We use grey systemtheory to analyze the experimental findings and found out the parameter which mostly affects the vibration velocity of tapered roller bearing.
利用灰色系统理论对试验数据进行分析，找出了对轴承振动速度值影响比较大的参数。
2
Because the parameter on sealing performance was difficult to calculate accurately by traditional theory, so the system model of calculating mechanical sealing performance was needed urgently.
由于传统理论计算密封性能参数的精度有限，因此迫切需要一套科学系统的机械密封性能计算模型。
3
The dynamic characteristics of multi-variable system under parameter perturbations are analysed by System Sensitivity Theory in this paper.