In the proposed 3D printing system, the stepping motor of A-axle has a step angle
The 7.5 deg step angle
provides finer incremental movement with a high degree of accuracy and repeatability.
From (24), interpolation step angle
[DELTA][theta] changes in real time with the change of [[theta].sub.i] to ensure that practical linear velocity of the welding torch is kept constant so as to meet the requirement of the welding process.
In addition, the calibrated model is also employed to perform sensitivity analysis on the geometrical parameters of the joints such as joint orientation angle [beta], joint persistency k, joint spacing d, joint step angle
[gamma], and joint aperture e.
* True closed-loop control system compensates step angle
errors during a movement and correct errors within a full step
Randomly number generating RNG for the step angle
theta and comparing with every before nearest neighbour cuckoos search NNCS.
The "Digit" has a lead screw with a pitch of 0.25 inches/revolution (in/rev), a stroke length of 4 inches, and a stepper motor with a step angle
of 1.8 degrees (200 steps/rev).
The rotation of the transverse scanning plate was driven by a stepper motor with a miniature step angle
Parameter Bipolar (series) Unipolar connection connection Step angle
1.8[degrees] Positioning -0.05[degrees] ...
Other Kit Components 1 stepper motor with 1.8 degree step angle
1 brushless DC motor with Hall sensors 1 portable desktop power supply (24V/1A) with international plugs
The high-resolution 19000 Series captive linear actuator is a 20 mm diameter can-stack that has a 7.5 degree step angle
resulting in small move increments and fine positioning ability.