The resolution of an industrial robot generally refers to the minimum positioning capability of the robot's end effector in three spatial directions, usually expressed in millimeters or micrometers. It reflects the accuracy requirements of the industrial robot's control system for the robot's position and movement, and is one of the important indicators for evaluating the performance of an industrial robot.
Depending on the different subdivision methods, the resolution of industrial robots can be divided into the following categories:
Repeatability accuracy, also known as regression accuracy, refers to the positional accuracy that a robot can achieve when performing the same task multiple times. It is generally described using a normal distribution curve, represented by the mean and standard deviation.
Zero-point drift: refers to the displacement of the end effector position after a robot has been working for a long time due to various reasons. This displacement affects the quality and stability of work and requires periodic correction.
Motion resolution: refers to the minimum unit length that the end effector moves in each axis during continuous robot motion. This value is related to factors such as encoder resolution and reducer transmission ratio.
Visual resolution: refers to the resolution of a robot's vision system, that is, the smallest feature size that the robot can distinguish when visually perceiving a target. It is usually represented by pixels, but can also be expressed in terms of actual length.
