关键词: 动力学建模, 双轴不同步误差, 双轴同步系统

Abstract: According to the configuration movement feature of dual-drive system, the behavior of the dual-driving system is divided into two parts. The dynamic model of each one part is developed. Based on the dual-driving system model, the analytic formula of the non-synchronous error is derived. The quantitative relation between the structural parameters, the acceleration, velocity, and position input of the dual-driving system and the non-synchronous error is obtained. The influence law of stiffness ratio, friction damping ratio, the shift of mechanical coupling parts orthocenter on the non-synchronous error is developed. The experiments are taken on the DK-1200 machine tool with several different input signals, and the experiment results agree with the theoretical calculations. The accuracy of the calculation formula of the non-synchronous error is proved.

Key words: Dual-drive system, Dynamic model, Non-synchronous error