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quadratic polynomial
相关语句
  二次多项式
    Quadratic polynomial method has been applied widely in satellite image retification.
    二次多项式方法在卫星影像纠正处理过程中已得到广泛应用。
短句来源
    In this method, the planned joint trajectories are all expressed by a quadratic polynomial plus a cosinoidal function and are continuous not only in displacements, velocities, accelerations but also in jerks.
    在这种方法中 ,所规划的关节轨迹都采用二次多项式加余弦函数的形式 ,不仅可以保证各关节运动的位移、速度、加速度连续而且还可以保证各关节运动的二阶加速度连续 .
短句来源
    The quadratic polynomial is fitted to compensate the non-linearity of the camera lens so as to improve the measuring precision.
    为补偿摄像镜头的非线性影响,进行了二次多项式拟合处理,以提高测量精度.
短句来源
    With a compensation of the bad accuracy lead screw,the accumulated errors compensation function of the lead screw pitch sorted and fit by the quadratic polynomial can reduce the affiliated disturbance of the error compensation,and conform the robot running at a uniform speed.
    在丝杠误差补偿时,用二次多项式分组拟合丝杠螺距累积误差补偿函数,以减小修正量噪声引入,保证机器人工作速度的均匀性要求。
短句来源
  “quadratic polynomial”译为未确定词的双语例句
    Analysis on Some Problems in Quadratic Polynomial Retific ation of Satellite Image
    关于卫星影像多项式法纠正中若干问题的分析
短句来源
    Temperature measurement precision of fiber Bragg grating improved by quadratic polynomial fitting arithmetic
    多项式拟合提高光纤光栅测温精度
短句来源
    A point feature-based matching algorithm was employed, and a quadratic polynomial fitting method was used to locate the corresponding points within one pixel.
    该方法是在镶嵌影象的重叠部分进行基于特征的影象匹配 ,即首先获取一序列同名点 ,且这些同名点的匹配精度在一个象元以内 ;
短句来源
    The results indicate that the concentrations of glucose, fructose and sucrose are significantly correlated with ultrasonic velocity by quadratic polynomial (R~2>(0.997)).
    结果表明:纯糖溶液中声速与浓度用二次方程回归呈极显著正相关(R2>0.9970);
短句来源
    It adopts Chebyshev polynomial technology which has low approximation error and fast converging speed to approach sine function of acceleration/deceleration expression,and speed and displacement are directly calculated according acceleration's quadratic polynomial to avoid the influence of approximation error on parameter calculation.
    采用逼近误差小、收敛速度快的契比雪夫多项式对加速度正弦函数二阶展开,速度、加减速区间长度等参数则直接利用基于二阶多项式的加速度求解,避免了函数逼近误差对参数计算的影响。
短句来源
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  quadratic polynomial
The velocity of the sheet is a quadratic polynomial of the distance from the slit and the sheet is subjected to a linear mass flux.
      
The interpolant is obtained patching together cubic with quadratic polynomial segments; it is co-monotone and/or co-convex with the data.
      
Cubic-spline and discrete-quadratic polynomial techniques are presented for reliably computing up to third-order derivatives of experimental information.
      
An algorithm to recover bit timing is proposed which maximises a quadratic polynomial approximation to the log-likelihood function.
      
The formulae are characterized by the presence of an infinite series whose general term consists of a linear recurrence damped by the central binomial coefficient and a certain quadratic polynomial.
      
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An theorem on quadratic polynomial scaling, and decimal string code, dy- namic fitness are presented, which provide effective approaches for genetic algo - rithms' efficiency and performance, and have been verified empiric methods when applied to PID controller optimization.

针对PID控制器参数的优化问题,提出了改进遗传算法(GAs)性能的方法。一系列的仿真实验和分析表明,本文提出的二次多项式定标的应用定理、十进制串编码操作以及基于时域指标的动态适应度能够有效地改进遗传算法的性能和效率。

An image mosaicing new approach based on the integration of image matching and adjustment, which can effectively remove the residual geometric distortions between mosaiced images, was presented. At first, selecting one of mosaiced image as the reference, for example, the left side image, then the other image was matched with it in the overlapping area. A point feature-based matching algorithm was employed, and a quadratic polynomial fitting method was used to locate the corresponding points within one...

An image mosaicing new approach based on the integration of image matching and adjustment, which can effectively remove the residual geometric distortions between mosaiced images, was presented. At first, selecting one of mosaiced image as the reference, for example, the left side image, then the other image was matched with it in the overlapping area. A point feature-based matching algorithm was employed, and a quadratic polynomial fitting method was used to locate the corresponding points within one pixel. On the basis of these corresponding points, a adjustment algorithm was performed by adding a polynomial increment to every pixel position in the right side image so that geometric position distortions between the two images is minimal under Least Square principle, thus the two images could be mosaiced together seamlessly. At the same time, the usually used methods for radiometric difference reduction are presented .The proposed approach was applied to mosaic two rectified aerial photos, after image adjustment, the residual geometric distortion was greatly removed.

在概括介绍消除相邻影象辐射差异常用算法的基础上 ,为有效消除相邻影象间几何位置的差异 ,提出了一种将影象匹配与平差理论相结合的影象镶嵌新算法 .该方法是在镶嵌影象的重叠部分进行基于特征的影象匹配 ,即首先获取一序列同名点 ,且这些同名点的匹配精度在一个象元以内 ;然后用正形多项式模拟这些同名点间的几何位置差异 ,再按最小二乘法原理对右边影象进行平差改正 ,以实现两影象空间位置上的无缝连接 .实验结果表明 ,庐镶嵌方法具有良好的效果 .

A new method used for time optimal trajectory planning and control of industrial robots is proposed, which can ensure the motion of a robot's hand along a specified path in Cartesian space has the minimum traveling time under the constraints on the boundary values of joint displacements, velocities, accelerations, and jerks. In this method, the planned joint trajectories are all expressed by a quadratic polynomial plus a cosinoidal function and are continuous not only in displacements, velocities, accelerations...

A new method used for time optimal trajectory planning and control of industrial robots is proposed, which can ensure the motion of a robot's hand along a specified path in Cartesian space has the minimum traveling time under the constraints on the boundary values of joint displacements, velocities, accelerations, and jerks. In this method, the planned joint trajectories are all expressed by a quadratic polynomial plus a cosinoidal function and are continuous not only in displacements, velocities, accelerations but also in jerks. By using the method, a robot's working efficiency can be raised and its life span can be extended. The results of computer simulation and experiment with a Unimate PUMA 560 type robot proves that this method is correct and effective. It provides a better solution to the problem of industrial robot's time optimal trajectory planning and control under the nonlinear kinematical constraints.

提出了一种用于工业机器人时间最优轨迹规划及轨迹控制的新方法 ,它可以确保在关节位移、速度、加速度以及二阶加速度边界值的约束下 ,机器人手部沿笛卡尔空间中规定路径运动的时间最短 .在这种方法中 ,所规划的关节轨迹都采用二次多项式加余弦函数的形式 ,不仅可以保证各关节运动的位移、速度、加速度连续而且还可以保证各关节运动的二阶加速度连续 .采用这种方法 ,既可以提高机器人的工作效率又可以延长机器人的工作寿命 .以PUMA 5 6 0机器人为对象进行了计算机仿真和机器人实验 ,结果表明这种方法是正确和有效的 .它为工业机器人在非线性运动学约束条件下的时间最优轨迹规划及控制问题提供了一种较好的解决方案 .

 
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