1. Tianjin University, Tianjin 300072，China；2. Tianjin key laboratory of nonlinear dynamics and chaos control ,Tianjin 300072，China;3. Otis elevator (China) corporation limited, Tianjin, 300457，China;4. Dalian University of technology, Liaoning Dalian 116024，China
Abstract：Taking the traction type elevator as the research object, and considering the time-varying characteristics of traction rope stiffness when the elevator is in normal working, the eight degrees of freedom dynamic model of coupled vibration is established for studying the vertical vibration characteristics of the elevator system and the sensitivity of natural frequency dynamic parameters impacting on the elevator system. On the basis of modal analysis to the elevator system, dynamic parameters impacting on the system modal frequency are selected as random variables. Combining design of experiment (DOE) test method and artificial neural network (ANN) technology, the explicit function was obtained between each random parameter and modal response of elevator system. The absolute value of the deviation between natural frequency of the dynamic structure system and excitation frequency should not in excess of allowance, so the failure mode of system resonance was defined, and the reliability sensitivity of the elevator system also was studied. The result reveals that the termination stiffness of the traction rope and the isolation pad of traction machine are prominent factors for system resonance. In practice, the risk of resonance will be able to mitigate effectively by modifying these parameters. Simultaneously, the changes of these dynamics parameters should be strictly monitored against to preventing resonance in working process.
冯文周;;曹树谦;赵峰;胡铖;刘文波. 电梯系统共振失效的灵敏度研究[J]. 振动与冲击, 2015, 34(1): 165-170.
Feng Wenzhou;;Cao Shuqian;Zhao Feng;Hu Cheng;Liu Wenbo. Study on Resonance Failures Sensitivity for Elevator System. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(1): 165-170.
2015, Vol. 34 
