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Abstract：
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The traditional die forging hammer adapts the scheme of constant speed hydraulic pump, accumulator and striking valve to control the striking energy of hammer head, and there are some problems such as poor controllability and accuracy of striking energy, easy damage and short service life of striking valve. Then, a striking energy control scheme of die forging hammer by AC servo motor driving quantitative pump was designed, which was called direct drive electro-hydraulic servo die forging hammer. For the precise control problem of this new die forging hammer control system, the simulation analysis was conducted by software AMESim and Simulink, and the appropriate solutions were proposed. Firstly, the joint simulation model of AC permanent magnet synchronous servo motor and hydraulic system was established, and the curves of speed and displacement for hammer head, pump flow and motor speed were simulated and analyzed. The results show that the striking energy of hammer head is precisely controlled by motor speed. In view of the limitation of traditional PID to nonlinear control, a wavelet neural network PID control strategy for pressure and speed of die forging hammer was proposed. Finally, using the cSPACE system to control prototype, the effectiveness of the control method was verified by semi-physical physical simulation.
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Funds：
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国家自然科学基金资助项目（51705135, 51705134）
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AuthorIntro：
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毛玺(1962-) ，男，学士，高级实验师，E-mail：maoxi931208@126.com
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Reference：
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