Design of robust synchronizing controller for unknown servo-motor systems with H/spl infin/ controller

The speed or the position synchronization is required for some industrial equipments, such as rolling machine and gantry crane, driven by the servo-motor driver in order to carry the cooperative job. When we design the synchronizing controller by using the commercial servo-amp, it is necessary to obtain its system parameters which are generally unknown. In this paper, the equivalent model of the commercial servo-amp system is verified by using the frequency characteristics between speed command and output speed. And, also, we designed H/spl infin/ controller from the obtained model of servo-amp and its performance is compared with that of conventional mater-slave method by the computer simulation using Matlab.