Research on Modeling and Simulation for Double-Face Dynamic Balance of Rigid Rotor System

Background: With the development of high-speed and high-precision rotating machinery, the patents of dynamic balance mechanism have been increasingly applied on rigid rotor system. Objective: To analyze the unbalance vibration characteristics and design the suitable dynamic balance method for rigid rotor system, the method of modeling and simulation is utilized in the paper. Method: Based on the principle of rotor dynamics, the mathematic model is built firstly between the vibration response and unbalance excitation. According to double-face dynamic balance principle, the correction of correcting face is made equivalent to the unbalance excitation of the rotor system, and then the mathematic model is developed with double-face correcting function. The matlab language is applied to design the simulation program for the dynamic balance model. Results: Based on simulation analysis, the relations are analyzed between unbalance vibration response and rotating frequency, influence coefficient and rotating frequency, influence coefficient and axial positions of correcting face in the paper. The analysis results prove that the modeling method for double-face dynamic balance of rigid rotor system is reasonable. Conclusion: The mathematic model provides a theoretic foundation for further patent technology on the rotor dynamic balance.