A Novel Design of Distributed Servo System Based on Rearranging Functions between Host Controller and Servo Driver

Distributed control system (DCS) and field-bus control system (FCS) become the mainstream in manufacture and processing control applications nowadays. This paper provides a novel DCS scheme for multi-axis motion control with synchronization ability, which is just needed for motion control with interpolation. To make use of DCS advantage and optimize the cost and performance, the scheme adopted a very different structure to arrange function modules of servo system between the host and the distributed driver. Considering that the baud rates of serial bus is high enough with today's technology and that host computer is of powerful data processing ability, the velocity-loop is migrated up to the host. An experiment was carried out to check the feasibility of the design.