This paper presents a path and speed planner for automated vehicles in unstructured environments. A global path planner has been designed with bounded continuous curvature and bounded curvature derivative to ensure smooth driving. This will allow the vehicle to know a priori which is the shortest path within a selected area that guarantees lateral accelerations and steering wheel speeds below g...

Traveling hundreds of miles with an electric vehicle (EV) requires a large battery combined available static fast chargers along the route. Dynamic conductive road charging is seen as alternative it allows EVs smaller sizes to travel over longer distances and eliminates intermittent stops for charging. To transfer power during driving, tracks must be aligned built either above, beside, or on ro...

Abstract To solve the problem of large accumulative errors wheel odometer and inertial measurement unit (IMU), which make pose calculation mistakes due to friction coefficient ground or bumps collisions, furthermore, affect path planning navigation automated guided vehicle (AGV), an extensible fusion localization method based on multiple sensors is proposed. Based traditional extended Kalman fi...

Given two planar graphs that are defined on the same set of vertices, a RAC simultaneous drawing is a drawing of the two graphs where each graph is drawn planar, no two edges overlap, and edges of one graph can cross edges of the other graph only at right angles. In the geometric version of the problem, vertices are drawn as points and edges as straight-line segments. It is known, however, that...

Wheel and rail wear seriously affects the safety reliability of train operations. In this study single-carriage double-carriage models considering connecting unit a high-speed are developed to investigate normal forces, lateral displacements wheelsets. Based on results from these models, Archard model is employed predict wheel wear. addition, based daily measured data, nonlinear autoregulatory ...

Based on the synchronous language elements introduced in Modelica 3.3, a library is described to utilize the new features in a convenient way for graphical model definition of sampled data systems. The library has elements to define periodic clocks and event clocks that trigger elements to sample, subsample or super-sample partitions synchronously. Optionally, quantization effects, computationa...

This paper presents a path and speed planner for automated public transport vehicles in unstructured environments. Since efficiency and comfort are two of the key issues in promoting this kind of transportation system, they are dealt with explicitly in the proposed planning algorithm. To that end, a global path planner has been designed with bounded continuous curvature and bounded curvature de...

For a graph G, χ(G) (ω(G)) denote its chromatic (clique) number. A P5 is the chordless path on five vertices, and 4-wheel consisting of cycle four vertices C4 plus an additional vertex adjacent to all C4. In this paper, we show that every (P5, 4-wheel)-free G satisfies χ(G)≤32ω(G). Moreover, bound almost tight. That is, there class graphs L such H∈L χ(H)≥107ω(H). This generalizes/improves sever...

We consider the problem of dynamically allocating production capacity between two products to minimize the average inventory and backorder costs per unit time in a make-to-stock single machine system. Using sample path comparisons and dynamic programming, we give a characterization of the optimal hedging point policy for a certain region of the state space. The characterization is simple enough...