The errors in the process of manufacture and installation for high-speed elevator cabin system made the design parameters of the system own randomness. Targeting at realizing analysis of resonance reliability sensitivity for high-speed elevator cabin system, the relational expression between the natural frequency of cabin system and random parameters was derived based on the perturbation technique, which to analyze the influence of parameters randomness to the natural frequency. According to the stability criterion of vibration for mechanical system, the performance function of resonance failure based on diversification of the exciting frequency for hoisting systems was built. Utilizing sensitivity technique, the expressions of resonance reliability sensitivity for cabin system were deduced to analyze the sensitivity. The result shows that the natural frequency of cabin system owns dispersibility when the parameters randomness is considered. The randomness of guide shoe stiffness and guide wheel mounting position has greater effect on the resonance reliability on the same coefficient of variation conditions. The work provides a reference for anti-resonance design and safety assessment of high-speed elevator cabin system.
Key words: high-speed elevator; cabin system; random parameters; resonance; reliability; sensitivity