According to amplitude analysis of the measurement signal, the probability DE sign method of finding the spring stiffness of the tractor's hydraulic draftcontrolsystem is stud ied.
以实测信号为依据，通过幅值域分析，探讨了拖拉机液压系统力调节弹簧刚度的概率设计方法。
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Using the PLC module made by Simons as a control core, S7-200 made by Simons is designed in remote gate controlsystem, the draft of its composing and its system software program are put forward.
Through logical estimate, budget, control and communication of expenditure, the thesis strives to draft finance management system suitable to the institution.