Information Engineering for Mechanics and Materials

Volumes 80-81

doi: 10.4028/

Paper Title Page

Authors: Xiang Yu Dong, Jun Qiang Xi, Hui Yan Chen
Abstract: For the parallel hybrid electrical vehicle (PHEV) with motor equipped in front of the transmission, the inertia of the transmission-input increases with the power system and the clutch assembly. To reduce the synchronizer slipping friction power, the input speed of the transmission should be controlled, so the active-synchronizing control is applied. To enhance the speed-adjusting precision and shorten the synchronizing time, engine-motor joint speed-adjusting-control is utilized. Finally, a vehicle simulation is carried out, and the test result proves that the method is feasible.
Authors: Sheng Wu Yu, Rui Jun Liu
Abstract: According to the capability require of the automotive transmission control mechanism(ATCM), and entered into test method by the automotive accessory corporation and user,developed the performance test bench of ATCM,and introduce the makeup and function of test bench and control system. The test results showed that this test bench has many merits such as high test precision,stable anti-interfere capability,rapid fix test element,perfect function of man - computer dialogue,and see about history data facilely. It can provide reliable test method for the ATCM’s test and scientific reference for improve on ATCM.
Authors: Rui Jun Liu, Sheng Wu Yu
Abstract: This paper has proved that the HIC of local engine hood collision area is relative to the distance between the collision point and potential secondary collision point, and with the rigidity of the second collision point, in the process of protection for pedestrians. The pertinence formula was built and the high risky spot of each local collision areas was doped out quickly, and the accuracy of the formula is validated by the subsequent real car collision test.
Authors: Hai Yun Han, Ke Du, Gang Wang
Abstract: We consider the information sharing, distributed processing and interoperating caused by different Standards and information models in this paper. For various parts of Power Grid such as generation, transmission, transformation and etc. A division method based on automatic control theory is proposed. With the large quantity collection of electric power production, operation and control information, we classify the information to the 4 categories and 12 sub-categories. The Quality Function Deployment (QFD) method is introduced as an innovative usage for evaluating the classification results, which is widely used in the procedure area of production. The division method for the information of power system is proved to be novel and the classification results can be used as the fundamental research of united power information model for further Smart Grid.
Authors: Yong Chen
Abstract: The jumping procedure of the human was captured with a high-speed video camera. The geometrical configurations and motion postures of the human during jumping were analyzed from the high-speed photographs. Based on the biological observation, the human jump was simplified and a mechanical model was put forward. The height and vertical velocity of COM of the human were analyzed. The angular velocity of the shoulder joint, hip joint, knee joint and ankle joint were shown in figure.It was shown that the arm swing was able to help increase the takeoff velocity. The results would provide some theoretical and practical references for biomimetic design for improving the reasonable motion of the jumping robot. This work may provide the basic theory in developing human jumping robot in structural design. Besides, it provides an important reference to study the other bionic robots.
Authors: Li Qiang Jin, Chuan Xue Song, Jian Hua Li
Abstract: In conventional vehicles, the control of vehicle speed is achieved by changing the engine load through adjusting the acceleration pedal. However, in electric vehicles, this is achieved by controlling the target motor torque obtained from the look-up table in accordance with the position of acceleration pedal. This method is an open-loop control, with which the engine brake cannot be implemented during downhill trips. In this paper, a closed-loop control of vehicle speed for electric vehicles is proposed. The target vehicle speed is set by the acceleration pedal. The controller collects the real vehicle speed, whereas the PID controller, according to the error of the real and target vehicle speed, adjusts the motor torque in real time to realize the closed-loop speed control. Under such controlling, the motor torque can be changed correspondingly with the resistance, thus makes the driving performance of electric vehicles more identical to that of conventional vehicles.
Authors: Hua Cong, Guang Ping Wu, Fu Zhou Feng, Guo Qiang Rao
Abstract: This paper presents a reliability assessment method for the system with multiple degradation parameters based on SVDD and SVR. The method transforms different performance parameters of the system to a distance measure by SVDD, uses SVR to analyze and predict the distribution parameters of SVDD distance, then create the overall system performance degradation assessment model. Through vehicle tracking experiment, collecting different degradation parameters of the diesel engine, a reliability curve stands for the whole system degradation is achieved. Compared to traditional reliability assessment method, the new method combines the various parameters so that more effectively describes the diesel engine performance degradation, and is more instructive for the maintenance of the vehicle.
Authors: Hou Jun Lu, Dao Fang Chang, Wei Jian Mi, Jing Shuai Liu
Abstract: With the further research of large container terminal machine going, promoting single equipment’s efficiency cannot greatly enhance the whole logistics service level of container terminal, thus considering the cooperation of each machine of container terminal from the macro view has become more and more important. The cooperative virtual environment uses distributed virtual reality technology as to build a platform that sharing status data and meeting human-computer interaction. Through analyzing the container’s operating process and combing the typical characteristics of handling machine, this paper proposed a new novel method for container terminal machine cooperation and mutual interaction of each cooperative unit in the virtual environment, so it can present the imbalanced state of production system in the operation process directly and help to make fast decisions.
Authors: Zhi Wei Xu, Yong Xian Liu
Abstract: A multi-dimensional module partition methodology is put forward for CNC lathe, in which not only the functional module partition and the physical structure module partition of CNC machine tools are taken into account, but the characteristics of different stages of in the whole life-cycle of machine tools is considered as well. On the basis of this the principle of module partition for CNC machine tools are presented. The mechanical structure system of CNC lathe is elaborated on the functional module and structural module. A CNC machine tool company’s HTC Series CNC lathes modular design is illustrated as an example.
Authors: Chi Wu Bu, Li Xun Zhang
Abstract: A robot system is present for the wind turbine blade grinding work. The robot is a mobile manipulator equipped with a grinding tool. In order to realize the compliant control of the operation force, a robust impedance controller is present in the presence of coupling factors between the mobile platform and manipulator, modeling uncertainties and existing bounded disturbances. The proposed control strategies guarantee that the system motion converges to the desired manifold and the desired constraint force. Simulation experiment has been done and the experiment results show that, the presented control method can realize the robust control of mobile manipulator, and thus show the effectiveness and correctness of the designed controller.

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