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YIN Dongdong, DU Suigeng, YU Longqi, MA Yunfeng. Dynamical simulation on the pressure response of load system of linear friction welding machine[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (7): 49-52,56.
Citation: YIN Dongdong, DU Suigeng, YU Longqi, MA Yunfeng. Dynamical simulation on the pressure response of load system of linear friction welding machine[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (7): 49-52,56.
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Dynamical simulation on the pressure response of load system of linear friction welding machine

  • Key Laboratory of Ministry of Education for Contemporary Design and Integrated Manufacturing Technology, Northwestern Polytechnical University, Xi'an 7l0072, China

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  • Received Date: February 04, 2009
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  • In order to study the closed-loop control qualities of the electro-hydraulic servo load system of the linear friction welding machine on the slipway pressure, closed-loop transfer function of the pressure for the electro-hydraulic servo load system was established according to the relationship between input and output variables, a simulation model was established according to the transfer function and the simulation was carried out. In order to validate reliability of the simulation result, a frequency characteristics experiment of pressure was implemented under closed-loop control, and the system pressure's affect on the pressure's closed-loop response characteristics was specially analyzed. The results show as follows, the emulational and experimental results are anastomosing; the electro-hydraulic servo load system is a second-order inertial first-order differential link for closed-loop pressure control, the system frequency width is large, and the system stability is high; pressure's closed-loop dynamic response characteristics can be improved by promoting the system pressure.
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