The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper investigates an integrated production inventory routing problem with time windows where a central depot is responsible for supplying single type of perishable food to multiple retailers within the planned time horizon. A mixed integer linear programming (MILP) model aiming at maximizing the total profit is formulated with explicitly tracing the food quality. To strengthen the formulation,...
Vehicular ad hoc networks (VANETs) are regarded as essential ways for vehicles to share information with each other. As communication range is limited, multiple relay nodes are often required for establishing the multi-hop routing path between the source node and the destination node. Dependability of such routing path may be compromised due to different motion states of vehicles. In this paper, we...
This paper examines two optimal power management strategies (i.e. BL strategy and CD/CS strategy) for a series plug-in school bus. The fuel performance of these two strategies is compared. Dynamic Programming approach which is able to achieve global optimal solution is applied in this study to guarantee a fair comparison. Simulation results are presented, showing that difference between the optimal...
Based on the study of temperature rise during the fast filling of fuel cell vehicles, a new structure of injection nozzle was studied in this paper and the influence of temperature distribution and rise within hydrogen tank was investigated. 2-dimensional models of the type 3, 74L hydrogen tank were established. The simulation was based on the modified standard k-e turbulence model and a real gas...
The control strategy of cultch engagement process for AMT vehicle starting stage was researched in this paper, and the control strategy of multi-stages which developed based on fuzzy-control was introduced. The initial-starting stage, starting-accelerate stage and tend to synchronous stage of clutch was controlled in fuzzy closed-loop. In order to increase the control accuracy, the control parameters...
Fatigue - one of the major mechanical failure, has caught more and more attention in vehicle reliability study. Fatigue test results of vehicles are usually discrete, which is caused mostly by the user's conditions. It is considered the user's real purpose in the test, which can help the users to develop or design a suitable testing program, improve the test run quality and shorten the product development...
Aimed at the effect of variable coefficients and the constant coefficients to the system, a quarter-car two degree freedom suspension vibration model is described, with the aid of matlab alternating senior programmable language, the algorithm is gained through function file, the simulation model of the road noise and the suspension system is obtained. Moreover, The one order standard sensitivity function...
Rollover is a one of the major accidents on transportation vehicles. Based on the early-warning monitoring on the rollover angle and the rollover angular velocity in vehicle operation process, this paper established a rollover vehicle model of stable steering, and researched the influence of vehicle rollover angle and rollover angular velocity threshold caused by lateral acceleration in the steady-state...
The static evaluation used in Chinese chess computer game currently could neither reflect the strength trend of game players objectively nor accomplish the strategic purpose of game players, so a situation-evaluating matrix is defined and the dynamic character of the situation-evaluating strategy is analysed based on game situation's influence. Furthermore, a high-class evaluation method based on...
The research develops the vehicle being used to measure the friction coefficients of airstrip. The measuring system is mainly composed of machinery system and electrical equipment system. Among them, the machinery system accomplishes the actions such as the speed's transferring, the measuring wheel's lift and falling and watering, etc. And the electrical equipment system is composed of PLC as a slave,...
In this paper, a six degree of freedom half body vehicle suspension system is developed and the road roughness intensity is modeled as a filtered white noise stochastic process. Based on control theory, the fuzzy control system of the active suspension is established. With the aid of software Matlab/simulink, simulation process is done. Simulation results indicate that the proposed active suspension...
In this paper, a six degree of freedom half body vehicle suspension system is developed. The neural network algorithm is used to control the suspension system. With the aid of software Matlab/Simulink, the simulation model is achieved. With changing of neural network coefficients, such as changing of training epoch and changing of the network structure, a lot of simulation work is done. Simulation...
The aim of an observer (virtual sensor) is to estimate a special variable from available information and a system model. The vehicle sideslip angle and velocity of the centre of gravity (Vg) are the important parameters in the vehicle stability control system. Extended Luenberger observer, extended Kalman filter and sliding-mode observer (SMO) are the widely used to observe the two parameters. Chattering...
The classical road spectrum estimation (FFT) is often used to deal with the data in traditional road spectum testing. The test datum after windowed often leads to side-lob, false peaks and low precise analyse result. This paper uses the maximum entropy method to cope with the road response spectum signal, analyzes the effects of the AR modeling order choosing to the road spectum estimation, gets the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.