工程设计中引入最优化技术,在工作中经常遇到两个方面的难题。其一是一般的优化方法都是对连续变量的函数进行寻优,而实际设计问题的参数大都需要符合标准量值。过去采用连续变量优化,结果圆整的方法,有时会使优化得不到最优解或者得非可行解。其二是到目前为止机床主轴部件还大都是对静态特性进行优化,目标函数取静刚度等,或把一阶固有 The introduction of optimization techniques into engineering design often leads to two problems at work. First, the general optimization methods are to optimize the function of continuous variables, and most of the parameters of the actual design problems need to meet the standard values. In the past using continuous variable optimization, the results of the round method, sometimes can not optimize the optimal solution or not feasible solution. The second is that so far the main part of the machine tool is still the optimization of static characteristics, the objective function to take the static stiffness, or to the first-order inherent