Applied Mechanics and Materials Vols. 380-384

Abstract: In Chinese, there are two meanings of the character Ba. One meaning is a reference, which refers to the leaders of Governors alliance in ancient China. Another meaning is the verbalization of a noun, which means Ba by power and violence. With the development of automobile industry, the more cars on the street, the lower of the cars price. Under the influence of divers psychological factors, road hogs appear frequently when overtaking and traffic jams happen. These uncivilized phenomena would give rise to serious jams and traffic accidents. This paper has a research on the phenomena and features of drivers psychological factors of road hog under the above Background. Consequently, ESP Driving Safety System is designed. Employing fuzzy control principle, this system realizes the interaction between drivers and ESP. ESP restrains psychological factors of road hogs successfully and it is the giant of safety driving system.

Abstract: This paper studies a nonholonomic mobile manipulator that consists of a wheeled mobile platform with a mounted serial manipulator. It is designed and developed to navigate autonomously in handling moving objects subjected to nonholonomic constraints. A camera is mounted on the front of the platform and employed to identify and collect information about distance, velocity and direction of the object. With that information collected, a motion planning system determines the preferred operation region and the obstacle-avoidance area, and thus generates the expected trajectory of the mobile manipulator. Experimental results are shown that the mobile manipulator can identify the target, generate trajectories and grasp the moving object autonomously.

Abstract: The research of this paper was derived from the small autonomous underwater vehicle (AUV)Raider well performed in the 15th International Underwater Vehicle Competition (IAUVC),San Diego. In order to improve the performance of underwater vehicle, the control system of performance motion played an important role on autonomous underwater vehicles stable motion, and the whole control system of AUV is the main point. Firstly, based on the motion equations of six degrees of freedom, the paper simplified the dynamical model reasonably in allusion; Due to the speed of Raider to find the target was very low, this paper considered the speed was approximately zero and only considered the vertical motion. Therefore, this paper established the vertical hydrodynamic model of Raider, obtaining the transfer equation of vertical motion. Through the experiment and Matlab/Simulink simulation, this paper got the actual depth of the step response curve and simulation curve, and verified the validity of the vertical hydrodynamic model and the correlation coefficient.

Abstract: Because of the sensitive factors, such as the larger loads, higher mass center and relatively narrow tread in comparison with the height of heavy vehicles that have the poor dynamic rollover stability. This paper set of anti-rollover LQR control algorithm based on early warning. The model-based early rollover warning algorithm utilize the TruckSim® models and early warning reference model to predict the impeding vehicle rollover time in advance and told the driver the warning signals so that drivers had enough time to take appropriate measures to prevent vehicle rollover that called time to rollover (TTR), thereby greatly improving the vehicles active safety performance of the heavy vehicles. As to the anti-rollover LQR control algorithm, the principle was to use the optimal additional yaw moment obtained from the control algorithm and then made it reasonable impose the corresponding wheels by taking the moment distribution methods based on the differential braking for the purpose of reducing the risk of rollover. The simulation results show that the algorithm was presented in this paper can effectively reduce the lateral load transfer ratio and actively void the occurrence of rollover accidents.

Abstract: A new-style four-wheeled driving (4WD) series-parallel hybrid electric vehicle (HEV) plus with a two speed transmission is presented in this paper. The system structure and operation principles are discussed systematically, and then the control strategy is proposed. Control strategy focus on the multi modes switch logic and power distribution. In addition, shifting strategy of the two speed transmission is researched. Simulation results indicate that the presented 4WD HEV can realize nice dynamic property; the presented control strategy is correct and effective.

Abstract: Base on the fuzzy reasoning technology and digital signal processor technology, this paper designs a DSP-based point light source fuzzy tracking system, which can be used to improve the efficiency of solar panels. By analysis characteristics of the system and summing up the experience, it gave a set of fuzzy control rules, and determined some important control parameters. It uses the DSP as the core of the system control unit to ensure the real-time and stability. Simulation and experiments results show the system has a good performance.

Abstract: with the rapid development of information technology, the deepening of sensing detection and automobile electronic technology, the safety and reliability of vehicle electronic control has been the core problem to be solved in the automotive electronic control system. Sensor detection technology has become an important part of the development of automotive technology. This paper first analyzes the automobile electronic detection technology and sensing detection applications. Based on this, the theoretical framework principle model of automotive electronic software program design has been further deepened, so as to take the electronic program design of automotive anti-collision radar as the empirical analysis example. Finally, the optimization of automotive electronic program software design provides scientific basis and practice way to a certain extent in this field research.

Abstract: For the feature of dynamic response slow and static PID control error of the furnace remaining oxygen, we introduce fuzzy PID control method to improve the heating furnace combustion air-fuel ratio and reduce energy consumption and enhance dynamic performance.

Abstract: Four convex surfaces distributed along the circumference of cylinder parts need to be milled. Restricted by the processing way, sometimes the workpiece is not finished in this process after it is removed from the machine tool, which may influence the subsequent process. A monitoring system based on S7-200PLC and Kingview is designed in order to achieve two effects: firstly, this system can give an alarm when the workpiece is removed from machine tool if it is not finished; secondly, this system can set up a database and save processing information. The application result is analyzed.

Abstract: In order to realize the functions such as the real-time monitoring of running status, the system performance analysis and the parameter optimization set and download, this paper designed the monitoring software of the nanopositioning control system. The unified modeling language was adopted to analyse and design the monitoring software modularly, and the software consisted of the USB communication module, the performance analysis module, the displacement module, the calibration analysis module and the parameters configuration module. Through testing the control system, the experimental results showed that the monitoring software is reliable and stable, and add multiple analysis functions. It is operated conveniently and meet the users needs.