On the Influence of the Velocity Gain Factor on the Path Deviation

Abstract The velocity gain factor k v of a position controller decisively determines the lag as well as the dynamic accuracy of a machine tool. The lag is well defined by the k v factor. There is however, a lack of literature with a sound interpretation of the relationship between the k v factor and path deviation. Thus this paper concerns itself with the influence of the k v factor on the path accuracy, on the disturbance behaviour of position axes and on the behaviour of a cross-coupled controller. For comparison, the effects of prefilter technology are also taken into consideration.