high frequency oscillation造句

• To avoid high frequency oscillation in the course of autopilot design , damping coefficient value was treated as a constraint , the rise time was taken as objective , and the other performance criteria were taken as constraints , then the robustness design problem was solved by multi - objective optimization method
  摘要在导弹控制系统设计过程中，考虑了自动驾驶仪的高频振荡问题，将其转化为系统的一个约束条件，同时把上升时间转化为目标函数，其他设计指标视为约束条件，采用有约束多目标优化的方法解决了系统鲁棒性设计问题。
• The main numerical method of this code is coming from scheme ( jameson , schimit and turkel ) : using cell - centered finite volume method as spatial discretization tools , and a system of ordinary differential equations for time variable is obtained , which is solved by utilizing five - step runge - kutta scheme as time marching method , introducing artificial dissipation to damp high frequency oscillations near the shock and stagnation point
  本论文采用欧拉方程作为控制方程，利用中心有限体积法进行空间离散，得到对时间变量的常微分方程组，采用龙格库塔多步法进行时间积分，加入人工粘性以消除激波和驻点附近的压力振荡等方法来对naca0012翼型的实际流动进行并行数值模拟。