Spatial

Autonomous+Robots+Modeling,+Path+Planning

A kinematically redundant manipulator is a serial robotic arm that has more independently driven joints than are necessary to define the desired pose (position and orientation) of its end-effector. With this definition, any planar manipulator (a manipulator whose end-effector motion is restrained in a plane) with more than three joints is a redundant manipulator. Also, a manipulator whose end-effector can accept aSpatialposeisaredundant manipulator ifithas morethan sixindependently driven joints. For example, the manipulator shown in Fig. 1.1 has two 7-DOF arms mounted on a torso with three degrees of freedom (DOFs). This provides 10 DOFs for each arm. Since the end-effector of each arm can have a Spatial motion with six DOFs, the arms are redundant.

标签： Autonomous Modeling Planning Robots Path

上传时间： 2020-06-10

上传用户：shancjb
wavelet and field forecast verification

Current field forecast verification measures are inadequate, primarily because they compress the comparison between two complex Spatial field processes into one number. Discrete wavelet transforms (DWTs) applied to analysis and contemporaneous forecast fields prove to be an insightful approach to verification problems. DWTs allow both filtering and compact physically interpretable partitioning of fields. These techniques are used to reduce or eliminate noise in the verification process and develop multivariate measures of field forecasting performance that are shown to improve upon existing verification procedures.

标签： field forecast verification

上传时间： 2020-07-22

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