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本文以WB450型稳定土拌和机为例，分析了新型全轮转向液压系统的构成和特征，给出了后轮转向电液伺服转向系统的数学模型，并进行了稳定性分析。所得结论适用于所有中置式稳定土拌和机。
In this paper, taking the WB450 stabilized soil mixer as an example, the composition and characteristics of the new all-wheel steering hydraulic system are analyzed. The mathematical model of the rear steering electro-hydraulic servo steering system is given and the stability analysis is carried out. The conclusions are valid for all medium-type stabilized soil mixers.