Lumped Mass Model for Dynamic Performance Simulation of Pantograph
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摘要: 为了得到合理的受电弓等效模型和参数,将受电弓结构等效为2质量块和3质量块模型,通过实验方 法,对其质量、刚度和阻尼进行识别,得到了不同等效模型的力学参数.基于测得的等效参数建立受电弓数学模 型,进行弓网动力学仿真计算,并将计算得到的接触力结果与利用弓网混合模拟试验台测得的实验数据进行对 比.结果表明:对于2质量块和3质量块模型,最大和最小接触力的最大偏差分别为36.95、20.84N 和23.97、 12.02N,该测试方法可以用于受电弓等效模型参数的辨识.Abstract: The pantograph was simplified as a model with two and three lumped masses to measure the dynamic performance of the pantograph. The parameters of the model, including the masses, stiffness and damping of the pan-head, the upper frame and the lower frame were identified experimentally. The dynamic contact forces between the pantograph and the catenary were calculated based on the parameters and compared with available experimental data, showing that the maximum errors of the maximum and minimum contact forces were 23.97 and 12.02 N for the pantograph model with three lumped masses, and 36.95 and 20.84 N for that with two lumped masses, respectively.
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Key words:
- pantograph /
- lumped mass model /
- parameter identification /
- dynamic performance
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