This paper introduces a semi-automatic modeling and controller design method of vibration system based on an element description method. Generally, the controller of a vibration system is designed by approximating the control target to a multi-mass resonant system. In this study, the vibration system is semi-automatically approximated to a two-mass resonant system by the element description method. After that, the controller is semi-automatically derived based on the approximation. The results of modeling and control generation by the element description method have clear physical meanings and can be explicit knowledge. Experiments with beams and weights confirm the validity of this design framework. From the experimental results, it is confirmed that the controller of the resonant ratio control is automatically generated, and the controller capable of interpreting the physical meaning can be automatically generated by the element description method.