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Calibration Algorithm of Joint Zero position Deviations for 6 DOF Joint type CMM

Ye Dong et al  
The joint zero position deviations of joint type CMM,which result from assembly technology errors,have an enormous influence on the pose errors of probe end.Therefore,a calibration algorithm of the joint zero position deviations is proposed.On the basis of setting up mathematics model of 6 DOF joint type CMM,a linear calibration algorithm by applying total differential,least square and iterative algorithm is presented.And the correctness of the calibration method is validated by the computer simulation.
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