基于蒙特卡洛方法的液压泵变量伺服机构稳健性优化  

Robust Optimization of Hydraulic Pump Stroking Mechanism Based on Monte Carlo Method

作　　者：汪浒江 毛明[1] 唐守生[1] 冀海[1] 

机构地区：[1]中国北方车辆研究所车辆传动重点实验室,北京100072

出　　处：《兵工学报》2015年第6期961-967,共7页Acta Armamentarii

基　　金：国家国防科技工业局基础产品科研创新项目(VTDP-3303)

摘　　要：根据履带车辆对静液转向控制机构的特殊需求,为保证系统性能的稳健性,以变量伺服机构的跟踪精度、相对稳定性分布的均值及标准差为优化目标,通过建立液压泵变量伺服机构工作过程的动力学模型,应用蒙特卡洛方法建立其跟踪精度等性能的稳健性优化设计新方法。研究表明,通过优化匹配液压泵变量伺服机构反馈拨叉长度、阀口梯度、活塞直径的设计名义值,不仅能保证系统具备良好的跟踪精度和稳定性,而且能增强系统抵抗结构参数、油液参数变动的能力,即显著增强系统的稳健性。In order to ensure the robustness of stroking mechanism,the mean and standard deviation of dynamic tracking accuracy and stability index are taken as the optimization targets according to the special demand on stroking mechanism of tracked vehicle. A system dynamic model is established,and a new robust optimization method is built based on Monte Carlo method. Research shows that the dynamic tracking accuracy and stability of system can be guaranteed and the ability of system resistant to the change of structure parameters and fluid parameters can be enhanced by optimizing the nominal values of the feedback fork length,valve port gradient and piston area. The system robustness can be significantly improved.

关 键 词：兵器科学与技术 变量伺服机构 稳健性优化 跟踪精度 

分 类 号：TH137.51[机械工程—机械制造及自动化]