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随着旋转机械结构参数的提高,作用在转子上的气流激振力将显著增大。针对转子-机匣密封碰磨系统进行了研究。应用Muszynska非线性密封力模型,建立在气流激振力作用下的转子-机匣碰磨系统耦合动力学方程。根据自适应控制理论,给出一种多重参数自适应控制算法。利用此方法对转子-机匣密封碰磨系统进行了研究,研究结果表明,提出的参数自适应控制律具有较强的稳定控制能力,该方法适合于多重参数非自治复杂混沌系统,在外界干扰下引起混沌状态的情况,可自适应地调整到正常的工作状态,为旋转机械的理论设计和故障动态监测提供了理论依据,具有重要的实际工程应用价值。
As the parameters of the rotating machine structure increase, the air-flow exciting force acting on the rotor will increase significantly. The rotor-casing seal system was studied. The Muszynska nonlinear sealing force model was used to establish the coupled dynamic equation of the rotor-casing touch-grinding system under the action of airflow excitation force. According to adaptive control theory, a multi-parameter adaptive control algorithm is given. The results show that the proposed adaptive control law of parameters has a strong ability of stability control. This method is suitable for complex non-autonomous complex chaotic systems with multiple parameters, and in the external interference Under chaos caused by the situation can be adaptively adjusted to the normal working condition for the theoretical design of rotating machinery and fault dynamic monitoring provides a theoretical basis for the practical application of an important value.