Method for Determining Encoder Resolution in Mechatronic Software Servo Systems Based on Control Requirement.

In mechatronic software servo systems, the position of the servo motors is measured by using encoders which are connected to the servo motors. For the industrial software servo systems, the velocity feedback signal is calculated by the difference operation of the accumulated pulse of the encoder. Ripples of the velocity output of the software servo systems occur because of the deterioration of the velocity feedback signal. In this paper, we analyzed the behavior of the system by using the software servo model, and obtained a relationship between the control performance and the resolution of the encoder in the software servo systems, which can be effectively used in designing the mechatronic software servo systems in industries.