In a single loop, the same size joint clearances have identical contributions to the angular error; while in the proposed multi-loop design, the position of the multiple-joint also affects the angular error greatly.
A quadratic equation for the prediction of angular error that takes into account electrical parameters and part geometry is derived.
For movement and isometric groups, average angular error peaked at perturbation onset, reduced over 200 reaches, and reversed direction when the perturbation was removed.
During angular error measurements, pitch and yaw errors of the X-, Y- and Z-axes were obtained.
For example, circular differential edge operators are effective in minimising the angular error in the estimation of image gradient direction.
In this paper a new approach to the prediction of angular error in wire-EDM taper-cutting is presented.
Furthermore, both the contact path and the transmission error are more sensitive to the angular error than the offset error.
The performance improved by increasing the driving frequency, which was represented as better speed uniformity and lower angular error.
We illustrate that this design procedure significantly reduces angular error in comparison to other well-known gradient approximation methods.
Angular errors measured by the test pieces are also complied with the laser interferometry results as long as the angular error magnitudes are large enough.
A systematic analysis of the influence of process parameters on angular error is carried out using Design of Experiments (DoE) techniques.
