| With detailed analysis and research into the pulsatile vibration during operation of the new type roller grinding mill with hydraulic loading unit developed by Zhengzhou University and Xinxiang Sida Ltd, this paper puts forward to adopt the sound structural parameters in the grinding-force offering unit to enhance its cushioning performance by employing the modern optimization technique, and therefore the unfavorable vibration reduces even diminishes, the mill performance is improved as a whole.The modeling of the grinding-force offering unit, the algorithm to obtain the numerical solution of the mathematical model , the validation of the emulational model with abundant experiment, the objective function to approach the optimal cushioning performance are introduced detailed in this paper. The paper probes into the method and procedure to match the key factors affecting the cushioning performance using optimization based on the numeric simulation. Some ways to solve universal problems rooted in optimization are also presented, such as randomly generating nonlinear apexes of the complex with Beth-Dram's shuffle and combination method, two-step optimization technique,etc. Several useful conclusions are obtained,and the optimal key structural parameters are verified and analyzed theoretically.Practice in all stages above proves the idea guiding the research and the measures applied are correct, doable and can be referred in other hydraulic system. The well-proved research result is applied successfully on the plot. Generally speaking, the previous study goal is fulfilled. |