Three-dimensional digital model of hot rolling-mill housing was built. The natural frequency and vibration mode shape of the first 10 order modes of hot rolling mill housing were calculated using ANSYS software. The vibration mode shape was studied in detail. The striking vibration signal and subsequently the natural frequencies were measured by placing two 3-Dimensional accelerators in the key points of the rolling mill horsing. Theoretical calculations and experimental results verified each other,high agreement was shown between the experimental results and the theoretical results. The first 10 mode frequency all appeared in the experiment signal with low error. The main mode frequency (117.3Hz) of the experimental signal has the lowest error down to 0.07%.
High-tension power delivery based on electromagnetic coupling for hot spot temperature in power equipment and the systems of current on-line monitoring of early warning is an effective way to solve the 'energy island' .In this paper, a miniature, low cost, high reliability, easy installation and maintenance communication power supply that based on electromagnetic coupling has been designed, it also can provide a lasting and stable power output. Since the central position of the receiver coil and the rectifier filter circuit in the power supply,Optimization design and simulation have been made for the coil and the rectifier filter circuit. A three-dimensional coil was used as the receiving coil, optimization results show that load power is 10.18w at the conditions of low-frequency and high-voltage. It achieves the objective of the miniature and low-cost. The simulation results of rectifier and regulator show that the system can transfer energy at the range of approximately 2% fluctuation.
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