Calculation Method of Turntable Adjusting Angle in Accuracy Measurement of Pointing Mechanism
By analyzing the principle of precision measurement of the pointing mechanism,the pose matrix between the turntable and the pointing machine during the measurement process is established.Using the relationship between the cosines of the D-H matrix direction,the D-H matrix is inversely calculated to obtain the rotation angle of the turntable during measurement,which reduces the adjustment error of the turntable caused by the non-parallel rotation of the turntable and the pointing machine,and improves the measurement accuracy.At the same time,a method for measuring the position angle between the turntable and the pointing machine coordinate system is given,which provides initial data for the inverse solution of the D-H matrix.