运用数值风洞法对斜拉桥部分周围流场进行数值模拟,得到斜拉桥周围流场的速度分布和斜拉桥表面的压强系数。
Through the numerical analysis of the flow phenomenon around the cable-stayed bridge by means of numerical wind tunnel, the speed distribution of the f.
针对每个离散角速度,依据影响系数法,采用包含残余振动值和校正不平衡的广义线性二次型目标性能函数推导出控制律。
For each discretized angular speed, the control law is derived from the generalized linear quadratic objective performance function including residual vibration measurements and imbalance correction.
提出了在用改进雨流计数法进行载荷数据统计时结合载荷分布参数估计的变差系数法,可简化统计处理过程,提高计算速度。
Differential coefficient method together with distribution parameter estimation is put forward, so that the data processing may be implemented on a computer, thus greatly reducing calculation.
加速度测试法的先决条件是确定列车基本阻力、回转质量系数和列车质量,而其测试关键是列车加速度的测定。
The precondition of the acceleration testing method is the determination of the train resistance, rotary mass coefficient and train mass. The crucial test is measurement of train acceleration.
为了消除端点和假频影响,文中采用了双曲线速度滤波法和相似系数法。
Hyperbolic velocity filtering and similar coefficient method are introduced to remove the influences resulting from end-point effect and alias.
通过对螺旋锥齿轮机械式铣齿机与CNC铣齿机之间加工调整参数转换原理的研究,推导了这两类机床运动轴数学模型;提出了求解各运动轴表达式系数的速度求导法。
By studying the transformation principle of the machining setting parameters from cradle style machine to CNC gear generator, mathematical kinematic models of every axis are deduced.
通过对螺旋锥齿轮机械式铣齿机与CNC铣齿机之间加工调整参数转换原理的研究,推导了这两类机床运动轴数学模型;提出了求解各运动轴表达式系数的速度求导法。
By studying the transformation principle of the machining setting parameters from cradle style machine to CNC gear generator, mathematical kinematic models of every axis are deduced.
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