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以奔野－２５拖拉机液压悬挂系统为研究对象，通过对初步构成的耕深自动监控系统进行动态特性试验，用频率法建立了该控制系统的数学模型，找出系统动态性能不佳的原因，并提出改进设想，为农机电气自动控制系统的辨识提供一种有效方法。
The Ben-Ye -25 tractor hydraulic suspension system as the research object, through the dynamic characteristics of the initial composition of the tillage automatic monitoring system to establish the mathematical model of the control system using frequency method to find out the reasons for the poor dynamic performance of the system, And put forward the idea of improving, providing an effective method for the identification of automatic control system of agricultural electrical machinery.