181
Cartesian coordinates
[x(mm), y(mm), z(mm), roll(rad or °), pitch(rad or °), yaw(rad or °)];
Cartesian coordinates
[x(mm), y(mm), z(mm), roll(rad or °), pitch(rad or °), yaw(rad or °)];
If is_radian = True, the unit of roll / pitch / yaw is rad;
If is_radian = False, the unit of roll / pitch / yaw is °;
TCP motion speed (mm / s, rad / s);
TCP motion acceleration (mm / s
2
, rad / s
2
);
If wait = True, wait for the current commands to be sent before
sending the next commands;
If wait = False, send the next commands directly;
2.3. Singularity
1.Concept
Singularities occur when the axes of any two joints of a robotic arm
are on the same straight line. At the singularity point, the robot's
degrees of freedom will be degraded, which will cause the angular
velocity of some joints to be too fast, leading to loss of control. A
common situation is that when the wrist joint (the penultimate one)
is at or near the axis of the first joint, singularity point will also
appear (see Figure 2.1), so the robotic arm should try to avoid
passing directly the central area near the base, which is likely to