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Articles by Zheng Hao
Total Records ( 2 ) for Zheng Hao
  Hu Qiong , Li Bing-jie and Zheng Hao
  In order to build up a simulation test installation of mechanical behavior of the lifting pipe system which is the key component of deep-ocean mining system, a mining ship motion simulator is developed. The Stewart 6-DOF platform is selected to simulate the 6-DOF motions including pitch, roll, yaw, surge, sway and heave. According to mining ship response and similarity principles, the pitch, roll, yaw angles are less than 20 degrees and surge, sway, heave amplitudes are less than 200 mm. The upper and bottom platform are connected by six hydraulic cylinders which are driven by six electro-hydraulic proportional valves independently. PID control and fuzzy PID control were chosen as the control strategy. The fuzzy PID control outweighs the PID control. The test results show that the mining ship motion simulator can move under the predetermined attitude and can be used as a mining ship simulator.
  Zhang Qi , Zheng Hao , Zhang Jianping and Peng Hong
  The investment of centralized traffic information system is large and data processing is too concentrate, the autonomous traffic information system based on vehicle-to-vehicle communication is mostly limited to information on safe driving, less involved with the research of the whole road network congestion information collection and transmission. This study puts forward an autonomous intelligent vehicle traffic information system mode which is for the whole urban road network and can collect and transmit information by itself. And then, based on the original information and integration processing model, it builds the corresponding self-diffusion transmission model for different roads, different driving direction vehicles and different information integration results. It also creates autonomous generation and dynamic update models of traffic congestion information for the whole road network. The traffic simulation and the evaluation results in a variety of situations show that IVTIS mode and models are reasonable and basically adapted to autonomous collection and quick transmission for traffic congestion information in urban road network.
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