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This paper shows that a comprehensive multivariable approach of autopilot design that mixes sliding mode and PID leads to robustly satisfactory results for underwater mobile robot. The 6-DOF linear equations of motion can be divided into three subsystems for speed control, steering, and diving. The sliding mode algorithm is designed for steering control and PID is used for diving and speed control...
This paper introduces the configuration and design of powertrain test bed of dual-motor hybrid system, based on the test bed, optimazing the torque distribution control strategy of hybrid control system of B70HEV. The result of test proves that the optimized hybrid control strategy based on the powertrain test bed improves the fuel economy performance obviously; it also provides a convenient and dependable...
Vehicle jolting at bridgehead on soft ground has seriously affected the normal usage of the highway. At present, the Asphalt Overlay is adopted to eliminate non-uniform differential settlement in used super highway in China. Therefore, it's very important to analyze the causes of vehicle jolting and to specify its prevention measure. Proceeding from the analysis of the mechanism of reinforcement of...
The Full Velocity Difference Model of traffic flow is extended by taking into account the leading acceleration. The method of linear stability analysis is applied to the new car following model, which shows the stability range of the improved model is obviously larger than FVD and FVAD model. Numerical simulation shows that the extended model can improve the traffic flow by reducing traffic jam.
As an important parameter in vehicle location and navigation system, heading measurement requires a higher precision. The paper aims at the research on fusion of heading information obtained through magnetic compass, angular rate gyro and GPS. Firstly, a integrated filter model has been designed to adapt the error characteristics of gyroscope, magnetic compass and GPS. Then, considering loss of GPS,...
Hypersonic Glide Vehicle (HGV) is one of the most possible ways to put the available hypersonic technology into practice. It is very important for the thermal protection system (TPS) of HGV to predict the heating on the surface fleetly and accurately. In this paper, one quick-predict method for a typical HGV with conically derived waverider construction and skip-glide trajectory was investigated firstly...
Conventional signal timing of traffic mainly aims at automobile vehicles, which can not reflects the pedestrian value. After an earthquake, a large number of pedestrians would find shelter for their safety, so they wanted to get to the earthquake emergency shelter in the shortest time which lead to a large number of pedestrians would gather at a Intersection. A Reasonable signal timing of traffic...
Draw lessons from the immune mechanism of living beings and combine the principle that ants looking for food and put forward the immune ant colony algorithms to solve the logistics and distribution. Use immune mechanism to draw the vaccine while the ants search, and carry on immunity operation to the evolved population and raise the search ability and convergent of the ant colony algorithm to the...
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