisfied result with small number of data.Realizing method of system designing VisualC++6.0 which development tool and ACCESS 2003 which is database, and depending on ADO technology link database and serious communication and long-distance data-transmit. The paper aimed at friendly interface, convenient operation and accurate database connection.