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提出了数字阀控制主配压阀式电液系统的构成；分析了分别由二位三通数字阀和二位二通数字阀组成的电液系统的特点．实验表明数字阀控制主配压阀式电液系统具有较好的抗油污能力和理想的控制性能，是一种新型的调速器电液系统．
The composition of the main pressure control valve electro-hydraulic system with digital valve is proposed. The characteristics of electro-hydraulic system composed of two-position three-way digital valve and two-position two-way digital valve are analyzed respectively. Experiments show that the digital valve control valve main electro-hydraulic system with good anti-oil capacity and the ideal control performance, is a new type of governor electro-hydraulic system.