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根据所确定全液压推土机的电子控制及传动方案，建立了液压驱动系统的数学模rrrrrrrrn型，并进行了动态仿真分析，得出在外负载变化的情况下，变量泵和变量马达的排量rrrrrrrrn等参量的变化情况。
Based on the electronic control and transmission scheme of full hydraulic bulldozer, the mathematical model of hydraulic drive system was established and the dynamic simulation analysis was carried out. In the case of changes in the external load, the variable displacement pump and the variable displacement motor parameters such as r r r r r r r r n.