Structural Dynamics and System Identification of Parallel Kinematic Machines

One of the primary concerns associated with the machining process involves excess vibrations that can adversely affect the ability of the machine tool to accurately produce parts. This paper presents the development of a method by which the vibrational characteristics of machine tools exhibiting a parallel kinematic machine architecture may be modeled. Theoretical and experimental results are compared to demonstrate the validity of the modeling approach. The resulting model provides an effective means to guide the machine design process for the purposes of enhancing performance and improving control.