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In order to eliminate accident, reduce congestion and improve the efficiency of the traffic circle, three effective and feasible methods are proposed.As an example,the traffic circle flow of the circle in Xiamen China is simulated by these methods above using VISSIM soft.The results of simulation show that three methods applied to different traffic flow each,then we did further simulations to the...
Electronic institutions (EIs) have been proposed as a means of regulating open agent societies. EIs fix what agents are permitted and forbidden to do and under what circumstances. And yet, there is the need for EIs to change their regulations because of the changing environment. In this paper we focus on a formal model for the dynamic EIs and give formal semantics for the changes of the EIs.
It is a timeless and actual problem to develop vehicle's active safety. In case of commercial vehicle category more sophisticated difficulties could be found. Increased mass and inertia are the fundamental differences between a usual passenger car and a truck. At the same time, the low series number requests cheap solutions. The aim is in this way to ensure low cost solutions to control increased...
Focusing on the problem that the detection accuracy of traffic detection system is sensitive to the changes of complex environments, this paper presents an improved method of vehicle detection. It builds and updates the background adaptively. Additionally, to improve the computation efficiency of shadow elimination, a fast algorithm of neighbor mean based on HSV model is proposed. As the occlusion...
When integrating single vision sensor and low grade IMU for 6-DOP navigation, nonlinearity of observation model makes a problem to estimate position, velocity and attitude. Conventional Kalman Filter could not estimate states correctly because it uses linearized model. Due to these reasons, nonlinear estimation should be used to figure out the nonlinear characteristics. By applying Unscented Kalman...
This paper demonstrates the possibility to detect suspension failures of railway vehicles using a multiple-model approach from on-board measurement data. The railway vehicle model used includes the lateral and yaw motions of the wheelsets and bogie, and the lateral motion of the vehicle body, with sensors measuring the lateral acceleration and yaw rate of the bogie, and lateral acceleration of the...
Precise control of Automatic Guided Vehicles (AGVs) navigating between the aisles of manufacturing systems by the use of local markers is an important task. On the basis of the geometric model of the workspace and the vehicles and that of the sensor uncertainties precise trajectories were recently generated along which the vehicle safely can move. In order to achieve precise trajectory tracking the...
Vehicle mobile movement can cause dynamic error of the platform inertial navigation system (PINS) which is widely used in underwater vehicle. Taking PINS as the research object, the space motion mathematical models of underwater vehicle are analyzed and established by reasonable simply. Through coordinate transformation relationship research of the fixed coordinate system, the moving coordinate system...
Considering the dynamic error of platform inertial navigation system (INS) caused by vehicle mobile movement, output information of underwater vehicle and input information of INS are deeply analyzed. This paper gives the transform relationship among geographical reference frame, fixed and reference frame which are used to describe movement of underwater vehicle. Then, logical join between vehicle...
Compared with traditional fuel vehicles, electric vehicles need to deal with the problem of mapping relationship between accelerator pedal and motor-driving torque. At present, this problem is mainly resolved by means of PID control and Fuzzy control. However, the issues on stability, real-time performance, adaptability and complex achievement follow, too. In this paper, a neuromuscular-like model...
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