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1)  perturbed trajectories fitting
轨迹拟合
1.
A novel fast method for transient stability prediction is proposed based on phasor measurement unit(PMU) measurements and perturbed trajectories fitting of rotor angle.
基于相量测量单元(PMU)上传的功角实时量测数据,利用发电机功角受扰轨迹的分布知识,提出了一种基于功角受扰轨迹拟合的暂态稳定快速预测方法。
2)  Trajectory Fitting
轨迹点拟合
3)  move contrail fitting
运动轨迹拟合
1.
Application of stepwise regression analysis in move contrail fitting of automobile gear shifting manipulator;
逐步多元回归分析在汽车换挡机械手运动轨迹拟合中的应用
4)  track simulation
轨迹模拟
1.
NET s magic image & picture dealing with function, through coordinate point collection and curve fitting, curve track simulation is implemented, and coordinate point collection is compared with curve fitting.
NET的图形图像处理功能,用鼠标采集坐标点和曲线拟合这两种方法分别实现曲线轨迹模拟,并比较这两种方法的优劣性。
5)  virtual trajectory
虚拟轨迹
1.
In order to implement virtual trajectory control of cobot trajectory planning method based on operation force was put forward,and trajectory planning of cobot was carried out according to operation forces,a desired path and current position of cobot endpoint.
为实现合作机器人(Cobot)的虚拟轨迹控制,提出了基于操作力的轨迹规划方法;根据操作力、期望轨迹和Cobot末端当前位置,对Cobot进行了轨迹规划,建立了Cobot的轨迹规划模型,并对Cobot跟踪直线和圆弧轨迹进行了实验研究。
2.
In order to implementing Cobot cooperation with human virtual trajectory control strategy of Cobot was given based on differential geometric theorem.
为了实现 Cobot 与人合作,对 Cobot 的虚拟轨迹控制和不完全约束关节机构进行了研究。
6)  simulation locus
模拟轨迹
1.
This paper presents the basic steps of the numerical simulation,and a method for improving the simulation locus set in an inverse direction between two layers;otherwise,the parts will be twisted.
本文介绍了数值模拟的基本步骤,重点介绍了圆/方锥台形件模拟轨迹的改进,轨迹环采用正逆相间方式可避免成形件发生扭曲变形。
补充资料:非线性最小二乘拟合
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性质:用最小二乘法拟合非线性方程。有些变量之间的非线性模型,通过变量变换可以化为线性模型,此称为外在线性。而有些变量之间的非线性模型,通过变量变换不能化为线性模型,通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε,其残差平方和。S(θ)是θ的函数,当模型关于θ是非线性的,正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值,拟合非线性回归方程。

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