风力机塔架螺栓连接状态监测与辨识研究进展

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The bolt-jointed structure is the only way of connection in wind turbine tower between two short conical towers, as well as foundation. If the bolt-jointed structure is failure, wind turbine will take the catastrophic damage. In order to prevent the loose-ness of bolts, or even fracture, the wind turbine tower bolt-jointed condition monitoring and identification is crucial. Bolt-jointed structure dynamic analysis methods and bolt-jointed condition monitoring and identification methods were summarized, and these methods of based on dynamic model and based on signal analysis that can be used with the wind turbine tower bolt-jointed condi-tion monitoring and identification were reviewed. Lastly, dynamic development for the wind turbine tower bolt-jointed condition monitoring and identification was pointed out.螺栓连接是大型风力机塔架各段塔筒及塔架与塔基之间的唯一连接方式，若其连接状态失效，将会造成灾难性的破坏。为了预防螺栓松动，甚至断裂，对风力机塔架螺栓连接状态进行监测与辨识至关重要。综述了螺栓连接结构动特性分析方法和螺栓连接状态监测与辨识方法，并对基于动力学模型和基于信号分析的无模型状态监测与辨识方法能否应用于风力机塔架螺栓连接状态的监测与辨识进行了述评，重点论述了波传播非线性动力学模型和应用非线性动力学理论进行信号分析的无模型状态监测与辨识方法，综述了风力机塔架螺栓连接状态监测与辨识的发展动态。