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管片拼装机自身刚度以及转动惯量大,同时拼装过程是单侧受载,导致其在回转起步时存在冲击现象,严重影响了其控制精度和使用寿命。针对这一问题,对影响管片拼装机回转起步工作特性的敏感结构参数进行了分析和优化。根据流体动力学理论建立了数学模型、利用AMESim仿真模型模拟了其起步工况,确定了影响其起步工作特性的敏感结构参数;并且应用多因素正交试验法优化出了最佳参数组合;最后在合作单位进行了实车试验。仿真和试验结果表明:优化后的管片拼装机在回转起步阶段冲击量较优化前减小了约40%,可有效的改善其动态性能,能很好地抑制起步冲击现象。
The rigidity and moment of inertia of the segment assembling machine are large, meanwhile, the assembling process is unilateral loading, resulting in the impact phenomenon at the start of turning, seriously affecting the control precision and service life. In response to this problem, the sensitive structural parameters that affect the initial operating characteristics of the segment assembly machine are analyzed and optimized. According to the theory of hydrodynamics, a mathematical model is established, the starting condition is simulated by AMESim simulation model, and the sensitive structural parameters that affect the initial working characteristics are determined. Finally, the optimum parameter combination is optimized by using the orthogonal experimental method. Finally, In the cooperation unit conducted a real car test. The simulation and test results show that the optimized chip assembly machine can reduce the initial impact by about 40% before the impact at the initial stage of turning, which can effectively improve the dynamic performance and suppress the initial impact.