Modeling for Flexible Mechanical Systems

An alternative modelling technique is proposed in place of the well known modal reduction method for mechanical system modelling. The method, called quasi-modal reduction, belongs to the category of mode synthesis methods and represents a special way of substructuring. Its main advantage is the adaptability of the reduced mechanical model to varying boundary conditions, as they are often encountered in control design for mechatronics systems. A mass-spring model of the reduced mechanical system can be derived for flexible mechanical systems. As an application example, a possible control layout method, a Luenberger observer modified for mechanical vibrational systems, is indicated.