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Safety Performance of tank truck transportation attracts more and more attentions as a result of the rapid growth of industrial requirements for energy sources and chemical productions. Researches focusing on working states of vehicles serve as a basis of improving transportation safety. This paper chose a representative type of oil tank trucks as the research-prototype, built a full vehicle model...
In order to get safety and stability braking for a high running vehicle in cornering course, a safety control scheme which combines ABS, AFS and DYC is studied in the paper. The control method is developed based on the vehicle system dynamics and control theories. From the simulation researches based on MATLAB/SIMULINK, the control method developed here can make the vehicle having a good braking stability...
In the context of intelligent transportation, this paper presents a novel online trajectory-generation method for autonomous overtaking capable of handling emergency situations and aborting the manoeuvre, if required, in a smooth and collision free manner. The proposed methodology is guidance based, real-time applicable, and ensures safety and passenger ride comfort. Based on the principles of rendezvous...
This paper presents algorithms for vision-based detection, tracking and trajectory generation of vehicles in simple video sequences of traffic scenes which are registered by a stationary camera. Processing is done by three steps: improved vehicle detection method, faster tracking algorithm and new vehicle trajectory generation technique. Vehicles are viewed as rectangular blocks with certain active...
In the paper, a practical method for road detection is proposed. Many features of vehicle are introduced to detect the preceding vehicles. According to the characteristics of lane marks and vehicles, the improved Sobel operator convolution kernel is introduced in the image preprocessing to enhance the robustness of the algorithm. In order to be feasible to the change of illumination and road conditions,...
An advanced suspension system with adjustable fuzzy control algorithm is designed to improve vehicle comfort and road holding capability. It not only can reflect the advantage of fuzzy logic in nonlinearity system but also can improve the disadvantage of common fuzzy control method strongly depending on the experience. In this paper, taking the ride comfort and road handing as system control objective,...
Based on the discrete wavelet transform (DWT), a new time-frequency algorithm for octave analysis (OA) of nonstationary sounds, so-called DWT-OA method, is proposed in this paper. A DWT-based multirate filter bank combined by a set of low-pass and high-pass filters was developed for octave analysis of some measured nonstationary interior vehicle noises. To establish the multirate filter bank, the...
For two degree of freedom of vehicle suspension model, a novel adaptive controller is presented. In order to compare and analyse, acceleration mean square root of vehicle's vibration is adopted as evaluation index for the riding comfort. In addition to considering the handing safety of vehicle, wheel dynamic load and suspension dynamic deflection are also used to contrast research. The simulation...
This paper mainly explored the influence of toll-by-load policy on the vehicle type constitution pattern and traffic volume of freeway. According to the investigation of this paper, the freeway is tending to lose road users further under the current toll policy. Consequently, either the profits of the freeway are greatly influenced, or the service capacity of the un-tolled trunk highway within the...
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