quasi periodic motion

Besides the equilibrium and periodic solution, the almost periodic solution, which sometimes appears as quasi-periodic solution, is also a long term regular motion of nonlinear system.

非线性系统的长期规则运动除了平衡点和周期解以外，概周期解，或有时表现为拟周期解也是一种长期规则运动。

The results obtained show that several motions may occur in the region of combination resonance, including two kinds of quasi-periodic vibrations and combined periodic motion.

研究结果发现，组合共振区域内发生两种不同的拟周期运动和组合周期运动，而且第一振型次谐波共振曲线延伸到组合共振区域。

The rotating number is generally an irrational number and only in some special conditions is a rational one, from which it can be known that the motion of the system is quasi-periodic or periodic.

在此基础上分析系统的转动数，发现转动数一般为无理数，只在某些特定条件下存在有理旋转数，从而系统作准周期运动或者周期运动。